August Weather in Charlestown

Last updated: March 2, 2024

The weather in Charlestown, United States, during August is characterized by an average temperature of 25°C (78°F). Highs can soar to 33°C (91°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Charlestown throughout August hovers around 72%.

18°C (64°F)

Minimum temperature

25°C (78°F)

Average temperature

33°C (91°F)

Maximum temperature

72%

Humidity

Precipitation and Sunshine hours

In August, Charlestown averages 133 mm (5.2 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 13 hours 38 minutes of daylight, with the sun shining for approximately 10 hours 18 minutes each day. Additionally, there is a 34% probability of sunny days during this period.

133 mm (5.2 inches)

Precipitation

14 rainy days

Rainy days

10 hours 18 minutes

Sunshine hours

34%

Chance of sun

UV Index

In August, the UV Index in Charlestown reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 1 3 5 7 9 9 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

Compare Charlestown's Climate with Cities Worldwide