August 2025 heatwave: heat across much of Spain, 3–18 August 2025

3 August 2025 to 18 August 2025. Updated 26 October 2026.

AEMET records a heatwave from 3 August to 18 August 2025.

Over 16 days, 141 of Spain's 182 warning zones had an orange or red warning for heat: 731 zone-days at orange or red, 58 of them red. The day with the most zones at orange or red was 17 August, with 104 zones.

17 August was the day with the most people in zones under an orange or red warning: 32.4 million people live there (INE municipal register, 2025).

RedOrangeYellowNo warningEach zone at the highest warning it had during the episode. Grey: no warning on those days.

True-colour satellite image of the Iberian Peninsula and the Balearic Islands on 17 August 2025 — Spain from space on 17 August 2025, the day with the most zones at orange or red. Image: NASA Worldview.

How it compares

It has the most zone-days at orange or red of any episode since June 2018.
It is the largest of the 37 heat episodes since June 2018.

Day by day

Day	Red	Orange	Yellow	Orange or red warnings for
Sun 3 August	—	17	33	heat
Mon 4 August	—	24	62	heat
Tue 5 August	—	33	52	heat
Wed 6 August	—	22	77	heat
Thu 7 August	—	30	83	heat
Fri 8 August	—	31	72	heat
Sat 9 August	2	37	65	heat
Sun 10 August	6	60	60	heat
Mon 11 August	4	67	67	heat
Tue 12 August	9	55	68	heat
Wed 13 August	—	21	96	heat, storms
Thu 14 August	1	25	71	heat
Fri 15 August	7	53	80	heat
Sat 16 August	5	84	49	heat
Sun 17 August	22	82	39	heat
Mon 18 August	2	32	61	heat, rain, storms

Zones with a warning each day, at their highest level that day.

The zones

Zone	Province	Highest level	Warning days
Campiña cordobesa	Córdoba	red	16
Morena y Condado	Jaén	red	16
Valle del Guadalquivir de Jaén	Jaén	red	16
Vegas del Guadiana	Badajoz	red	15
Villuercas y Montánchez	Cáceres	red	16
Campiña sevillana	Sevilla	red	16
Depresión central de Lleida	Lleida	red	15
Ribera del Ebro de Zaragoza	Zaragoza	red	15
Este, sur y oeste de Gran Canaria	Gran Canaria	red	14
Campiña gaditana	Cádiz	red	13
Cumbres de Gran Canaria	Gran Canaria	red	13
Ribera del Ebro de Navarra	Navarra	red	13
Ampurdán	Girona	red	9
Ribera del Ebro de La Rioja	La Rioja	red	14
Centro de Navarra	Navarra	red	13
Depresión central de Tarragona	Tarragona	red	11
Litoral de Huelva	Huelva	red	10
Litoral sur de Valencia	València/Valencia	red	9
Sierra sur de Sevilla	Sevilla	red	12
Este, sur y oeste de Tenerife	Tenerife	red	10
Prelitoral sur de Tarragona	Tarragona	red	10
Vega del Segura	Murcia	red	10
Litoral norte de Valencia	València/Valencia	red	8
Liébana	Cantabria	red	9
Bizkaia interior	Bizkaia	red	8
Gipuzkoa interior	Gipuzkoa	red	8
Litoral sur de Alicante	Alacant/Alicante	red	8
Área metropolitana de Tenerife	Tenerife	red	7
Fuerteventura	Fuerteventura	red	5
Litoral sur de Tarragona	Tarragona	red	5
Lanzarote	Lanzarote	red	4
Litoral gaditano	Cádiz	red	8
Centro y valle de Villaverde	Cantabria	red	3
Bizkaia litoral	Bizkaia	red	2
Litoral cántabro	Cantabria	red	2
Central y Valles Mineros	Asturias	red	1
La Siberia extremeña	Badajoz	orange	15
Tajo y Alagón	Cáceres	orange	15
Valle del Tajo	Toledo	orange	16
Cazorla y Segura	Jaén	orange	16
Norte de Cáceres	Cáceres	orange	16
Metropolitana y Henares	Madrid	orange	16
Sur, Vegas y Oeste	Madrid	orange	16
Valle del Guadiana	Ciudad Real	orange	16
Barros y Serena	Badajoz	orange	15
Sierra de San Vicente	Toledo	orange	16
Sierras de Alcudia y Madrona	Ciudad Real	orange	16
Meseta cacereña	Cáceres	orange	15
Sur de Huesca	Huesca	orange	15
Cuenca del Genil	Granada	orange	16
Sur de Ávila	Ávila	orange	15
Subbética cordobesa	Córdoba	orange	16
Miño de Ourense	Ourense	orange	15
Sierra de Madrid	Madrid	orange	15
Meseta de Zamora	Zamora	orange	15
Meseta de Valladolid	Valladolid	orange	14
Pirineo oscense	Huesca	orange	14
Andévalo y Condado	Huelva	orange	11
Miño de Pontevedra	Pontevedra	orange	11
Ibérica zaragozana	Zaragoza	orange	15
Pirineo de Lleida	Lleida	orange	14
Sierra y Pedroches	Córdoba	orange	16
Serranía de Cuenca	Cuenca	orange	15
Cinco Villas de Zaragoza	Zaragoza	orange	14
Cantabria del Ebro	Cantabria	orange	12
Pirineo navarro	Navarra	orange	12
Aracena	Huelva	orange	11
La Mancha albaceteña	Albacete	orange	16
Meseta de Salamanca	Salamanca	orange	15
Centro de Huesca	Huesca	orange	14
Sur de Badajoz	Badajoz	orange	13
Norte de Burgos	Burgos	orange	12
Condado de Treviño	Burgos	orange	10
Llanada alavesa	Araba/Álava	orange	10
La Mancha toledana	Toledo	orange	16
Montes de Toledo	Toledo	orange	16
Alcarria de Guadalajara	Guadalajara	orange	15
Montes del norte y Anchuras	Ciudad Real	orange	15
Sur de Salamanca	Salamanca	orange	15
Sur de Ourense	Ourense	orange	14
Alcaraz y Segura	Albacete	orange	13
Cordillera Cantábrica de Burgos	Burgos	orange	13
Sierra norte de Sevilla	Sevilla	orange	13
Sur de Lugo	Lugo	orange	12
Rioja alavesa	Araba/Álava	orange	11
Interior sur de Valencia	València/Valencia	orange	9
La Mancha de Ciudad Real	Ciudad Real	orange	16
Alcarria conquense	Cuenca	orange	15
Bajo Aragón de Teruel	Teruel	orange	14
Sistema Central de Segovia	Segovia	orange	14
Guadix y Baza	Granada	orange	13
Hellín y Almansa	Albacete	orange	13
Valdeorras	Ourense	orange	13
Interior de Mallorca	Mallorca	orange	11
Cumbres de La Palma	La Palma	orange	10
La Gomera	La Gomera	orange	10
El Hierro	El Hierro	orange	9
Interior norte de Valencia	València/Valencia	orange	9
Prelitoral de Girona	Girona	orange	9
Cuenca del Nervión	Araba/Álava	orange	8
Ibiza y Formentera	Ibiza y Formentera	orange	8
Altiplano de Murcia	Murcia	orange	6
Norte de Gran Canaria	Gran Canaria	orange	6
Oeste de La Palma	La Palma	orange	6
Valle del Guadalentín, Lorca y Águilas	Murcia	orange	6
Este de La Palma	La Palma	orange	5
Litoral norte de Alicante	Alacant/Alicante	orange	5
Norte de Tenerife	Tenerife	orange	5
Interior de Alicante	Alacant/Alicante	orange	4
Capital y Montes de Jaén	Jaén	orange	16
La Mancha conquense	Cuenca	orange	16
Meseta de Palencia	Palencia	orange	14
Noroeste de Ourense	Ourense	orange	11
Pirineo de Girona	Girona	orange	9
Prepirineo de Barcelona	Barcelona	orange	9
Depresión central de Barcelona	Barcelona	orange	8
Prelitoral de Barcelona	Barcelona	orange	8
Sur de Mallorca	Mallorca	orange	7
Antequera	Málaga	orange	6
Grazalema	Cádiz	orange	6
Prelitoral norte de Tarragona	Tarragona	orange	6
Noroeste de Murcia	Murcia	orange	5
Campo de Cartagena y Mazarrón	Murcia	orange	4
Rias Baixas	Pontevedra	orange	4
Valle del Almanzora y Los Vélez	Almería	orange	3
Vertiente cantábrica de Navarra	Navarra	orange	3
Meseta de Segovia	Segovia	orange	14
Meseta de Ávila	Ávila	orange	14
Sistema Central de Ávila	Ávila	orange	14
Bierzo de León	León	orange	13
Ibérica de Soria	Soria	orange	12
Interior sur de Castellón	Castelló/Castellón	orange	5
Litoral sur de Castellón	Castelló/Castellón	orange	5
Norte y nordeste de Mallorca	Mallorca	orange	5
Cordillera y Picos de Europa	Asturias	orange	4
Levante mallorquín	Mallorca	orange	4
Litoral norte de Tarragona	Tarragona	orange	4
Ronda	Málaga	orange	4
Suroccidental asturiana	Asturias	orange	4
Levante almeriense	Almería	orange	3
Gipuzkoa litoral	Gipuzkoa	orange	2

And 36 more zones with yellow warnings only.

What AEMET's stations measured

The most measured in the zones with an orange or red warning, on their warning days: a high of 45.8 °C at Jerez de la Frontera Aeropuerto (Campiña gaditana) on 17 August.

Zone	Highest temperature
Campiña gaditana	45.8 °C Jerez de la Frontera Aeropuerto · 17 August
Vegas del Guadiana	45.5 °C Badajoz · 12 August
Campiña cordobesa	45.3 °C Montoro · 17 August
Campiña sevillana	45.3 °C Tomares, Zaudín · 17 August
Vega del Segura	45.1 °C Murcia · 18 August
Sierra sur de Sevilla	45.0 °C La Roda de Andalucía · 17 August
Litoral sur de Alicante	44.9 °C Orihuela · 18 August
Litoral de Huelva	44.8 °C Almonte · 17 August
Sierras de Alcudia y Madrona	44.6 °C Almadén · 12 August
Litoral sur de Valencia	44.5 °C Carcaixent · 16 August
Tajo y Alagón	44.2 °C Serradilla · 12 August
Bajo Aragón de Teruel	44.0 °C Hijar · 11 August
Morena y Condado	43.9 °C Andújar · 17 August
Subbética cordobesa	43.8 °C Aguilar de la Frontera · 17 August
Valle del Guadalentín, Lorca y Águilas	43.8 °C Totana · 18 August
Interior sur de Valencia	43.7 °C Xàtiva · 16 August
Ribera del Ebro de Zaragoza	43.7 °C Caspe, Plana del Pilón · 11 August
Antequera	43.6 °C Antequera Ayuntamiento (automática Thies) · 17 August
Este, sur y oeste de Gran Canaria	43.6 °C La Aldea de San Nicolás, Tasarte · 9 August
Sierra norte de Sevilla	43.6 °C La Puebla de los Infantes · 17 August

And 120 more zones with an orange or red warning.

For each zone, the highest value its AEMET stations measured on the episode's warning days (the lowest, for the low temperature), with the station and the day. Rain from 07:00 to 07:00 UTC; gust: the day's strongest. It is what the zone's stations measured, not every town, and a measurement, like a warning, is not damage.

How AEMET's warnings unfolded

The red warning reached 58 zone-days. AEMET issued it ahead of time in 46 of them (median: 25 h) and for the current hour in the other 12: warnings are also raised as things unfold. The first warning of any level for those same days had come a median 43 h earlier.

Zone	Day	First warning	Red issued	For · notice
Cumbres de Gran Canaria	Sat 9	Wed 6 Aug, 23:50 orange	Fri 8 Aug, 11:21	12:00 · 25 h before
Este, sur y oeste de Gran Canaria	Sat 9	Wed 6 Aug, 23:50 orange	Fri 8 Aug, 11:21	12:00 · 25 h before
Cumbres de Gran Canaria	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Este, sur y oeste de Gran Canaria	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Este, sur y oeste de Tenerife	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Fuerteventura	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Lanzarote	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Área metropolitana de Tenerife	Sun 10	Thu 7 Aug, 23:50 orange	Fri 8 Aug, 11:31	12:00 · 48 h before
Cumbres de Gran Canaria	Mon 11	Fri 8 Aug, 23:50 orange	Sat 9 Aug, 11:42	12:00 · 48 h before
Este, sur y oeste de Gran Canaria	Mon 11	Fri 8 Aug, 23:50 orange	Sat 9 Aug, 11:42	12:00 · 48 h before
Gipuzkoa interior	Mon 11	Fri 8 Aug, 23:50 orange	08:55	13:00 · 4 h before
Ribera del Ebro de Zaragoza	Mon 11	Fri 8 Aug, 23:50 orange	09:04	13:00 · 4 h before
Campiña sevillana	Tue 12	Sat 9 Aug, 23:50 orange	Mon 11 Aug, 11:28	13:00 · 26 h before
Bizkaia interior	Tue 12	Mon 11 Aug, 09:42 orange	Mon 11 Aug, 18:23	13:00 · 19 h before
Gipuzkoa interior	Tue 12	Mon 11 Aug, 09:42 orange	Mon 11 Aug, 18:23	13:00 · 19 h before

And 43 more zone-days.

The full timeline: 927 changes at orange or red

Only the changes involving red are listed: there were 927 in all.

Fri 8 August

11:21 Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria: Raises the heat warning to red: Saturday 9, 12:00–21:00. Highs of 40 °C.
11:31 Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria, Este, sur y oeste de Tenerife, Fuerteventura, Lanzarote, Área metropolitana de Tenerife: Raises the heat warning to red: Sunday 10, 12:00–21:00. Highs of 40 °C.

Sat 9 August

11:42 Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria: Raises the heat warning to red: Monday 11, 12:00–21:00. Highs of 40 °C.

Mon 11 August

08:55 Gipuzkoa interior: Raises the heat warning to red: Monday 11, 13:00–21:00. Highs of 40 °C.
08:57 Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria: Lowers the heat warning to orange: Monday 11, 12:00–21:00. Highs of 37 °C.
09:04 Ribera del Ebro de Zaragoza: Raises the heat warning to red: Monday 11, 13:00–21:00. Highs of 42 °C.
11:28 Campiña sevillana: Raises the heat warning to red: Tuesday 12, 13:00–21:00. Highs of 44 °C.
18:23 Bizkaia interior, Gipuzkoa interior: Raises the heat warning to red: Tuesday 12, 13:00–21:00. Highs of 40 °C.
19:00 Campiña cordobesa: Raises the heat warning to red: Tuesday 12, 13:00–21:00. Highs of 44 °C.
19:56 Litoral de Huelva: Raises the heat warning to red: Tuesday 12, 13:00–21:00. Highs of 42 °C.

Tue 12 August

16:14 Vegas del Guadiana: Raises the heat warning to red: Tuesday 12, 17:00–21:00. Highs of 45 °C.
17:05 Campiña gaditana: Raises the heat warning to red: Tuesday 12, 18:00–21:00. Highs of 44 °C.
17:05 Litoral gaditano: Raises the heat warning to red: Tuesday 12, 18:00–21:00. Highs of 42 °C.
17:18 Villuercas y Montánchez: Raises the heat warning to red: Tuesday 12, 18:00–21:00. Highs of 42 °C.

Thu 14 August

10:58 Bizkaia interior, Litoral cántabro: Raises the heat warning to red: Friday 15, 13:00–21:00. Highs of 40 °C.
12:38 Vegas del Guadiana: Raises the heat warning to red: Thursday 14, 13:00–21:00. Highs of 44 °C.

Fri 15 August

10:47 Campiña sevillana: Raises the heat warning to red: Saturday 16, 13:00–21:00. Highs of 44 °C.
11:31 Campiña cordobesa, Campiña sevillana: Raises the heat warning to red: Sunday 17, 13:00–21:00. Highs of 44 °C.
14:45 Central y Valles Mineros: Raises the heat warning to red: Friday 15, 15:00–21:00. Highs of 40 °C.
15:05 Bizkaia litoral, Gipuzkoa interior: Raises the heat warning to red: Friday 15, 16:00–21:00. Highs of 40 °C.
15:52 Centro y valle de Villaverde, Liébana: Raises the heat warning to red: Friday 15, 16:00–21:00. Highs of 40 °C.
19:01 Vega del Segura: Raises the heat warning to red: Sunday 17, 13:00–21:00. Highs of 44 °C.

Sat 16 August

08:58 Depresión central de Tarragona, Prelitoral sur de Tarragona: Raises the heat warning to red: Saturday 16, 13:00–21:00. Highs of 42 °C.
09:33 Litoral norte de Valencia, Litoral sur de Valencia: Raises the heat warning to red: Saturday 16, 12:00–20:00. Highs of 42 °C.
10:44 Depresión central de Lleida, Depresión central de Tarragona, Prelitoral sur de Tarragona, Ribera del Ebro de Zaragoza: Raises the heat warning to red: Sunday 17, 13:00–21:00. Highs of 42 °C.
10:45 Litoral sur de Alicante: Raises the heat warning to red: Sunday 17, 12:00–20:00. Highs of 42 °C.
18:37 Vegas del Guadiana, Villuercas y Montánchez: Raises the heat warning to red: Sunday 17, 11:00–21:00. Highs of 44 °C.
18:54 Vega del Segura: Brings the red heat warning forward: now from 11:00 on Sunday 17. Highs of 44 °C.
18:59 Campiña cordobesa, Campiña sevillana: Brings the red heat warning forward: now from 11:00 on Sunday 17. Highs of 44 °C.
18:59 Campiña gaditana: Raises the heat warning to red: Sunday 17, 11:00–21:00. Highs of 44 °C.
19:02 Ampurdán, Litoral sur de Tarragona: Raises the heat warning to red: Sunday 17, 11:00–20:00. Highs of 40 °C.
19:02 Depresión central de Lleida, Depresión central de Tarragona, Prelitoral sur de Tarragona, Ribera del Ebro de Zaragoza: Brings the red heat warning forward: now from 11:00 on Sunday 17. Highs of 42 °C.
19:06 Litoral sur de Alicante: Brings the red heat warning forward: now from 11:00 on Sunday 17. Highs of 42 °C.
19:06 Litoral sur de Valencia: Raises the heat warning to red: Sunday 17, 11:00–20:00. Highs of 42 °C.

Sun 17 August

08:51 Morena y Condado, Valle del Guadalquivir de Jaén: Raises the heat warning to red: Sunday 17, 11:00–21:00. Highs of 44 °C.
08:56 Centro de Navarra, Ribera del Ebro de Navarra: Raises the heat warning to red: Sunday 17, 11:00–21:00. Highs of 42 °C.
08:58 Ribera del Ebro de La Rioja: Raises the heat warning to red: Sunday 17, 11:00–21:00. Highs of 42 °C.
11:01 Litoral sur de Alicante: Raises the heat warning to red: Monday 18, 12:00–20:00. Highs of 42 °C.
11:28 Vega del Segura: Raises the heat warning to red: Monday 18, 13:00–21:00. Highs of 44 °C.
14:47 Litoral gaditano: Raises the heat warning to red: Sunday 17, 15:00–21:00. Highs of 42 °C.
15:29 Litoral de Huelva: Raises the heat warning to red: Sunday 17, 16:00–21:00. Highs of 42 °C.
15:29 Sierra sur de Sevilla: Raises the heat warning to red: Sunday 17, 16:00–21:00. Highs of 44 °C.

AEMET's issue times, in mainland Spain time (Canary Islands in island time). Notice is the time from issue to the first hour the warning covered; a warning issued “for the current hour” runs from the hour it is published.

What this says and what it doesn't

A warning is an AEMET forecast, not a measurement or a damage report: it says a threshold is expected to be exceeded in a zone. A warning is not damage; a zone is not a building.

A zone-day is one warning zone with a warning on one day. Ten zones at orange on the same day make ten zone-days. A day with several warnings in one zone counts once, at its highest level.

Each zone has its own thresholds, so an orange heat warning in Asturias doesn't mean the same temperature as in Córdoba. More in how warnings work.

To cite: “Climaviso, from AEMET warnings”.

Source: official AEMET warnings, collected by Climaviso since June 2018.

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