☀️ SunnyWhen

Best Time to Visit San Sebastian

Spain · 30-year monthly climate averages

☀️ When to go

Based on 30 years of climate data, the most comfortable months to visit San Sebastian are June, July and August, when daytime temperatures are agreeable and rainfall is relatively low.

JuneJulyAugust

Climate profile

San Sebastian sees its warmest weather in August, when daytime highs average around 23°C, and its coolest in January (around 11°C).

Annual precipitation totals roughly 1566mm — November is typically the wettest month (~202mm) and July the driest (~92mm).

A distinctly wetter period runs from September to May — worth planning around if you prefer dry days.

July is the sunniest month, with about 206 hours of sunshine.

Year at a glance

JanFebMarAprMayJunJulAugSepOctNovDec0°11°23°

🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall

🔥 Recent heat vs normal

Daily forecast highs vs the 30-year normal — last 60 days

30/ 60
days ≥2°C above normal
31°C
highest recorded · August 24
+2.5°C
avg anomaly · vs 30-year normal
2026-08-02: +1.5°C2026-08-03: +1.0°C2026-08-04: +1.4°C2026-08-05: +0.7°C2026-08-06: +0.1°C2026-08-07: +1.5°C2026-08-08: +3.4°C2026-08-09: +2.2°C2026-08-10: +1.4°C2026-08-11: +3.0°C2026-08-12: +4.5°C2026-08-13: +4.9°C2026-08-14: +2.8°C2026-08-15: +1.4°C2026-08-16: +2.4°C2026-08-17: +2.2°C2026-08-18: +1.9°C2026-08-19: +1.8°C2026-08-20: +1.2°C2026-08-21: -1.5°C2026-08-22: +2.9°C2026-08-23: +6.6°C2026-08-24: +7.9°C2026-08-25: +1.1°C2026-08-26: +6.6°C2026-08-27: +1.0°C2026-08-28: +2.0°C2026-08-29: +2.8°C2026-08-30: +1.1°C2026-08-31: -0.3°C2026-09-01: +1.7°C2026-09-02: +2.0°C2026-09-03: +4.4°C2026-09-04: +7.2°C2026-09-05: +4.2°C2026-09-06: +9.4°C2026-09-07: +2.9°C2026-09-08: +2.5°C2026-09-09: -1.4°C2026-09-10: -0.8°C2026-09-11: +0.2°C2026-09-12: +0.7°C2026-09-13: +2.8°C2026-09-14: +5.0°C2026-09-15: +4.3°C2026-09-16: -0.3°C2026-09-17: -1.1°C2026-09-18: -0.5°C2026-09-19: 0.0°C2026-09-20: +1.5°C2026-09-21: +1.3°C2026-09-22: +1.1°C2026-09-23: +2.7°C2026-09-24: +8.4°C2026-09-25: +1.1°C2026-09-26: +0.6°C2026-09-27: +3.4°C2026-09-28: +6.0°C2026-09-29: +8.7°C2026-09-30: +3.2°C

Each bar is one day: orange above normal, blue below.

Month by month

MonthHigh / LowRainfallTravel rating
January11° / 6°C151mm⚠️ Challenging
February12° / 6°C124mm⚠️ Challenging
March14° / 8°C119mm🤔 Fair
April15° / 9°C126mm🤔 Fair
May18° / 11°C122mm👍 Good
June20° / 14°C96mm🌟 Great
July22° / 16°C92mm🌟 Great
August23° / 17°C109mm🌟 Great
September21° / 15°C117mm👍 Good
October19° / 13°C155mm👍 Good
November14° / 9°C202mm⚠️ Challenging
December12° / 7°C153mm⚠️ Challenging

San Sebastian Weather in January

⚠️ Challenging time to visit

January in San Sebastian is chilly, with average daytime highs around 11°C (52°F) and nighttime lows near 6°C (43°F). Expect roughly 151mm of precipitation spread over about 14 rainy days, and this is one of the wetter months.

Avg high
11°C
52°F
Avg low
6°C
43°F
Rainfall
151mm
rainy
Rainy days
14
days with ≥1mm

☀️ About 97 hours of sunshine over the month (~3h/day).

🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket

San Sebastian Weather in February

⚠️ Challenging time to visit

February in San Sebastian is chilly, with average daytime highs around 12°C (53°F) and nighttime lows near 6°C (42°F). Expect roughly 124mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.

Avg high
12°C
53°F
Avg low
6°C
42°F
Rainfall
124mm
rainy
Rainy days
12
days with ≥1mm

☀️ About 113 hours of sunshine over the month (~4h/day).

🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket

San Sebastian Weather in March

🤔 Fair time to visit

March in San Sebastian is chilly, with average daytime highs around 14°C (57°F) and nighttime lows near 8°C (46°F). Expect roughly 119mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.

Avg high
14°C
57°F
Avg low
8°C
46°F
Rainfall
119mm
rainy
Rainy days
12
days with ≥1mm

☀️ About 151 hours of sunshine over the month (~5h/day).

🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket

San Sebastian Weather in April

🤔 Fair time to visit

April in San Sebastian is mild, with average daytime highs around 15°C (59°F) and nighttime lows near 9°C (48°F). Expect roughly 126mm of precipitation spread over about 13 rainy days, and this is one of the wetter months.

Avg high
15°C
59°F
Avg low
9°C
48°F
Rainfall
126mm
rainy
Rainy days
13
days with ≥1mm

☀️ About 166 hours of sunshine over the month (~6h/day).

🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket

San Sebastian Weather in May

👍 Good time to visit

May in San Sebastian is mild, with average daytime highs around 18°C (65°F) and nighttime lows near 11°C (53°F). Expect roughly 122mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.

Avg high
18°C
65°F
Avg low
11°C
53°F
Rainfall
122mm
rainy
Rainy days
12
days with ≥1mm

☀️ About 193 hours of sunshine over the month (~6h/day).

🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket

San Sebastian Weather in June

🌟 Great time to visit

June in San Sebastian is pleasantly warm, with average daytime highs around 20°C (69°F) and nighttime lows near 14°C (57°F). Expect roughly 96mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.

Avg high
20°C
69°F
Avg low
14°C
57°F
Rainfall
96mm
moderate
Rainy days
11
days with ≥1mm

☀️ About 194 hours of sunshine over the month (~6h/day).

🎒 What to pack — light layers · comfortable walking shoes

San Sebastian Weather in July

🌟 Great time to visit

July in San Sebastian is pleasantly warm, with average daytime highs around 22°C (71°F) and nighttime lows near 16°C (61°F). Expect roughly 92mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.

Avg high
22°C
71°F
Avg low
16°C
61°F
Rainfall
92mm
moderate
Rainy days
10
days with ≥1mm

☀️ About 206 hours of sunshine over the month (~7h/day).

🎒 What to pack — light layers · comfortable walking shoes

San Sebastian Weather in August

🌟 Great time to visit

August in San Sebastian is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 17°C (62°F). Expect roughly 109mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.

Avg high
23°C
73°F
Avg low
17°C
62°F
Rainfall
109mm
moderate
Rainy days
10
days with ≥1mm

☀️ About 203 hours of sunshine over the month (~7h/day).

🎒 What to pack — light layers · comfortable walking shoes

San Sebastian Weather in September

👍 Good time to visit

September in San Sebastian is pleasantly warm, with average daytime highs around 21°C (70°F) and nighttime lows near 15°C (59°F). Expect roughly 117mm of precipitation spread over about 11 rainy days, and this is one of the wetter months.

Avg high
21°C
70°F
Avg low
15°C
59°F
Rainfall
117mm
rainy
Rainy days
11
days with ≥1mm

☀️ About 185 hours of sunshine over the month (~6h/day).

🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket

San Sebastian Weather in October

👍 Good time to visit

October in San Sebastian is mild, with average daytime highs around 19°C (65°F) and nighttime lows near 13°C (55°F). Expect roughly 155mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.

Avg high
19°C
65°F
Avg low
13°C
55°F
Rainfall
155mm
rainy
Rainy days
12
days with ≥1mm

☀️ About 145 hours of sunshine over the month (~5h/day).

🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket

San Sebastian Weather in November

⚠️ Challenging time to visit

November in San Sebastian is mild, with average daytime highs around 14°C (58°F) and nighttime lows near 9°C (48°F). Expect roughly 202mm of precipitation spread over about 14 rainy days, and heavy rainfall is common — this is peak wet season territory.

Avg high
14°C
58°F
Avg low
9°C
48°F
Rainfall
202mm
very wet
Rainy days
14
days with ≥1mm

☀️ About 101 hours of sunshine over the month (~3h/day).

🎒 What to pack — light jacket · layers for cool evenings · compact umbrella or rain jacket

San Sebastian Weather in December

⚠️ Challenging time to visit

December in San Sebastian is chilly, with average daytime highs around 12°C (54°F) and nighttime lows near 7°C (44°F). Expect roughly 153mm of precipitation spread over about 13 rainy days, and this is one of the wetter months.

Avg high
12°C
54°F
Avg low
7°C
44°F
Rainfall
153mm
rainy
Rainy days
13
days with ≥1mm

☀️ About 94 hours of sunshine over the month (~3h/day).

🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket

FAQ

What is the best time to visit San Sebastian?
Based on 30 years of climate data, the most comfortable months to visit San Sebastian are June, July and August, when daytime temperatures are agreeable and rainfall is relatively low.
What is the hottest month in San Sebastian?
August is typically the hottest month in San Sebastian, with average daytime highs around 23°C.
What is the rainiest month in San Sebastian?
November is usually the wettest month, with around 202mm of precipitation.