Last updated: March 2, 2024
The weather in San Sebastian, Puerto Rico, during May is characterized by an average temperature of 26°C (79°F). Highs can soar to 30°C (87°F), while lows may dip to 22°C (72°F). Typically, the humidity level in San Sebastian throughout May hovers around 75%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, San Sebastian averages 95 mm (3.7 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 12 hours 59 minutes of daylight, with the sun shining for approximately 11 hours 38 minutes each day. Additionally, there is a 53% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in San Sebastian reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 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 | 3 | 5 | 9 | 12 | 14 | 13 | 11 | 7 | 4 | 2 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 25 min | 30 min | 45 min | ||||||