SeasonMapSantander weather in August
Spain
August in Santander: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Santander · #339 of 1383 destinations to visit in August · comfort 88/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Santander in August
Other months in Santander
Santander's forum describes July as mild rather than hot by Spanish standards, with beautiful sunshine possible but never guaranteed on the Bay of Biscay coast. Regulars are candid that this 'Green Coast' region stays damp and humid much of the time thanks to the surrounding mountains, and that a morning drizzle turning to afternoon sun (or the reverse) is a completely normal pattern.
Add your own note from Santander's card on the map.
Santander climate normals — August
| Daytime high | 23°C / 74°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 25°C / 77°F | |
| Sea temperature | 23°C / 73°F | 🙂 pleasant |
| Rainfall | 63 mm / 2.5 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 13.9 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Santander in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer holidays in Spain, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Santander's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSantander's weather peaks June–August, best around July.
August includes Festival Internacional de Santander.
Best weatherFair weatherToughest weather
What's on in Santander in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Galerna season
1 Jun – 30 Sep · usuallyWind seasonRiskThe Cantabrian coast's own squall: a hot, still afternoon flips inside an hour to a north-westerly gale and a ten-degree drop. Sailors here watch for it all summer.
- Season
Beach season on the Sardinero
1 Jul – 20 Sep · usuallySea warm enoughThe northern coast warms late and cools fast, so the swimming window is roughly July to mid-September. September is the better half of it and the beaches are half as full.
- Festival
Festival Internacional de Santander
1–31 Aug · usuallyMajor festivalA month of classical music built round the Palacio de Festivales, with concerts pushed out into churches and monasteries across Cantabria. Spain's oldest festival of its kind. Source ↗
Nearby, and something's on
Within 300 km of Santander — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Santander?
Santander in August — FAQ
- Is August a good time to visit Santander?
- August in Santander: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Santander on SeasonMap's comfort score (88/100).
- What is the weather like in Santander in August?
- In August, Santander averages a daily high of 23.4°C and a low of 17.9°C, with about 62.6 mm of rain over roughly 8.7 rainy days.
- What is the air quality in Santander in August?
- Santander has a mean US Air Quality Index of about 48 in August.
Other months in Santander
Compare Santander in August
Warmer or cooler than Santander in August
Similar destinations in Southern Europe — August
Within 300 km: Bilbao's Aste Nagusia on 22–30 Aug, and San Sebastián's La Concha swimming season around 1 Jul – 25 Sep.