Dover (NH) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dover.
Climate overview of Dover
The climate in Dover, New Hampshire, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in July to 1°C (34°F) in January.
The city receives considerable rain/snowfall, with around 1221 mm (48 in) annually. June is the wettest month. Sunshine peaks in July, when the city sees around 9.8 hours of sunshine per day.
Dover Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dover — and find the best time to visit.
Monthly Temperature in Dover
In Dover, temperatures differ significantly between summer and winter months. 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 16°C (61°F) in July to around -9°C (16°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dover
Dover experiences significant rain/snowfall throughout the year, averaging 1221 mm (48 in) of precipitation annually. Dover offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month June (127 mm (5 in)) and the driest month January (72 mm (2.8 in)) is not too significant. For more details, please visit our Dover Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Dover
For those who appreciate different seasons, Dover 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 November, offering only 4.2 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Dover by Month
The relative humidity is high throughout the year in Dover.
The city experiences its highest humidity in September, reaching 76%. In April, 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
Best Time to Visit Dover
Frequently asked questions about the climate in Dover
What is the best time to visit Dover?
September typically offers the most optimal weather in Dover. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Dover?
Daytime highs range from 1°C (34°F) in January to 28°C (82°F) in July. Nighttime lows range from -9°C (16°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Dover get?
Annual rainfall is around 1221 mm (48 in). June is the wettest month with 127 mm (5 in), while January is the driest with 72 mm (2.8 in).
How sunny is Dover?
Dover receives around 2,512 hours of sunshine per year. July is the sunniest month with 295 hours, while November is the cloudiest with just 127 hours. Overall, Dover enjoys abundant sunshine.
Dover 3-Day Forecast
Dover (NH) 3-Day Forecast
Dover on the map
Dover is highlighted — select any city to see its climate.
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