Climate averages 1991–2020
San Sebastián de los Reyes weather
in August.
A hot, very dry month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in San Sebastián de los Reyes: daytime highs average 31.1°C and nights cool to about 17.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 8.1 mm of rain on roughly 2 days, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 47 min on an average August day.
The nearest other city in this atlas is Alcobendas (2 km away). In August its highs average 31.2°C, about as warm as San Sebastián de los Reyes, with 8.1 mm of rain.
Among the 93 cities listed in Spain, San Sebastián de los Reyes ranks 37th of 93 for the warmest August highs and joint 31st of 93 for the driest August (rainfall, lowest first). The mean August high of those 93 cities is 29.3°C; San Sebastián de los Reyes is 1.8°C warmer than that mean.
From August to September, average highs fall by 5.3°C to 25.8°C, and monthly rainfall rises from 8.1 mm to 20 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Sebastián de los Reyes climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.3°C0.7°C | 0.7°C | 38 | 6.6 | 9.610 h |
| February | 11.2°C1.0°C | 1.0°C | 32 | 5.6 | 10.611 h |
| March | 14.8°C3.3°C | 3.3°C | 39 | 6.4 | 11.912 h |
| April | 17.3°C5.7°C | 5.7°C | 44 | 7.4 | 13.313 h |
| May | 21.6°C9.5°C | 9.5°C | 37 | 6.6 | 14.414 h |
| June | 27.4°C14.3°C | 14.3°C | 15 | 3.2 | 15.015 h |
| July | 31.4°C17.5°C | 17.5°C | 6.3 | 1.4 | 14.815 h |
| August, selected | 31.1°C17.4°C | 17.4°C | 8.1 | 2.0 | 13.814 h |
| September | 25.8°C13.6°C | 13.6°C | 20 | 3.8 | 12.513 h |
| October | 19.4°C9.2°C | 9.2°C | 58 | 7.3 | 11.211 h |
| November | 13.1°C4.5°C | 4.5°C | 53 | 6.9 | 10.010 h |
| December | 9.9°C1.7°C | 1.7°C | 43 | 6.8 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Alcobendas in AugustSpain · 2 kmHigh 31.2°C · Low 17.6°C · 8.1 mm rain
- Chamartín in AugustSpain · 11 kmHigh 30.9°C · Low 17.4°C · 8.1 mm rain
- Coslada in AugustSpain · 16 kmHigh 32.1°C · Low 18.8°C · 9.6 mm rain
- Madrid in AugustSpain · 17 kmHigh 31.7°C · Low 18.3°C · 8.1 mm rain
- Torrejón de Ardoz in AugustSpain · 17 kmHigh 32.0°C · Low 18.4°C · 9.6 mm rain
- Pozuelo de Alarcón in AugustSpain · 21 kmHigh 31.3°C · Low 18.2°C · 8.1 mm rain
- Las Rozas de Madrid in AugustSpain · 22 kmHigh 30.9°C · Low 17.4°C · 8.1 mm rain
- Alcalá de Henares in AugustSpain · 24 kmHigh 32.0°C · Low 18.3°C · 12 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San Sebastián de los Reyes) is explained once on the San Sebastián de los Reyes year overview and on the Sources, method and limits page.
Madrid, Chamartín and Alcobendas lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.