Boston
1 to 27°C
temperature
2645 hours
sunshine per day
580 mm
rain
199 days
dry
136 days
rain
30 days
snow

Climate of Boston

Boston has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Boston is 14° degrees and there is about 581 mm of rain in a year. It is dry for 192 days a year with an average humidity of 75% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 1°C and 27°C
  • Night:the average nighttime temperature is between -6°C and 18°C
  • Sea temperature: the sea temperature is between 4°C and 31°C
  • Rain: it rains 136 days and there is a total of approximately 580 mm rainfall
  • Snow: it snows an average of 30 days per year
  • Sun hours: throughout the year there are 2645 sun hours
Maximum temperature: between 1°C and 27°C
Warmest month: 27°C in July
Coldest month: 1°C in January
Night temperature: between -6°C and 18°C
Sea temperature: between 4°C and 31°C
Dry days: 199 days
Days with rain: 136 days
Days with snow: 30 days
Total rain sum: 580 mm
Hours of sunshine: 2645 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Boston.

Precipitation graph

This graph shows the average amount of rainfall per month for Boston.

Climate table of Boston

In this climate table you can see at a glance what the average weather per month is for Boston. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Boston might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 1 2 6 13 19 23 27 27 23 16 10 5
Night temp. (°C) -6 -5 -1 5 10 14 18 17 14 9 3 -1
Water temp. (°C) 5 9 4 13 28 24 31 28 18 21 9 6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 59 54 67 49 34 45 38 34 28 57 61 54
Days with rain 8 8 11 14 14 13 14 11 10 13 10 10
Days with snow 8 8 7 1 - - - - - - 1 5
Dry days 15 12 13 15 17 17 17 20 20 18 19 16
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 5 5 6 9 9 9 10 11 8 6 5 5
Wind force (Bft) 3 3 3 3 3 2 2 2 2 3 3 3
UV-index 2 2 2 3 5 6 6 6 4 3 2 2

Best time to visit Boston

The best time to visit Boston in the state of Massachusetts is from May through September. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Boston is 27°C in July and the lowest is 1°C in January. The water temperature is 31°C at its highest and in other months it can be 4°C.

Climate of Boston by month

What is the average climate in a given month for Boston? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Boston weather experiences

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