August Weather in Washington

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%.

7°C (46°F)

Minimum temperature

19°C (67°F)

Average temperature

31°C (87°F)

Maximum temperature

64%

Humidity

Precipitation and Sunshine hours

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.

98 mm (3.9 inches)

Precipitation

13 rainy days

Rainy days

10 hours 46 minutes

Sunshine hours

30%

Chance of sun

UV Index

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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

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