Last updated: March 2, 2024
The weather in Bethesda, United States, during May is characterized by an average temperature of 17°C (63°F). Highs can soar to 30°C (86°F), while lows may dip to 3°C (37°F). Typically, the humidity level in Bethesda throughout May hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In May, Bethesda averages 141 mm (5.6 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 14 hours 24 minutes of daylight, with the sun shining for approximately 8 hours 39 minutes each day. Additionally, there is a 31% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In May, the UV Index in Bethesda 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 | 5 | 7 | 9 | 10 | 10 | 8 | 6 | 4 | 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 | ||||||