Last updated: March 2, 2024
The weather in San Diego, United States, during May is characterized by an average temperature of 27°C (81°F). Highs can soar to 37°C (99°F), while lows may dip to 16°C (61°F). Typically, the humidity level in San Diego throughout May hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, San Diego averages 99 mm (3.9 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 13 hours 31 minutes of daylight, with the sun shining for approximately 9 hours 46 minutes each day. Additionally, there is a 43% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in San Diego reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 1 | 3 | 5 | 8 | 10 | 12 | 11 | 10 | 7 | 4 | 2 | 1 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||