September Weather in Chatham

Last updated: March 2, 2024

The weather in Chatham, Canada, during September is characterized by an average temperature of 19°C (66°F). Highs can soar to 30°C (86°F), while lows may dip to 7°C (45°F). Typically, the humidity level in Chatham throughout September hovers around 81%.

7°C (45°F)

Minimum temperature

19°C (66°F)

Average temperature

30°C (86°F)

Maximum temperature

81%

Humidity

Precipitation and Sunshine hours

In September, Chatham averages 76 mm (3.0 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 25 minutes of daylight, with the sun shining for approximately 9 hours 58 minutes each day. Additionally, there is a 53% probability of sunny days during this period.

76 mm (3.0 inches)

Precipitation

10 rainy days

Rainy days

9 hours 58 minutes

Sunshine hours

53%

Chance of sun

UV Index

In September, the UV Index in Chatham reaches a maximum of 8, 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 1 2 3 5 7 8 7 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

Compare Chatham's Climate with Cities Worldwide