August Weather in Greenwich

Last updated: March 2, 2024

The weather in Greenwich, United States, during August is characterized by an average temperature of 24°C (75°F). Highs can soar to 32°C (90°F), while lows may dip to 16°C (62°F). Typically, the humidity level in Greenwich throughout August hovers around 65%.

16°C (62°F)

Minimum temperature

24°C (75°F)

Average temperature

32°C (90°F)

Maximum temperature

65%

Humidity

Precipitation and Sunshine hours

In August, Greenwich averages 123 mm (4.8 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 13 hours 43 minutes of daylight, with the sun shining for approximately 10 hours 9 minutes each day. Additionally, there is a 29% probability of sunny days during this period.

123 mm (4.8 inches)

Precipitation

14 rainy days

Rainy days

10 hours 9 minutes

Sunshine hours

29%

Chance of sun

UV Index

In August, the UV Index in Greenwich 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 7 5 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

Compare Greenwich's Climate with Cities Worldwide