Month guide · Sestao, Spain
Sestao in August: weather and what to expect
August is the warmest month of the year in Sestao. The sea is around 22°C, warm enough for most swimmers. In August, Sestao averages highs of 23°C and lows of 17°C, with about 13 rainy days and 64 mm of rain. Crowds in Basque Country are at their peak.
Is August a good time to visit?
Good for
No verdicts for Sestao in August yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 13 rainy days in the month
Daily highs through August
Town-level · ERA5-Land 1991-2020Highs fall about 1°C over the month. A day above 30°C happens in roughly 1 August in 2.
August in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in August 2027
No national or regional public holidays.
Local (municipal) holidays are not included.
Warmer in August
Where is warm in August →| Place | High | Rain days | From Sestao |
|---|---|---|---|
| Guarromán, Andalusia | 35°C | 1 | 573 km |
| Arquillos, Andalusia | 35°C | 2 | 571 km |
| Bailén, Andalusia | 35°C | 1 | 583 km |
| Baños de la Encina, Andalusia | 35°C | 1 | 575 km |
| Linares, Andalusia | 35°C | 1 | 582 km |
The nearest towns with a warmer August. Distances are in a straight line.
How August is changing
Town-level · ERA5-LandAugust highs are 0.7°C warmer than in 1991-2000, and August rainfall is down about 15% (2016-2025 against 1991-2000). Days above 25°C in August went from 7.0 to 9.4 a year on average.
Questions about Sestao in August
Is August a good time to visit Sestao?
It is less suited to reliable dry weather (about 13 rainy days in the month).
How warm is Sestao in August?
Average highs are 23°C and lows 17°C. July averages 22°C and September 21°C.
Does it rain much in Sestao in August?
About 13 days have at least 1 mm of rain, with 64 mm in total over the month.
Is Sestao busy in August?
In August 2025, nights booked through online platforms in Basque Country were the busiest month of the year, which we count as peak. The figure is for the whole region and leaves out hotels.
How long are the days in Sestao in August?
About 14 h 01 min from sunrise to sunset in the middle of the month.
Sources
Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology