Chatham Weather in October

The climate in Chatham during October can be summarized as mild and a little damp.

October is in the fall / autumn in Chatham and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 7°C (45°F) is normal.

On average October is the 6th driest month of the year in Chatham with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.5 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Chatham in October 2025.