Last updated: March 2, 2024
The weather in San Sebastian, Spain, during May is characterized by an average temperature of 14°C (58°F). Highs can soar to 24°C (76°F), while lows may dip to 7°C (45°F). Typically, the humidity level in San Sebastian throughout May hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, San Sebastian averages 120 mm (4.7 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 14 hours 41 minutes of daylight, with the sun shining for approximately 11 hours 55 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in San Sebastian reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||