Last updated: March 2, 2024
The weather in Washington, United States, during August is characterized by an average temperature of 26°C (79°F). Highs can soar to 34°C (94°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Washington throughout August hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In August, Washington averages 182 mm (7.2 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 13 hours 25 minutes of daylight, with the sun shining for approximately 10 hours 10 minutes each day. Additionally, there is a 43% probability of sunny days during this period.
Precipitation
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Chance of sun
In August, the UV Index in Washington 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 | 1 | 3 | 5 | 7 | 9 | 10 | 10 | 8 | 6 | 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 | ||||||