Chatham (ON) Weather & Climate: Best Time to Visit

The climate in Chatham is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 1°C (34°F) in the coolest month, January.

Nights vary from 19°C (66°F) in July to around -7°C (19°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Chatham receives mid-range precipitation levels, with 981 mm (39 in) annually. Precipitation levels in Chatham remain relatively steady throughout the year. June has the most rain, with 100 mm (3.9 in) over 10 days. In the driest month February, this drops slightly to 66 mm (2.6 in), making the city's climate fairly predictable. For more details, please visit our Chatham Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Chatham serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.8 hours of sunshine daily, and embrace the darker days in December, offering only 2.7 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is moderate throughout the year in Chatham.

The city experiences its highest humidity in December, reaching 70%. In April, the humidity drops to its lowest level at 52%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year