ClimavisoAugust 2024 heatwave: heat across much of Spain, 8–15 August 2024
8 August 2024 to 15 August 2024. Updated 26 October 2026.
AEMET records a heatwave from 4 August to 12 August 2024.
Over 8 days, 98 of Spain's 182 warning zones had an orange or red warning for heat: 177 zone-days at orange or red, 9 of them red. The day with the most zones at orange or red was 10 August, with 49 zones.
10 August was the day with the most people in zones under an orange or red warning: 17.5 million people live there (INE municipal register, 2025).
How it compares
- It is number 16 of 119 episodes since June 2018 by zone-days at orange or red.
- Among the 37 heat episodes, it is number 14.
- There hadn't been a heat episode this widespread since August 2023.
Day by day
| Day | Red | Orange | Yellow | Orange or red warnings for |
|---|---|---|---|---|
| Thu 8 August | — | 10 | 59 | heat |
| Fri 9 August | — | 27 | 55 | heat |
| Sat 10 August | — | 49 | 60 | heat |
| Sun 11 August | 7 | 33 | 64 | heat |
| Mon 12 August | — | 3 | 56 | rain, storms, heat |
| Tue 13 August | — | 14 | 32 | storms, rain |
| Wed 14 August | — | 27 | 31 | rain, storms |
| Thu 15 August | 2 | 5 | 16 | rain |
Zones with a warning each day, at their highest level that day.
The zones
And 60 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 44.2 °C at Almadén (Sierras de Alcudia y Madrona) on 10 August.
| Zone | Highest temperature |
|---|---|
| Sierras de Alcudia y Madrona | 44.2 °C Almadén · 10 August |
| Campiña cordobesa | 43.8 °C Montoro · 10 August |
| Morena y Condado | 43.7 °C Bailén · 10 August |
| Liébana | 43.1 °C Cillorigo de Liébana, Tama · 11 August |
| Sur de Ávila | 43.0 °C Candeleda · 9 August |
| Bizkaia litoral | 42.9 °C Bilbao Aeropuerto · 11 August |
| Valle del Tajo | 42.9 °C Oropesa · 9 August |
| Centro y valle de Villaverde | 42.7 °C Ramales de la Victoria · 11 August |
| Cazorla y Segura | 42.6 °C Cazorla · 11 August |
| La Siberia extremeña | 42.5 °C Navalvillar de Pela · 10 August |
| Vegas del Guadiana | 42.5 °C Badajoz · 10 August |
| Tajo y Alagón | 42.3 °C Navalmoral de la Mata · 9 August |
| Bizkaia interior | 42.1 °C Sopuerta · 11 August |
| Gipuzkoa litoral | 41.9 °C Donostia / San Sebastián Aeropuerto · 11 August |
| Norte de Burgos | 41.9 °C Miranda de Ebro · 11 August |
| Ribera del Ebro de Zaragoza | 41.8 °C Quinto · 11 August |
| Miño de Ourense | 41.7 °C Ourense · 10 August |
| Valle del Guadalquivir de Jaén | 41.7 °C Baeza · 11 August |
| Centro de Navarra | 41.6 °C Cáseda · 10 August |
| Metropolitana y Henares | 41.6 °C Alcala de Henares · 9 August |
And 78 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 9 zone-days. AEMET issued it ahead of time in 7 of them (median: 2 days) and for the current hour in the other 2: warnings are also raised as things unfold. The first warning of any level for those same days had come a median 24 h earlier.
| Zone | Day | First warning | Red issued | For · notice |
|---|---|---|---|---|
| Bizkaia interior | Sun 11 | Thu 8 Aug, 23:50 orange | Fri 9 Aug, 11:35 | 13:00 · 49 h before |
| Centro y valle de Villaverde | Sun 11 | Thu 8 Aug, 23:50 yellow | Fri 9 Aug, 11:35 | 13:00 · 49 h before |
| Gipuzkoa interior | Sun 11 | Thu 8 Aug, 23:50 orange | Fri 9 Aug, 11:35 | 13:00 · 49 h before |
| Liébana | Sun 11 | Thu 8 Aug, 23:50 yellow | Fri 9 Aug, 11:35 | 13:00 · 49 h before |
| Bizkaia litoral | Sun 11 | Thu 8 Aug, 23:50 orange | Sat 10 Aug, 11:14 | 13:00 · 26 h before |
| Litoral cántabro | Sun 11 | Fri 9 Aug, 11:35 orange | Sat 10 Aug, 11:14 | 13:00 · 26 h before |
| Gipuzkoa litoral | Sun 11 | Thu 8 Aug, 23:50 orange | 15:50 | 15:00 · for the current hour |
| Norte y nordeste de Mallorca | Thu 15 | Mon 12 Aug, 23:50 yellow | Wed 14 Aug, 12:19 | 00:00 · 12 h before |
| Menorca | Thu 15 | Mon 12 Aug, 23:50 yellow | 16:28 | 16:00 · for the current hour |
The full timeline: 245 changes at orange or red
Only the changes involving red are listed: there were 245 in all.
Fri 9 August
- Bizkaia interior, Gipuzkoa interior: Raises the heat warning to red: Sunday 11, 13:00–21:00. Highs of 40 °C.
- Centro y valle de Villaverde, Liébana: Raises the heat warning to red: Sunday 11, 13:00–21:00. Highs of 40 °C.
Sat 10 August
- Bizkaia litoral, Litoral cántabro: Raises the heat warning to red: Sunday 11, 13:00–21:00. Highs of 40 °C.
Sun 11 August
- Gipuzkoa litoral: Raises the heat warning to red: Sunday 11, 16:00–21:00. Highs of 40 °C.
Wed 14 August
- Norte y nordeste de Mallorca: Raises the rain warning to red: Thursday 15, 00:00–15:00. Up to 180 mm in 12 h.
Thu 15 August
- Norte y nordeste de Mallorca: Lowers the rain warning to orange: Thursday 15, 12:00–18:00. Up to 50 mm in 1 h.
- Menorca: Raises the rain warning to red: Thursday 15, 17:00–20:00. Up to 180 mm in 12 h.
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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