Last updated: March 2, 2024
The weather in California, United States, during May is characterized by an average temperature of 19°C (66°F). Highs can soar to 28°C (83°F), while lows may dip to 9°C (49°F). Typically, the humidity level in California throughout May hovers around 78%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, California averages 119 mm (4.7 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 14 hours 14 minutes of daylight, with the sun shining for approximately 10 hours 4 minutes each day. Additionally, there is a 44% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in California reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 | 2 | 4 | 6 | 8 | 10 | 10 | 9 | 7 | 5 | 3 | 2 | 1 |
| 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 | ||||||