ClimavisoSpain's weather warnings in 2023
Full year, 1 January to 31 December 2023.
In 2023, Spain's 182 warning zones added up to 11,466 zone-days with a warning: 9,445 yellow, 1,919 orange and 102 red. Somewhere in Spain had a warning on 333 of the year's 365 days.
Highlights
- 2023 had the most zone-days with a cold warning of any year from 2019 to 2025: 1,415. Next was 2021, with 985.
By warning type, year by year
All warnings
11,466
Red warnings
102
Rain
3,896
Storms
3,249
Wind
2,455
Heat
3,165
Coldhigh
1,415
Snow
572
Fog
308
Dust
131
Each bar is a full year. The dark bar is 2023.
Month by month
Zone-days with a warning each month. The tick marks the 2019–2025 median for that month.
The red warnings of 2023
28 days with a red warning somewhere; 102 zone-days in all.
- 14 September red for rain Litoral sur de Valencia
- 10 September red for rain Cuenca del Nervión
- 3 September red for rain Campiña gaditana, La Mancha toledana, Metropolitana y Henares, Sierra de Madrid, Sur, Vegas y Oeste
- 24 August red for heat Ribera del Ebro de La Rioja, Ribera del Ebro de Navarra, Ribera del Ebro de Zaragoza
- 23 August red for heat Ampurdán, Bizkaia interior, Cuenca del Nervión, Gipuzkoa interior
- 13 August red for heat Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria
- 12 August red for heat Cumbres de Gran Canaria, Cumbres de La Palma, Este, sur y oeste de Gran Canaria, Este, sur y oeste de Tenerife, Fuerteventura, La Gomera, Lanzarote, Oeste de La Palma, Área metropolitana de Tenerife
- 11 August red for heat Andévalo y Condado, Campiña cordobesa, Campiña sevillana, Cumbres de Gran Canaria, Cumbres de La Palma, Este, sur y oeste de Gran Canaria, Este, sur y oeste de Tenerife, Fuerteventura, La Gomera, Lanzarote, Litoral de Huelva, Oeste de La Palma, Área metropolitana de Tenerife
- 10 August red for heat Altiplano de Murcia, Hellín y Almansa, Interior sur de Castellón, Interior sur de Valencia, Litoral norte de Valencia, Litoral sur de Alicante, Litoral sur de Valencia, Vega del Segura
- 9 August red for heat Bizkaia interior, Campiña cordobesa, Cuenca del Genil, Cuenca del Nervión, Gipuzkoa interior, La Mancha conquense, Metropolitana y Henares, Morena y Condado, Norte de Burgos, Serranía de Cuenca, Sur, Vegas y Oeste, Valle del Guadalquivir de Jaén
- 8 August red for heat Campiña cordobesa
- 2 August red for heat Sol y Guadalhorce
- 20 July red for heat Sol y Guadalhorce
- 19 July red for heat Litoral sur de Alicante, Sol y Guadalhorce, Vega del Segura
- 18 July red for heat Ampurdán, Bajo Aragón de Teruel, Depresión central de Barcelona, Depresión central de Lleida, Interior de Mallorca, La Mancha albaceteña, Norte y nordeste de Mallorca, Prelitoral de Girona, Ribera del Ebro de Zaragoza, Sur de Huesca
- 17 July red for heat Campiña cordobesa, Morena y Condado, Valle del Guadalquivir de Jaén
- 13 July red for heat Cumbres de Gran Canaria, Este, sur y oeste de Gran Canaria
- 12 July red for heat Cumbres de Gran Canaria, Sol y Guadalhorce, Valle del Almanzora y Los Vélez, Valle del Guadalentín, Lorca y Águilas, Vega del Segura
- 11 July red for heat Bajo Aragón de Teruel, Cuenca del Genil, La Mancha albaceteña, Ribera del Ebro de Zaragoza
- 10 July red for heat Campiña cordobesa, Cazorla y Segura, Morena y Condado, Valle del Guadalquivir de Jaén
- 29 June red for rain Depresión central de Barcelona
- 26 June red for heat Campiña cordobesa, Campiña sevillana
- 23 May red for rain Campo de Cartagena y Mazarrón
- 20 May red for rain Vertiente cantábrica de Navarra
- 28 February red for cold Parameras de Molina · red for snow Sierra Tramontana
- 27 February red for snow Sierra Tramontana
- 17 January red for snow Pirineo oscense
- 16 January red for snow Pirineo oscense
The zones with the most warning days
| Zone | Province | Warning days | Orange | Red |
|---|---|---|---|---|
| Pirineo oscense | Huesca | 139 | 35 | 2 |
| Pirineo de Lleida | Lleida | 130 | 26 | 0 |
| Pirineo de Girona | Girona | 116 | 19 | 0 |
| Albarracín y Jiloca | Teruel | 114 | 10 | 0 |
| Ibérica zaragozana | Zaragoza | 111 | 15 | 0 |
| Depresión central de Lleida | Lleida | 110 | 14 | 1 |
| Gúdar y Maestrazgo | Teruel | 107 | 10 | 0 |
| Valle de Arán | Lleida | 107 | 17 | 0 |
| La Mancha albaceteña | Albacete | 105 | 15 | 2 |
| Serranía de Cuenca | Cuenca | 103 | 18 | 1 |
By region
| Region | Zones | Warning days per zone | Earlier years | Change |
|---|---|---|---|---|
| Aragón | 9 | 100 | 86 | +15% |
| Cataluña | 16 | 81 | 74 | +10% |
| Comunidad de Madrid | 3 | 81 | 70 | +16% |
| La Rioja | 2 | 77 | 66 | +16% |
| Castilla y León | 24 | 75 | 61 | +22% |
| Illes Balears | 7 | 75 | 68 | +9% |
| Comunidad Foral de Navarra | 4 | 72 | 68 | +7% |
| Castilla - La Mancha | 17 | 72 | 59 | +23% |
| Comunitat Valenciana | 11 | 61 | 61 | -1% |
| Región de Murcia | 5 | 55 | 43 | +27% |
| Canarias | 13 | 53 | 42 | +26% |
| Cantabria | 4 | 52 | 53 | -1% |
| Andalucía | 29 | 51 | 43 | +19% |
| Extremadura | 8 | 49 | 49 | +1% |
| Galicia | 16 | 49 | 40 | +23% |
| País Vasco | 7 | 47 | 43 | +9% |
| Principado de Asturias | 5 | 35 | 39 | -9% |
| Ciudad de Ceuta | 1 | 23 | 18 | +31% |
| Ciudad de Melilla | 1 | 20 | 17 | +15% |
Average warning days per zone. “Earlier years” is the average of the other full years since 2019.
How to read these numbers
A zone-day is one warning zone with a warning on one day. Spain has 182 zones: ten zones warned on the same day make ten zone-days. A day with several warnings in one zone counts once, at its highest level; each warning type counts once per type.
A warning is a forecast, not a measurement: it says a threshold is expected to be exceeded in a zone. Each zone has its own thresholds (a yellow heat warning doesn't start at the same temperature in Asturias as in Córdoba), so these numbers count how often a warning was issued, not how hot or wet it was. For measured temperature and rain, see AEMET's climate summaries.
Thresholds have barely changed: according to Maldita, maximum-temperature thresholds have changed in only 10 of the 182 zones since 2006, always upwards. More heat warnings are not explained by lower thresholds.
The archive starts on 18 June 2018, so comparisons start in 2019. More on levels, thresholds and zones in how warnings work.
To cite: “Climaviso, from AEMET warnings”.
Other years
2026, so far · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019
Sources
- Warnings: AEMET's warning archive (CAP format, AEMET OpenData), collected by Climaviso since June 2018.
- Warning levels and issue times: AEMET, how to read warnings (Spanish).
- Threshold changes: Maldita, 5 September 2024 (Spanish).