Massachusetts climate guide

Temperature in Massachusetts (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
1°C maximum daytime temperature in January in Massachusetts (Boston)1
3°C maximum daytime temperature in February in Massachusetts (Boston)3
8°C maximum daytime temperature in March in Massachusetts (Boston)8
14°C maximum daytime temperature in April in Massachusetts (Boston)14
20°C maximum daytime temperature in May in Massachusetts (Boston)20
25°C maximum daytime temperature in June in Massachusetts (Boston)25
28°C maximum daytime temperature in July in Massachusetts (Boston)28
27°C maximum daytime temperature in August in Massachusetts (Boston)27
23°C maximum daytime temperature in September in Massachusetts (Boston)23
17°C maximum daytime temperature in October in Massachusetts (Boston)17
11°C maximum daytime temperature in November in Massachusetts (Boston)11
4°C maximum daytime temperature in December in Massachusetts (Boston)4
Min temperature (night-time)
-8°C minimum night-time temperature in January in Massachusetts (Boston)-8
-7°C minimum night-time temperature in February in Massachusetts (Boston)-7
-2°C minimum night-time temperature in March in Massachusetts (Boston)-2
3°C minimum night-time temperature in April in Massachusetts (Boston)3
9°C minimum night-time temperature in May in Massachusetts (Boston)9
14°C minimum night-time temperature in June in Massachusetts (Boston)14
17°C minimum night-time temperature in July in Massachusetts (Boston)17
16°C minimum night-time temperature in August in Massachusetts (Boston)16
12°C minimum night-time temperature in September in Massachusetts (Boston)12
6°C minimum night-time temperature in October in Massachusetts (Boston)6
2°C minimum night-time temperature in November in Massachusetts (Boston)2
-5°C minimum night-time temperature in December in Massachusetts (Boston)-5
Sea temperature
4°C sea temperature in January in Massachusetts (Boston)4
3°C sea temperature in February in Massachusetts (Boston)3
3°C sea temperature in March in Massachusetts (Boston)3
5°C sea temperature in April in Massachusetts (Boston)5
9°C sea temperature in May in Massachusetts (Boston)9
14°C sea temperature in June in Massachusetts (Boston)14
18°C sea temperature in July in Massachusetts (Boston)18
18°C sea temperature in August in Massachusetts (Boston)18
16°C sea temperature in September in Massachusetts (Boston)16
13°C sea temperature in October in Massachusetts (Boston)13
9°C sea temperature in November in Massachusetts (Boston)9
7°C sea temperature in December in Massachusetts (Boston)7

Sunshine & Daylight in Massachusetts

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Massachusetts (Boston)9
11 hours of daylight per day in February in Massachusetts (Boston)11
12 hours of daylight per day in March in Massachusetts (Boston)12
13 hours of daylight per day in April in Massachusetts (Boston)13
15 hours of daylight per day in May in Massachusetts (Boston)15
15 hours of daylight per day in June in Massachusetts (Boston)15
15 hours of daylight per day in July in Massachusetts (Boston)15
14 hours of daylight per day in August in Massachusetts (Boston)14
12 hours of daylight per day in September in Massachusetts (Boston)12
11 hours of daylight per day in October in Massachusetts (Boston)11
10 hours of daylight per day in November in Massachusetts (Boston)10
9 hours of daylight per day in December in Massachusetts (Boston)9

Rainfall in Massachusetts

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Massachusetts (Boston)11
10 days with some rainfall in February in Massachusetts (Boston)10
11 days with some rainfall in March in Massachusetts (Boston)11
11 days with some rainfall in April in Massachusetts (Boston)11
11 days with some rainfall in May in Massachusetts (Boston)11
11 days with some rainfall in June in Massachusetts (Boston)11
9 days with some rainfall in July in Massachusetts (Boston)9
10 days with some rainfall in August in Massachusetts (Boston)10
8 days with some rainfall in September in Massachusetts (Boston)8
9 days with some rainfall in October in Massachusetts (Boston)9
11 days with some rainfall in November in Massachusetts (Boston)11
12 days with some rainfall in December in Massachusetts (Boston)12
Average monthly rainfall (mm)
93 mm monthly rainfall in January in Massachusetts (Boston)93
93 mm monthly rainfall in February in Massachusetts (Boston)93
97 mm monthly rainfall in March in Massachusetts (Boston)97
93 mm monthly rainfall in April in Massachusetts (Boston)93
85 mm monthly rainfall in May in Massachusetts (Boston)85
80 mm monthly rainfall in June in Massachusetts (Boston)80
75 mm monthly rainfall in July in Massachusetts (Boston)75
85 mm monthly rainfall in August in Massachusetts (Boston)85
82 mm monthly rainfall in September in Massachusetts (Boston)82
87 mm monthly rainfall in October in Massachusetts (Boston)87
111 mm monthly rainfall in November in Massachusetts (Boston)111
105 mm monthly rainfall in December in Massachusetts (Boston)105

More climate for Massachusetts

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Massachusetts (Boston)1
UV (maximum) index 2 (Low) in February in Massachusetts (Boston)2
UV (maximum) index 4 (Moderate) in March in Massachusetts (Boston)4
UV (maximum) index 5 (Moderate) in April in Massachusetts (Boston)5
UV (maximum) index 7 (High) in May in Massachusetts (Boston)7
UV (maximum) index 8 (Very High) in June in Massachusetts (Boston)8
UV (maximum) index 8 (Very High) in July in Massachusetts (Boston)8
UV (maximum) index 8 (Very High) in August in Massachusetts (Boston)8
UV (maximum) index 6 (High) in September in Massachusetts (Boston)6
UV (maximum) index 4 (Moderate) in October in Massachusetts (Boston)4
UV (maximum) index 2 (Low) in November in Massachusetts (Boston)2
UV (maximum) index 1 (Low) in December in Massachusetts (Boston)1
Heat & Humidity
No heat & humidity in January in Massachusetts (Boston)0
No heat & humidity in February in Massachusetts (Boston)0
No heat & humidity in March in Massachusetts (Boston)0
No heat & humidity in April in Massachusetts (Boston)0
No heat & humidity in May in Massachusetts (Boston)0
Low heat & humidity in June in Massachusetts (Boston)L
Moderate heat & humidity in July in Massachusetts (Boston)M
Low heat & humidity in August in Massachusetts (Boston)L
No heat & humidity in September in Massachusetts (Boston)0
No heat & humidity in October in Massachusetts (Boston)0
No heat & humidity in November in Massachusetts (Boston)0
No heat & humidity in December in Massachusetts (Boston)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Going to Massachusetts? Find the best month to visit Massachusetts based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check climate guides for Massachusetts showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Boston.

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More about Massachusetts

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for Massachusetts, represented by Boston, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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