ClimavisoHeat across much of Spain, 3–6 September 2026
3 September 2026 to 6 September 2026. Updated 26 October 2026.
Over 4 days, 61 of Spain's 182 warning zones had an orange or red warning for heat: 101 zone-days at orange or red, 2 of them red. The day with the most zones at orange or red was 4 September, with 42 zones.
4 September was the day with the most people in zones under an orange or red warning: 15.9 million people live there (INE municipal register, 2025).
How it compares
- It is number 35 of 119 episodes since June 2018 by zone-days at orange or red.
- Among the 37 heat episodes, it is number 24.
Day by day
| Day | Red | Orange | Yellow | Orange or red warnings for |
|---|---|---|---|---|
| Thu 3 September | 2 | 22 | 49 | heat |
| Fri 4 September | — | 42 | 74 | heat |
| Sat 5 September | — | 20 | 93 | heat, storms |
| Sun 6 September | — | 15 | 63 | heat |
Zones with a warning each day, at their highest level that day.
The zones
And 84 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 45.1 °C at Sevilla, Tablada (Campiña sevillana) on 3 September.
| Zone | Highest temperature |
|---|---|
| Campiña sevillana | 45.1 °C Sevilla, Tablada · 3 September |
| Morena y Condado | 44.5 °C Andújar · 3 September |
| Campiña cordobesa | 44.4 °C Montoro · 3 September |
| Aracena | 43.3 °C Aroche · 3 September |
| Litoral de Huelva | 43.3 °C Almonte · 3 September |
| Sierra norte de Sevilla | 43.2 °C La Puebla de los Infantes · 3 September |
| Vegas del Guadiana | 43.2 °C Badajoz · 3 September |
| Andévalo y Condado | 43.1 °C El Cerro de Andévalo · 3 September |
| Sierras de Alcudia y Madrona | 42.8 °C Almadén · 3 September |
| Barros y Serena | 42.7 °C Zafra · 3 September |
| Sur de Badajoz | 42.6 °C Jerez de los Caballeros · 3 September |
| Cazorla y Segura | 42.4 °C Arroyo del Ojanco · 4 September |
| Sierra y Pedroches | 42.1 °C Espiel · 3 September |
| Cuenca del Genil | 42.0 °C Granada Aeropuerto · 4 September |
| Valle del Guadiana | 41.9 °C Puebla de Don Rodrigo · 3 September |
| Norte de Cáceres | 41.6 °C Madrigal de la Vera · 4 September |
| Pirineo de Lleida | 41.4 °C Llimiana · 4 September |
| Sur de Ávila | 41.3 °C Candeleda · 4 September |
| Villuercas y Montánchez | 41.3 °C Alcuescar · 3 September |
| Meseta cacereña | 41.2 °C Aliseda · 3 September |
And 40 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 2 zone-days, and AEMET always issued it for the current hour: warnings are also raised as things unfold. The first warning of any level for those same days had come a median 3 days earlier.
| Zone | Day | First warning | Red issued | For · notice |
|---|---|---|---|---|
| Morena y Condado | Thu 3 | Mon 31 Aug, 23:50 yellow | 17:17 | 17:00 · for the current hour |
| Campiña sevillana | Thu 3 | Mon 31 Aug, 23:50 yellow | 18:31 | 18:00 · for the current hour |
The full timeline: 117 changes at orange or red
Tue 1 September
- Andévalo y Condado, Aracena, La Siberia extremeña, Meseta cacereña, Sierra y Pedroches, Sierras de Alcudia y Madrona, Sur de Badajoz, Tajo y Alagón, Valle del Tajo: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 40 °C.
- Barros y Serena, Vegas del Guadiana: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 41 °C.
- Campiña cordobesa, Campiña sevillana, Morena y Condado, Valle del Guadalquivir de Jaén: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 42 °C.
- Villuercas y Montánchez: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 39 °C.
- Campiña cordobesa: Issues a orange heat warning: Friday 4, 13:00–21:00. Highs of 42 °C.
- Campiña sevillana: Issues a orange heat warning: Friday 4, 13:00–21:00. Highs of 41 °C.
- Depresión central de Lleida, Ribera del Ebro de Zaragoza: Issues a orange heat warning: Friday 4, 13:00–21:00. Highs of 39 °C.
- Morena y Condado, Sierras de Alcudia y Madrona, Valle del Guadalquivir de Jaén, Valle del Tajo: Issues a orange heat warning: Friday 4, 13:00–21:00. Highs of 40 °C.
Wed 2 September
- Serranía de Cuenca: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 37 °C.
- Campiña gaditana, Cazorla y Segura, Sierra norte de Sevilla: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 40 °C.
- Cazorla y Segura, La Siberia extremeña, Tajo y Alagón: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 40 °C.
- Cinco Villas de Zaragoza, Depresión central de Barcelona, Depresión central de Tarragona, Norte de Cáceres, Ribera del Ebro de La Rioja, Ribera del Ebro de Navarra, Sierra de San Vicente, Sur de Huesca, Sur de Ávila, Villuercas y Montánchez: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- Pirineo de Lleida: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Depresión central de Lleida, Ribera del Ebro de Zaragoza, Sur de Huesca: Issues a orange heat warning: Saturday 5, 13:00–21:00. Highs of 39 °C.
Thu 3 September
- Sierra de Madrid: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Valle del Guadiana: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 40 °C.
- Litoral de Huelva: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 39 °C.
- Cuenca del Genil: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 40 °C.
- Metropolitana y Henares, Sur, Vegas y Oeste: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- Serranía de Cuenca: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Sierra de Madrid: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 37 °C.
- Sierra de Madrid: Lowers the heat warning to yellow: Friday 4, 13:00–21:00. Highs of 36 °C.
- Valle del Guadiana: Raises the heat warning to orange: Thursday 3, 13:00–21:00. Highs of 40 °C.
- Sierra de Madrid: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Bajo Aragón de Teruel, Centro de Huesca, Ibérica zaragozana, Prelitoral sur de Tarragona: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- Pirineo oscense: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 38 °C.
- Centro de Navarra: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- Gipuzkoa interior: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Ampurdán: Raises the heat warning to orange: Saturday 5, 12:00–20:00. Highs of 37 °C.
- Pirineo de Lleida, Sur de Ávila: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 39 °C.
- Sierra de San Vicente: Issues a orange heat warning: Saturday 5, 13:00–21:00. Highs of 39 °C.
- Valle del Tajo: Issues a orange heat warning: Saturday 5, 13:00–21:00. Highs of 40 °C.
- Vegas del Guadiana: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 40 °C.
- Morena y Condado: Raises the heat warning to red: Thursday 3, 18:00–21:00. Highs of 44 °C.
- Campiña sevillana: Raises the heat warning to red: Thursday 3, 19:00–21:00. Highs of 45 °C.
- Cantabria del Ebro: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 37 °C.
- Depresión central de Lleida, Ribera del Ebro de Zaragoza, Sur de Huesca: Issues a orange heat warning: Sunday 6, 13:00–21:00. Highs of 39 °C.
Fri 4 September
- Interior norte de Valencia: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- Cuenca del Genil, Guadix y Baza: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 40 °C.
- Alcaraz y Segura, Hellín y Almansa, La Mancha albaceteña, La Mancha conquense: Raises the heat warning to orange: Friday 4, 13:00–21:00. Highs of 39 °C.
- La Siberia extremeña: Lowers the heat warning to yellow: Friday 4, 13:00–21:00. Highs of 39 °C.
- Depresión central de Barcelona, Depresión central de Tarragona, Prelitoral de Barcelona: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 39 °C.
- Pirineo de Girona: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 37 °C.
- Pirineo oscense: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 38 °C.
- Centro de Navarra: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 39 °C.
- Pirineo navarro: Raises the heat warning to orange: Saturday 5, 13:00–21:00. Highs of 37 °C.
- Sierra de San Vicente: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 37 °C.
- Valle del Tajo: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 38 °C.
- Sur de Ávila: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 37 °C.
- Vegas del Guadiana: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 38 °C.
- Depresión central de Barcelona, Prelitoral de Barcelona, Prelitoral sur de Tarragona: Raises the heat warning to orange: Sunday 6, 13:00–21:00. Highs of 39 °C.
- Depresión central de Tarragona: Raises the heat warning to orange: Sunday 6, 13:00–21:00. Highs of 40 °C.
- Pirineo de Girona, Pirineo de Lleida, Prepirineo de Barcelona: Raises the heat warning to orange: Sunday 6, 13:00–21:00. Highs of 38 °C.
- Depresión central de Barcelona: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 38 °C.
- Prelitoral de Barcelona: Lowers the heat warning to yellow: Saturday 5, 13:00–21:00. Highs of 36 °C.
Sat 5 September
- Centro de Lugo, Montaña de Lugo, Suroccidental asturiana: Raises the storms warning to orange: Saturday 5, 16:00–22:00. Hail possible · strong gusts.
- Centro de Lugo, Montaña de Lugo, Suroccidental asturiana: Extends the orange storms warning: now until 24:00 on Saturday 5. Hail possible · strong gusts.
- Campiña cordobesa, Campiña sevillana, Morena y Condado, Valle del Guadalquivir de Jaén: Raises the heat warning to orange: Sunday 6, 13:00–21:00. Highs of 40 °C.
- Ribera del Ebro de Zaragoza, Sur de Huesca: Lowers the heat warning to yellow: Sunday 6, 13:00–21:00. Highs of 38 °C.
- Sur de Lugo: Raises the storms warning to orange: Saturday 5, 19:00–21:00. Hail possible · strong gusts.
- Gipuzkoa interior: Raises the heat warning to orange: Sunday 6, 13:00–21:00. Highs of 37 °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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