Weymouth (MA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Weymouth.
Climate overview of Weymouth
Weymouth, Massachusetts, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in July, while winters cool to 3°C (37°F) in January.
With around 1313 mm (52 in) of annual rain/snowfall, Weymouth has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and cold winters. The wettest month is December. The most sunshine falls in May, with an average of 10.0 hours of daily sunshine.
Weymouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Weymouth - and find the best time to visit.
Monthly Temperature in Weymouth
Depending on the time of the year, temperatures range from comfortable to chilly in Weymouth. Average daytime temperatures reach a comfortable 29°C (84°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 18°C (64°F) in July to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Weymouth
Weymouth has a relatively rain/snowy climate with high precipitation levels, averaging 1313 mm (52 in) of rain/snowfall annually. Weymouth experiences moderate seasonal variation in snow/rainfall, with monthly averages ranging from 138 mm (5.4 in) in December, the wettest month, and 81 mm (3.2 in) in September, the driest month. For more details, please visit our Weymouth 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 Weymouth
Weymouth can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Weymouth
The mean water temperature over the year ranges from 4°C (39°F) in February to 20°C (68°F) in August.
Water temperature over the year
Humidity in Weymouth by Month
The relative humidity is high throughout the year in Weymouth.
The city experiences its highest humidity in August, reaching 72%. In February, 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
Wind Speed in Weymouth
The mean wind speed varies between 5 m/s (10 knots) and 7 m/s (14 knots) throughout the year. It is lowest in June, July, August and September and highest during January, February, March and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Weymouth
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July, August and September
- Warmest weather: July and August
- Most sunshine: May and July
- Fewest rainy days: February, August, September and November
- Best for swimming: August, with water temperatures around 20°C (68°F).
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Weymouth
What is the best time to visit Weymouth?
May, July, August and September typically offer the most optimal weather in Weymouth. In contrast, January, February, March, November and December tend to have less optimal conditions. Weymouth has warm summers and cold winters.
What temperatures can I expect in Weymouth?
Daytime highs range from 3°C (37°F) in January to 29°C (84°F) in July. Nighttime lows range from -6°C (21°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Weymouth get?
Annual rainfall is around 1313 mm (52 in). December is the wettest month with 138 mm (5.4 in), while September is the driest with 81 mm (3.2 in). In the coldest months, precipitation may fall as snow/rain.
How sunny is Weymouth?
Weymouth receives around 2,665 hours of sunshine per year. May is the sunniest month with 301 hours, while December is the cloudiest with just 141 hours. Overall, Weymouth enjoys abundant sunshine.
Weymouth 3-Day Forecast
Weymouth (MA) 3-Day Forecast
Weymouth on the map
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