Devon's mild climate makes Dartmouth an all year round resort and a popular destination anytime of the year. Dartmouth's warmest and sunniest months are from May to September, though many tourists like to visit at Christmas and stay for the New Year celebrations.
Dartmouth Weather.
Temperatures in Dartmouth range from 4.0 to 20.55 (Celcius).
Temperature
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Rainfall in Dartmouth varies from 171.0 to 465.0 (mm/month).