Spain
San Sebastian in July: weather, sea & travel advice
This month's data profile
Strong month under the current formula
San Sebastian in July is climatically well suited to city breaks, active holidays and hiking, beach holidays and family holidays. The average daily high is around 23 °C, and the sea is about 21 °C. With about 10 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
80/100 · #2
Warmth
#2
Dryness
#1
Sun
#1
Sea warmth
#2
Published best categories: Overall, Beach, City break, Active, Family
San Sebastian · JulyPhoto: Ander.gd · CC BY-SA 4.0Climate facts
- Average high
- 23 °C
- Average low
- 18 °C
- Sea
- 21 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 79 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| June | 21 | 16 | 11 | 71 | 7.4 | 81 | 2.5 | 19 | 69 |
| July (selected) | 23 | 18 | 10 | 49 | 7.4 | 79 | 2.5 | 21 | 80 |
| August | 24 | 19 | 10 | 55 | 6.6 | 77 | 2.5 | 22 | 83 |
How do the previous and next months compare?
Baseline: July (80/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| June | -11 | -2.1 °C | -2 °C | +1.7 | +22.4 mm | ±0 h | +1.2 % | ±0 m/s | -2.2 °C |
| August | +3 | +1 °C | +0.8 °C | +0.1 | +6.1 mm | -0.8 h | -2.3 % | ±0 m/s | +1 °C |
All twelve months in context
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Where to stay in San Sebastian
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Frequently asked questions
How warm is San Sebastian in July?
The average daily high is around 23 °C, with an average daily low of about 18 °C.
Can you swim in San Sebastian in July?
The sea is about 21 °C (swimmable).
Does it rain a lot in San Sebastian in July?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 49 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. July is one of them.