Spain
San Sebastian in October: weather, sea & travel advice
This month's data profile
Rain shapes the decision
San Sebastian in October is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 19 °C, and the sea is about 18 °C. With about 13 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
56/100 · #5
Warmth
#5
Dryness
#7
Sun
#8
Sea warmth
#5
Published best categories: none
San Sebastian · OctoberPhoto: Ander.gd · CC BY-SA 4.0Climate facts
- Average high
- 19 °C
- Average low
- 14 °C
- Sea
- 18 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 78 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| September | 22 | 17 | 12 | 84 | 5.3 | 76 | 2.7 | 21 | 72 |
| October (selected) | 19 | 14 | 13 | 102 | 3.4 | 78 | 3.0 | 18 | 56 |
| November | 14 | 11 | 16 | 149 | 2.1 | 81 | 3.6 | 16 | 33 |
How do the previous and next months compare?
Baseline: October (56/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| September | +16 | +2.9 °C | +2.6 °C | -0.9 | -17.8 mm | +1.9 h | -1.6 % | -0.3 m/s | +2.5 °C |
| November | -23 | -4.5 °C | -3.6 °C | +2.7 | +47.2 mm | -1.3 h | +3 % | +0.6 m/s | -2.5 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is San Sebastian in October?
The average daily high is around 19 °C, with an average daily low of about 14 °C.
Can you swim in San Sebastian in October?
The sea is about 18 °C (refreshing).
Does it rain a lot in San Sebastian in October?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 102 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit San Sebastian?
By the climate score, June, July, August and September are the strongest months for San Sebastian. For a beach trip: June, July, August and September. October is not among them.