San Sebastián · SummerMonth summary
San Sebastián weather in August
✅ Good
🌡️ Temperature min / max
18°C – 24°C
🌧 Rainy days
40% of days
☀️ Sunshine
11.8h per day on average
🌊 🌊 Season
Summer
⭐ ⭐ Weather score
7.8/10
📅 📅 Best month
July (7.8/10)
Quick decision
Should you visit San Sebastián in August?
✅ Good
✅ Yes if: you want to explore cultural sites and local food.
❌ No if: you need guaranteed sunshine for photos or outdoor activities.
Our take: San Sebastián in August: 24°C and 11.8h of sunshine. Decent, but not the peak.
By trip type
San Sebastián in August by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ⚠️ Possible
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in August
🎯 Ideal beach temperature (25°C) — crowds still moderate Summer in San Sebastián brings pleasant temperatures (24°C) and long sunny days (11.8h of sunshine). Expect rain on 40% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (7.8/10) remains theoretically better.
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All months for San Sebastián
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 6°C | 12°C | 52% | 6.6 | 5.9h | 4.0/10 |
| 🌦️ February | 7°C | 14°C | 49% | 5.3 | 7.8h | 4.4/10 |
| 🌦️ March | 8°C | 15°C | 55% | 5.0 | 8.9h | 4.7/10 |
| 🌦️ April | 9°C | 17°C | 49% | 4.1 | 10.1h | 6.9/10 |
| 🌦️ May | 12°C | 18°C | 52% | 4.1 | 11.6h | 7.0/10 |
| 🌦️ June | 15°C | 21°C | 47% | 3.6 | 11.8h | 7.3/10 |
| 🌤️ July | 17°C | 23°C | 40% | 2.4 | 12.2h | 7.8/10 |
| 🌤️ August | 18°C | 24°C | 40% | 3.2 | 11.8h | 7.8/10 |
| 🌤️ September | 16°C | 22°C | 44% | 4.2 | 10.6h | 7.4/10 |
| 🌦️ October | 13°C | 20°C | 43% | 4.5 | 8.9h | 7.1/10 |
| 🌦️ November | 10°C | 15°C | 58% | 7.7 | 6.9h | 4.2/10 |
| 🌦️ December | 8°C | 14°C | 49% | 6.1 | 5.7h | 4.1/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In August, San Sebastián averages 24°C, 40% rainy days and 11.8h of sunshine per day. Overall weather score: 7.8/10.
See methodology →
Comparison
August vs July (best month)
The best month is July (score 7.8/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +0.4h/day
FAQ
FAQ — San Sebastián in August
Is August a good time to visit San Sebastián?
August is an excellent time to visit San Sebastián (score 7.8/10). With 24°C, 11.8h of sunshine and 40% rain, conditions are very favourable.
What to do in San Sebastián in August?
With 24°C max and 11.8h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in San Sebastián
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