Annual average weather for Massachusetts, United States

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Annual Average Weather for Massachusetts, United States

The annual average maximum daily temperature is 14.6°C (58.3°F) which is a little too chilly for sunbathing. The annual average water temperature is typically 12.4°C (54.3°F) which is very cold and bracing, it's not recommended you swim with out a full wet suit. Annually there are on average 13.8 days of rain per month and 5.8 hours of sun per day.

When is the best time to visit Massachusetts?

The best months to visit Massachusetts are June, July, August, September, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The weather is warm enough for sunbathing in the months from June to September when the maximum temperature reaches above 22°C (72°F)

The sea is best for swimming between June and October when the sea temperature is above the average 12°C (54°F) which is very cold and bracing, it's not recommended you swim with out a full wet suit.

Can you sunbathe in Massachusetts year round?

No, you can't sunbathe in Massachusetts all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.

The weather is warm enough for sunbathing in the months from June to September when the maximum temperature reaches above 22°C (72°F)

More info about the annual temperatures and sunshine.

Can you swim in Massachusetts year round?

No, you can't swim in Massachusetts all year round.

The warmest sea water temperatures in Massachusetts are found in August when they peak at 22°C (72°F) and lowest in January when they dip to 4°C (40°F).

The sea temperature is above average for swimming between June and October when the sea temperature is above 12°C (54°F) which is very cold and bracing, it's not recommended you swim with out a full wet suit.

The sea is good for swimming in the months from July to September when the sea temperature is above 19°C (66°F)

More info about the annual sea temperatures

When is the hottest month in Massachusetts?

The hottest month in Massachusetts is July when the average maximum temperature is very warm and perfect for sunbathing on clear days 26°C (79°F), average temperature is 22°C (71°F) and average minimum temperature is 18°C (65°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Massachusetts?

The coolest month in Massachusetts is January when the average maximum temperature is 3°C (38°F), average temperature is -0°C (31°F) and average minimum temperature is -4°C (25°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Massachusetts?

The sunniest days in Massachusetts are in May which has the most hours of sunshine per day. In May the sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 6.5 hours of sunshine per day.

More info about the annual sunshine.

When is the least sunny month in Massachusetts?

December has the least sunshine. In December the sunshine percentage is 35.7% making it very cloudy and overcast with some periods of sunshine. There are 4.8 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Massachusetts?

The driest month in Massachusetts is August with 7.2cm (2.8inches) of rain and February has the fewest days of rain with 12.2 days with some rain, a pretty wet time to visit the beach.

More info about the annual rainfall

When is the wettest month in Massachusetts?

The wettest month in Massachusetts is April with 12.8cm (5.0inches) of rain and December has the most days of rain with 15.8 days with some rain, a wet time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Massachusetts?

The coldest sea water temperatures in Massachusetts are found in January when they dip to 4°C (40°F) which is extremely cold and not suitable for swimming. Taking a dip at this temperature would risk hypothermia.

More info about the annual sea temperatures.

When is the sea the warmest in Massachusetts?

The warmest sea water temperatures in Massachusetts are found in August when they peak at 22°C (72°F) which is warm and pleasant for relaxing and swimming for long periods.

More info about the annual sea temperatures.

When is the most humid month in Massachusetts?

The most humid month in Massachusetts is July with a dew point (an indicator of humidity) of 20°C (68°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

More info about the annual humidity.

When is the least humid month in Massachusetts?

The least humid month in Massachusetts is February with a dew point of -1°C (30°F) which is a bit dry for some.

More info about the annual humidity.

When is the windiest month in Massachusetts?

The most windy month in Massachusetts is February when the average maximum windspeed is 27KM/H (17MPH) and the average wind speed is 15KM/H (9MPH).

More info about the annual wind conditions.

Annual Temperature for Massachusetts

The hottest month in Massachusetts is July when the average maximum temperature is 26°C (79°F), average temperature is 22°C (71°F) and average minimum temperature is 18°C (65°F).

The coolest month in Massachusetts is January when the average maximum temperature is 3°C (3°F), average temperature is -0°C (31°F) and average minimum temperature is -4°C (25°F).

Annual Sunshine for Massachusetts

The longest days in Massachusetts are in June, with an average of 15.2 hours of daylight per day. December has the shortest days with an average of 9.1 hours of daylight per day.

The sunniest days in Massachusetts are in May which has the most hours of sunshine per day. The sunshine percentage is 57% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 6.5 hours of sunshine per day.

December has the least sunshine. The sunshine percentage is 35.7% making it very cloudy and overcast with some periods of sunshine. There are 4.8 hours of sunshine per day.

The ultraviolet index is the highest in July when it reaches 9.4 and lowest in December when it reaches 1.4.

An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Massachusetts

The warmest sea water temperatures in Massachusetts are found in August when they peak at 22°C (72°F) and lowest in January when they dip to 4°C (40°F).

The sea is best for swimming between June and October when the temperature is above 12°C (54°F) which is very cold and bracing, it's not recommended you swim with out a full wet suit.

Annual Rainfall for Massachusetts

The wettest month in Massachusetts is April with 12.8cm (5.0inches) of rain and December has the most days of rain with 15.8 days with some rain, a wet time to visit the beach.

The driest month in Massachusetts is August with 7.2cm (2.8inches) of rain and February has the fewest days of rain with 12.2 days with some rain, a pretty wet time to visit the beach.

Annual Humidity for Massachusetts

The most humid month in Massachusetts is July with a dew point (an indicator of humidity) of 20°C (68°F) which is somewhat uncomfortable for most people in cities but fine on a beach.

The least humid month in Massachusetts is February with a dew point of -1°C (30°F) which is a bit dry for some.

Annual Wind Speed for Massachusetts

The most windy month in Massachusetts is February when the average maximum windspeed is 27KM/H (17MPH) and the average wind speed is 15KM/H (9MPH).

The least windy month in Massachusetts is August when the average maximum windspeed is 20KM/H (13MPH) and the average wind speed is 10KM/H (6MPH).

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