Verdict: Good month
San Sebastián Weather in March
March is mild-to-cool in San Sebastián, topping out near 16°C (61°F) — comfortable with a layer on. It's also the wet side of the calendar: rain falls on about 16 days, so build flexibility into plans. Overall, March is a solid month to visit San Sebastián.
Average high
16°C / 61°F
Average low
8°C / 46°F
Rain days
~16
Precipitation
150 mm
What to pack for San Sebastián in March
- Layers — t-shirts under a light jacket or sweater
- Evenings turn genuinely cool — pack a warm layer for after dark
- Rain gear is non-negotiable — expect rain on roughly 16 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
March against the rest of the year
Warmest in San Sebastián: Aug (25°C / 77°F) · Coolest: Jan (12°C / 54°F) · Wettest: Dec (~17 rain days)
12°
6°
Jan
15°
8°
Feb
16°
8°
Mar
17°
10°
Apr
20°
12°
May
22°
15°
Jun
24°
17°
Jul
25°
18°
Aug
23°
16°
Sep
21°
14°
Oct
16°
10°
Nov
14°
8°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)