Last updated: March 2, 2024
The weather in Washington, United States, during August is characterized by an average temperature of 19°C (67°F). Highs can soar to 31°C (87°F), while lows may dip to 7°C (46°F). Typically, the humidity level in Washington throughout August hovers around 64%.
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Average temperature
Maximum temperature
Humidity
In August, Washington averages 98 mm (3.9 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 13 hours 54 minutes of daylight, with the sun shining for approximately 10 hours 46 minutes each day. Additionally, there is a 30% 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 9, 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 | 8 | 9 | 8 | 6 | 4 | 3 | 1 | 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 | ||||||