San Sebastián weather in March
March in San Sebastián: nice, dry, with clean air — one of the best months to visit.
#2 of 12 months in San Sebastián · #64 of 604 destinations to visit in March · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
San Sebastián climate normals — March
| Daytime high | 21°C / 70°F | 😎 nice |
|---|---|---|
| Nighttime low | 19°C / 65°F | |
| Feels like (high) | 23°C / 73°F | |
| Rainfall | 8 mm / 0.3 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 15°C / 59°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 12 h | |
| Wind | 24 km/h / 15 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is San Sebastián?
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San Sebastián in March — FAQ
- Is March a good time to visit San Sebastián?
- March in San Sebastián: nice, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for San Sebastián on SeasonMap's comfort score (89/100).
- What is the weather like in San Sebastián in March?
- In March, San Sebastián averages a daily high of 21°C and a low of 18.6°C, with about 8 mm of rain over roughly 1.6 rainy days.
- What is the air quality in San Sebastián in March?
- San Sebastián has a mean US Air Quality Index of about 41 in March.