San Sebastián weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Fair
Best time to visit: May – October
What is the weather like in San Sebastián in March?
In March, San Sebastián is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sea averages 12.6 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. It rains often – on about 15 days, adding up to 115 mm. All in all, March is a so-so month for a holiday in San Sebastián.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 34 | 46 | 54 |
| Day | 12° | 14° | 15° |
| Night | 7° | 8° | 9° |
| Sea | 12° | 13° | 14° |
| Sun | 5 h | 6 h | 7 h |
| Rain days | 14 | 15 | 15 |
More details for March
- Daylight
- 11 h 51 min07:22 – 19:13
- UV index
- 4 · moderateclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 20 km/haverage daily peak
- Cloud cover
- 64 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Madrid
How the score comes together
- Temperatureweight 50 %57 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %23 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
San Sebastián in March: quick answers
Is San Sebastián hot in March?
No. In March, San Sebastián is cool: daytime highs average 14 °C and nights drop to about 8 °C.
Can you swim in San Sebastián in March?
Only if you don't mind cold water: in March the sea averages just 12.6 °C. Comfortable swimming is possible from July to September.
Does it rain much in San Sebastián in March?
It rains often – on about 15 days, adding up to 115 mm.
San Sebastián month by month
The whole year in San SebastiánAll destinations: Spain
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)