San Sebastián · SpringMonth summary
San Sebastián weather in May
✅ Good
🌡️ Temperature min / max
12°C – 18°C
🌧 Rainy days
52% of days
☀️ Sunshine
11.6h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
7.0/10
📅 📅 Best month
July (7.8/10)
Quick decision
Should you visit San Sebastián in May?
✅ Good
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: San Sebastián in May: 18°C and 11.6h of sunshine. Decent, but not the peak.
By trip type
San Sebastián in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in May
🎯 Quiet uncrowded beaches — ideal for coastal walks Spring marks the start of the good season in San Sebastián. Temperatures rise (18°C) and tourists have not yet arrived en masse. With 52% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. July (7.8/10) is significantly better if possible.
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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 May, San Sebastián averages 18°C, 52% rainy days and 11.6h of sunshine per day. Overall weather score: 7.0/10.
See methodology →
Comparison
May vs July (best month)
The best month is July (score 7.8/10). Difference:
- 🌡️ Max temperature : +5°C
- 🌧 Rainy days : -12%
- ☀️ Sunshine : +0.6h/day
FAQ
FAQ — San Sebastián in May
Is May a good time to visit San Sebastián?
May is an acceptable time for San Sebastián (score 7.0/10). Conditions are decent but not optimal — consider July (7.8/10) if possible.
Does it rain a lot in San Sebastián in May?
Yes, 52% of days see rain in May. Plan some indoor activities as backup.
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