Spain Heatwave 2026
Spain is burning. The country’s first official heatwave of 2026 — declared by the Agencia Estatal de Meteorología (AEMET) beginning on 21 June 2026 — has produced temperature and mortality records still being counted as of today, 26 June 2026. The MoMo (Mortality Monitoring System) of Spain’s Carlos III Health Institute recorded 212 excess deaths linked to heat between Sunday 21 June and Wednesday 24 June 2026 — a four-day toll already exceeding the 98 excess deaths in the same four days in 2025, and 2025 was Spain’s hottest summer on record. The June 2026 heatwave follows a late-May heat event that killed 101 people — the highest May heat death toll since MoMo began in 2015. By any measure, 2026 is tracking as the deadliest heat year in Spain’s modern monitoring history. 22 June peaked at 45.1°C in Andújar (Jaén) — the first 45°C reading of 2026 — while Tama in Cantabria recorded 43.7°C on June 23, the highest temperature ever recorded in the region in any month of the year. Northern Spain, which historically escaped the worst of Iberian heat, is increasingly on the front line.
The June 2026 event cannot be separated from Spain’s recent heat history. Heat-related deaths between May 16 and September 30, 2025 hit 3,832 — an 87.6% increase from 2024 — while summer 2022 produced 4,600+ deaths (INE) and remains the previous benchmark. 2026 is arriving earlier, striking more broadly, and killing faster in its opening days than any predecessor. AEMET confirmed June 22 and 23 were the two hottest June days in mainland Spain since at least 1950 — daily averages of 28.08°C and 28.17°C — beating the 28.01°C record set on 30 June 2025 — and the two hottest June nights ever recorded, with average minima of 20.14°C and 19.81°C.
Interesting Facts: Spain Heatwave Statistics 2026
| Fact | Figure |
|---|---|
| Heatwave official start date (AEMET) | 21 June 2026 |
| MoMo heat-linked deaths (21–24 June 2026) | 212 |
| Daily death progression | 13 (June 21) → 38 (22) → 66 (23) → 95 (24) |
| MoMo heat-linked deaths (same 4 days, 2025) | 98 — 2026 rate more than double |
| May 2026 heat deaths (Spain) | 101 — highest May total since MoMo began 2015 |
| Peak temperature June 2026 (Andújar, Jaén) | 45.1°C — June 22 |
| Peak temperature (Montoro, Córdoba) | 45.1°C — June 23 |
| All-time Cantabria record (Tama, Liébana) | 43.7°C — highest in any month |
| Almería coast minimum temperature | 30°C+ for 3 consecutive June mornings — first in mainland Spain history |
| Tresviso (Cantabria) — all-time hottest minimum | 26.8°C (80.2°F) |
| June daily average temperature record (June 22) | 28.08°C — highest since 1950 |
| June daily average temperature record (June 23) | 28.17°C — beating June 22 |
| Previous June daily average temperature record | 28.01°C — 30 June 2025 |
| June average minimum temperature record (June 22) | 20.14°C — highest for June since 1950 |
| Provinces recording 40°C+ (Tuesday 23 June) | 28 provinces |
| AEMET stations recording 40°C+ (Tuesday alone) | 129 of 828 AEMET stations |
| New June daytime maximum records set | 13 |
| New June nighttime minimum records set | 16 |
| Total AEMET stations breaking monthly records this heatwave | 700+ |
| Health alerts activated (isoclimatic zones) | 86 zones, 5,266 municipalities, 21.9 million people (~46% of Spain) |
| Autonomous communities under orange alert (June 21) | 13 of 17 |
| Heat deaths May–September 2025 (MoMo) | 3,832 (+87.6% vs 2024) |
| Heat deaths summer 2022 (INE) | 4,600+ |
| Spain’s heatwaves since 1975 (total) | 78 heatwaves / 458 days |
| Heatwave days before 2000 vs after 2000 | 129 days (pre-2000) vs 329 days (2001–2025) |
| Average heatwave days per year — 1970s/80s | 3 per year |
| Average heatwave days per year — last decade | 22 per year |
Source: AEMET press releases and data (aemet.es, June 22–25, 2026); MoMo (Sistema de Monitorización de la Mortalidad Diaria), Carlos III Health Institute, June 25, 2026; Euronews, “Spain’s heatwave has smashed multiple June temperature records,” June 24, 2026; Al Jazeera, “Europe faces another day of extreme heat,” June 25, 2026; The Watchers, “Spain estimates 212 heat-related deaths in 4 days,” June 25, 2026; russpain.com, “Spain Endures Hottest June Days Since 1950,” June 25, 2026; Wikipedia — 2026 European heatwaves (updated June 25, 2026)
The 212 MoMo-linked deaths in four days tells a story of extraordinary velocity: 13 deaths on Sunday, 38 Monday, 66 Tuesday, 95 Wednesday — near-doubling each day as cumulative heat exposure, tropical night sleep deprivation, and sustained heat stress compounded. The same four-day window in 2025 produced 98 deaths — the 2026 rate is more than double. The 86 isoclimatic zone health alerts covering 21.9 million people (~46% of Spain) represent the largest simultaneous heat alert activation in Spanish history.
The 700+ AEMET stations breaking monthly records confirm this is not localised but a near-total reconfiguration of what a Spanish June looks like. The previous June daily average temperature record — 28.01°C set on 30 June 2025 — was beaten on June 22 and then beaten again the next day. June has historically been Spain’s transition month; the 2026 heatwave has compressed July and August conditions into the third week of June.
Spain June 2026 Heatwave Temperature Records
Peak Temperatures — Spain June 2026 Heatwave (AEMET)
======================================================
Andújar, Jaén (22 Jun) |████████████████████████████████████████████████| 45.1°C
Montoro, Córdoba (23 Jun) |████████████████████████████████████████████████| 45.1°C
Tama, Cantabria (23 Jun) |███████████████████████████████████████████████ | 43.7°C (regional all-time record)
Bilbao Airport |████████████████████████████████████████████ | 40°C+ (2nd time in 2026)
Madrid daily avg (23 Jun) |████████████████████████████████████████████████| 28.17°C (record June)
Almería coast (minimum) |████████████████████████████████████████████████| 30°C+ (3 consecutive June mornings)
Tresviso, Cantabria (min.) |████████████████████████████████████████████ | 26.8°C all-time hottest low
------------------------------------------------------------
28 provinces hit 40°C+ on Tuesday 23 June | 129 of 828 AEMET stations exceeded 40°C on Tuesday
Source: AEMET; Euronews; russpain.com; The Watchers; Al Jazeera — June 22–25, 2026
| Location / Record | Temperature | Record Type |
|---|---|---|
| Andújar, Jaén (22 June) | 45.1°C | First 45°C reading of 2026 |
| Montoro, Córdoba (23 June) | 45.1°C | Equalled Andújar peak |
| Tama, Liébana, Cantabria (23 June) | 43.7°C | All-time Cantabria record — any month |
| Almería coast (minimum, 3 mornings) | 30°C+ | First June occurrence in mainland Spain history |
| Tresviso, Cantabria (daily low) | 26.8°C | All-time hottest low for location |
| Bilbao Airport (40°C+) | 40°C+ | Second 40°C day in 2026; 13 total since 2000 vs 7 total 1947–1999 |
| Mainland Spain daily average (22 June) | 28.08°C | Hottest June daily avg since 1950 |
| Mainland Spain daily average (23 June) | 28.17°C | Beat June 22 record |
| Mainland Spain June average minimum (22 June) | 20.14°C | Hottest June overnight average since 1950 |
| Mainland Spain June average minimum (23 June) | 19.81°C | Second hottest on record |
| Previous June daily average record | 28.01°C | Set 30 June 2025 |
| Three June 2026 days in top 10 hottest June days ever | Confirmed by AEMET | — |
Source: AEMET, June 22–25, 2026; Euronews, June 24, 2026; russpain.com, June 25, 2026; The Watchers, June 25, 2026; Wikipedia — 2026 European heatwaves
The concentration of records in northern Spain is the defining meteorological feature of the June 2026 event and the one that most clearly signals a changed climate rather than a recurrence of familiar patterns. Cantabria — green, Atlantic-facing, relatively humid — is not a region with a history of extreme heat. Tama in Liébana recording 43.7°C in any month of the year is a reading that would have been considered impossible just twenty years ago. Bilbao Airport crossing 40°C twice in 2026 alone, against just seven total crossings in the entire 52-year period between 1947 and 1999, captures the scale of change with striking clarity: what took more than half a century to accumulate historically is now being matched in a single year.
AEMET confirmed three June 2026 days among the ten hottest June days in the Spanish historical record, with temperatures more than seven degrees above normal for this time of year. The Almería coast failing to drop below 30°C for three consecutive June mornings had never been recorded before in mainland Spanish meteorological data — a milestone in nocturnal heat extremes that captured the intensity of the tropical nights accompanying this event.
Spain May 2026 Heatwave and Early Season Deaths
Spain Heat Deaths by Event — 2026 (MoMo / Ministry of Health)
=============================================================
May 2026 event |████████████████████████████████████████████████| 101 deaths — record for May since 2015
June 21–24, 2026 |████████████████████████████████████████████████████| 212 deaths in 4 days
Projected June total | | Accumulating — final count not yet known
Same 4 days in 2025 |████████████████████████ | 98 deaths
May–Sep 2025 total |████████████████████████████████████████████████| 3,832 deaths (+87.6% vs 2024)
Summer 2022 total (INE) |████████████████████████████████████████████████████| 4,600+
------------------------------------------------------------
Source: MoMo (Carlos III Health Institute); Ministry of Health Spain; INE; Al Jazeera; The Local ES
| Heat Mortality Metric | Data |
|---|---|
| May 2026 heat deaths (MoMo) | 101 — record for May since 2015 |
| June 21–24, 2026 heat deaths (MoMo) | 212 |
| Daily breakdown June 21–24 | 13 / 38 / 66 / 95 |
| Same 4-day window 2025 (MoMo) | 98 excess deaths |
| 2026 rate vs 2025 same period | More than double |
| May–Sep 2025 heat deaths (MoMo) | 3,832 |
| May–Sep 2024 heat deaths (comparison) | ~2,038 (87.6% lower than 2025) |
| Summer 2022 heat deaths (INE) | 4,600+ |
| Total 2026 heat season deaths (to date) | 313+ (May 101 + June 21–24 212) |
| Health alert zones activated | 86 isoclimatic zones |
| Municipalities under health alert | 5,266 |
| Population under health alert | ~21.9 million (~46% of Spain) |
| MoMo system scope | Compares daily deaths to historical baseline + AEMET weather data |
Source: MoMo Sistema de Monitorización de la Mortalidad Diaria, Carlos III Health Institute; Spain Ministry of Health; Al Jazeera, June 25, 2026; The Watchers, June 25, 2026; The Daily Star / Reuters, June 25, 2026; russpain.com, June 20, 2026
The 101 heat deaths recorded during the late May 2026 heatwave — the highest May toll since MoMo monitoring began in 2015 — set the tone for a year that is now accelerating. The progression from 13 deaths on Sunday June 21 to 95 on Wednesday June 24 describes a mortality curve that tracks precisely with the day-by-day escalation of temperatures and the accumulation of heat stress in the human body. Heat does not kill immediately and symmetrically — it kills through dehydration, heat exhaustion, hyperthermia, and the exacerbation of underlying cardiovascular and respiratory conditions, processes that intensify over days of exposure. The Wednesday figure of 95 deaths in a single day — larger than the combined Monday and Tuesday totals — reflects the physiology of prolonged heat exposure rather than a single peak day of extreme temperature.
The 3,832 heat deaths in May–September 2025 (+87.6% from 2024) built on a trajectory running since 2022’s 4,600+ deaths. The 2026 season, with 313+ verified deaths before June is finished, is tracking toward a total that could surpass any prior year. The Ministry of Health issued pre-emptive warnings to all 17 autonomous communities urging outreach to elderly and isolated residents — the group MoMo consistently identifies as bearing the overwhelming majority of heat mortality.
Spain’s Heatwave History and Long-Term Trends in 2026
Spain Heatwave Days Per Decade / Period (AEMET, 50-year analysis)
==================================================================
1975–1984 |████ | ~3 heatwave days/year avg
1985–1994 |████ | ~3–4 heatwave days/year
1995–2004 |████████ | ~5–6 heatwave days/year
2005–2014 |████████████████ | ~10–12 heatwave days/year
2015–2025 |████████████████████████████████████████████| ~22 heatwave days/year
------------------------------------------------------------
78 heatwaves / 458 days since 1975 | Pre-2000: 129 days | 2001–2025: 329 days
June heatwaves before 2000: 2 | June heatwaves 2000–2025: 10
Average heatwave season start: advancing ~4 days per decade
Source: AEMET 50-year heatwave analysis (russpain.com June 2026)
| Long-Term Trend Metric | Data |
|---|---|
| Total Spanish heatwaves since 1975 | 78 heatwaves |
| Total heatwave days since 1975 | 458 |
| Heatwave days before 2000 | 129 |
| Heatwave days 2001–2025 | 329 |
| Average heatwave days/year — late 1970s/80s | ~3 |
| Average heatwave days/year — last decade | 22 |
| Annual heatwave day increase per decade | ~3.3 days |
| Annual expansion of affected area per decade | +3.2 provinces |
| June heatwaves before 2000 | 2 |
| June heatwaves 2000–2025 | 10 |
| 40% of all heatwaves since 1975 occurred | Since 2015 |
| Heatwave season start advancing | ~4 days per decade earlier |
| Average heatwave duration — last decade | 7.2 days (vs 5 days in prior 4 decades) |
| Summer 2025 | Tied with 2022 as hottest on record in Spain |
| Summer 2025 final heatwave (August) | 16-day duration; 300,000+ ha wildfires |
| Nature study (Sep 2025): all 213 heatwaves analysed (2000–2023) | All intensified by climate change; 25% nearly impossible without it |
Source: AEMET 50-year heatwave analysis cited by russpain.com, June 25, 2026; russpain.com, June 20, 2026; Al Jazeera June 24–25, 2026; Nature study September 2025 cited in russpain.com; Wikipedia — 2026 European heatwaves
AEMET’s fifty-year analysis provides one of the most precise records of how extreme heat has changed in a single country. Spain averaged roughly three heatwave days per year in the late 1970s and early 1980s; the last decade averages 22 days per year — a sevenfold increase. The geographic footprint expands by approximately 3.2 provinces per decade, meaning regions that previously escaped severe heat are progressively exposed. Cantabria’s all-time record this week is a direct manifestation of that expansion.
Before 2000, only two June heatwaves were recorded in mainland Spain; between 2000 and 2025, ten occurred — a fivefold increase. The season is advancing by approximately four days per decade, and average heatwave duration has grown from five days to 7.2 days in the last decade. A Nature study published in September 2025 analysed 213 global heatwaves from 2000 to 2023 and found all were intensified by climate change, with a quarter nearly impossible without current warming levels. Eight Spanish heatwaves — including 2022 and 2023 — were individually confirmed as events that would not have occurred in a pre-industrial climate.
Spain Heatwave Health Infrastructure and Emergency Response in 2026
Spain Health Emergency Response — June 2026 Heatwave
=====================================================
Health alerts activated |████████████████████████████████████| 86 isoclimatic zones
Municipalities under alert |████████████████████████████████████| 5,266
Population covered |████████████████████████████████████| ~21.9 million (46% of Spain)
Autonomous communities (orange+) |████████████████████████████████████| 13 of 17 (June 21)
Autonomous communities (red) |████████████████████████████████████████| Basque Country + northern regions
Red alerts (4 consecutive days) |████████████████████████████████████████| Guipúzcoa and Vizcaya (Basque)
Wildfire risk |████████████████████████████████████████| Experts watching end-June 2026 closely
Air conditioning in EU homes |████████████ | ~20% of homes only
------------------------------------------------------------
Source: Spain Ministry of Health; AEMET; Al Jazeera June 24–25, 2026; russpain.com June 2026
| Emergency Response Metric | Data |
|---|---|
| AEMET first heatwave declaration 2026 | 21 June 2026 |
| Ministry of Health alert zones | 86 isoclimatic zones; 5,266 municipalities |
| Population under health alert | ~21.9 million (~46% of Spain) |
| Autonomous communities under orange+ (June 21) | 13 of 17 |
| Basque Country alert level (June 21) | Red — highest level |
| Guipúzcoa and Vizcaya red alert duration | 4 consecutive days |
| SUMMA 112 heatstroke response (Madrid) | Medical service transferred at least 1 heatstroke patient from Valdemoro prison to hospital |
| Wildfire preparedness | Experts closely watching late June–July 2026 after August 2025 (300,000+ ha) |
| Air conditioning penetration (EU homes) | ~20% |
| Northern Spain vulnerability | Housing designed to retain heat; no AC — infrastructure mismatch |
| High-risk population segments | Elderly (65+), outdoor workers, people with cardiovascular or respiratory conditions, isolated individuals |
Source: Al Jazeera, June 24, 2026; Spain Ministry of Health June 2026 alerts; AEMET; russpain.com June 20, 2026; Wikipedia — 2026 European heatwaves (updated June 25, 2026)
Spain’s emergency response machinery was fully activated before the June 2026 heatwave peaked, with the Ministry of Health issuing pre-emptive alerts to all 17 autonomous communities. The Basque Country’s red alert — the highest warning tier in Spain’s system — was particularly significant given that the Basque region is historically among the least heat-exposed parts of the Iberian peninsula, with a maritime climate that moderates summer temperatures. Issuing the highest alert in that region reflects how genuinely unusual it is for temperatures to exceed 40°C in Guipúzcoa and Vizcaya, and how poorly prepared the infrastructure in northern communities is for sustained extreme heat. Al Jazeera noted that scientists warned Europe is particularly vulnerable because much of its housing and infrastructure was not designed for prolonged periods of extreme heat, with only around 20% of European homes having air conditioning. In many northern countries and regions, buildings were historically designed to retain heat in winter — making them acutely dangerous during a summer heatwave.
The wildfire risk is an additional threat that emergency managers are monitoring. Spain’s August 2025 wildfire season burned more than 300,000 hectares — the worst since the 1990s — following the same pattern of early heatwaves drying vegetation before the fire season peaks. The same sequence is unfolding in 2026. Experts stated they were “closely watching the end of June 2026” for wildfire severity, noting conditions heading into late June 2026 are more dangerous than at the same point in 2025.
Spain Climate Change and Future Heatwave Risk in 2026
Spain Heatwave Risk — Climate Context (AEMET / Nature / EU Copernicus)
=======================================================================
Annual heatwave days 1970s/80s |████ | ~3 days/year
Annual heatwave days last decade |████████████████████████████████ | 22 days/year
June heatwaves before 2000 |████ | 2 total
June heatwaves 2000–2025 |████████████████████████████████ | 10 total
40% of all heatwaves since 1975 |████████████████████████████████ | Occurred since 2015
Europe warming rate vs global avg |█████████████████████████████ | 2x global average
Spain's all-time temperature record|███████████████████████████████████████████████| 47.4°C (Montoro, August 2021)
------------------------------------------------------------
All 213 analysed heatwaves (2000–2023): intensified by climate change (Nature, Sep 2025)
Source: AEMET; Nature Sep 2025; EU Copernicus; russpain.com June 2026
| Climate Context Metric | Data |
|---|---|
| Spain’s all-time temperature record | 47.4°C — Montoro, Córdoba, August 14, 2021 |
| Spain’s hottest summer(s) on record | 2025 (tied with 2022) |
| Europe warming rate | ~2x the global average |
| EU Copernicus: global temperature record | 2024 was hottest year on record |
| 2026 heat deaths (June 21–24 alone) | 212 — exceeds full 4-day totals from any prior heatwave |
| Nature study (Sep 2025): 213 heatwaves 2000–2023 | All intensified by climate change; 25% nearly impossible without it |
| Spain heatwaves attributed to climate change | 8 major events confirmed — would not have occurred without warming |
| Heatwave season start trend | ~4 days earlier per decade |
| Average heatwave duration trend | 7.2 days (last decade) vs 5 days (previous 4 decades) |
| UN Secretary-General on Europe’s heat | “Boiling” continent — repeated calls for urgent action |
| Climate experts’ outlook for Spain | 2026 likely to be among Spain’s hottest years on record |
Source: russpain.com, June 20, 2026; Al Jazeera June 24, 2026; Nature study September 2025; EU Copernicus; Wikipedia — 2026 European heatwaves; AEMET 50-year analysis
Spain’s all-time temperature record of 47.4°C — set in Montoro, Córdoba on 14 August 2021 — provides the outer boundary of what has been observed on the Iberian Peninsula. Notably, the same municipality, Montoro, matched the June heatwave’s peak of 45.1°C on June 23, 2026, less than five years later — and that was a June reading, not an August one. The closing gap between June maximums and the August all-time record is one of the starkest indicators of how the heat extremes are shifting seasonally.
Europe warms at approximately twice the global average rate, and Spain sits at the western Mediterranean edge — one of climate science’s most consistent heat-extremes hotspots. Spain’s trajectory — 3 heatwave days per year in the 1970s to 22 in the last decade, 2 June heatwaves before 2000 to 10 between 2000 and 2025, and from 4,600 summer deaths in 2022 to 3,832 in May–September 2025 to an already accelerating 2026 — is not statistical noise. It is the systematic expression of a changed climate arriving faster than adaptation infrastructure is being built.
Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.