Amount of Sunshine Massachusetts Gets Each Month





Number of Sunny Days

In these tables, the average numbers of Sunny Days for places in Massachusetts are the total days each month or year when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.

Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime.

Total Days With Sun is a sum of the Sunny plus Partly Sunny days. The rest of the days are mainly overcast, with at least 80% cloud cover. All the numbers are averages, made from years of weather watching

Days with clear skies in Boston, Massachusetts
  Sunny Partly Sunny Total Days With Sun
January 9 7 16
February 8 7 15
March 8 8 16
April 7 8 15
May 6 10 16
June 7 10 17
July 7 12 19
August 9 11 20
September 10 8 18
October 11 8 19
November 8 7 15
December 9 7 16
Annual 98 103 201
Days with clear skies in Worcester, Massachusetts
  Sunny Partly Sunny Total Days With Sun
January 9 8 17
February 8 7 15
March 8 8 16
April 7 9 16
May 6 10 16
June 6 11 17
July 6 12 18
August 8 11 19
September 9 9 18
October 10 8 18
November 7 8 15
December 8 8 16
Annual 90 107 197

Amount of Sun

Here's another way to look at how much sunshine Massachusetts normally gets. The % Sun numbers measure the percentage of time between sunrise and sunset that sunshine reaches the ground. Again, these amounts are averages based on decades of weather observations.

The Total Hours figures are the average number of sunny hours that Boston, Massachusetts normally has each month or in a year. These totals are the averages calculated for 1961 to 1990.

Amount of sunshine in Boston, Massachusetts
  % Sun Total Hours
January 53 163
February 56 168
March 57 214
April 56 227
May 58 267
June 63 287
July 65 301
August 65 277
September 63 237
October 60 206
November 50 143
December 52 142
Annual 58 2634
References

National Climatic Data Center. Comparative Climatic Data.

World Data Center for Meteorology. Climate of the World.

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