Dartmouth (NS) Weather & Climate: Best Time to Visit

The climate in Dartmouth is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 24°C (75°F) in August to a very cold 1°C (34°F) in the coolest month, January.

Nights vary from 15°C (59°F) in August to around -8°C (18°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Dartmouth has a notably wet climate with abundant precipitation, recording 1363 mm (54 in) of rain/snowfall per year. Precipitation levels in Dartmouth remain relatively steady throughout the year. December has the most snow/rain, with 142 mm (5.6 in) over 15 days. In the driest month May, this drops slightly to 90 mm (3.5 in), making the city's climate fairly predictable. For more details, please visit our Dartmouth 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, Dartmouth serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.8 hours of sunshine daily, and embrace the darker days in November, offering only 3.5 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Dartmouth.

The city experiences its highest humidity in December, reaching 76%. In May, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year