Last updated: March 2, 2024
The weather in Pasadena, United States, during May is characterized by an average temperature of 18°C (65°F). Highs can soar to 29°C (85°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Pasadena throughout May hovers around 78%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Pasadena averages 138 mm (5.4 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 14 hours 19 minutes of daylight, with the sun shining for approximately 9 hours 34 minutes each day. Additionally, there is a 41% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Pasadena reaches a maximum of 10, 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 | 2 | 3 | 6 | 8 | 9 | 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 | ||||||