Amount of Sunshine Maine Gets Each Month

Share |

Number of Sunny Days

In these tables, the average numbers of Sunny Days for places in Maine 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 Caribou, Maine
  Sunny Partly Sunny Total Days With Sun
January   7     7   14
February   6     6   12
March   7     7   14
April   5     7   12
May   4     9   13
June   3   10   13
July   3   13   16
August   5   11   16
September   5     9   14
October   5     8   13
November   3     6     9
December   6     7   13
Annual 59 100 159
Days with clear skies in Portland, Maine
  Sunny Partly Sunny Total Days With Sun
January   10   7   17
February     9   7   16
March     9   7   16
April     7   7   14
May     6   9   15
June     7 10   17
July     7 11   18
August     9 11   20
September   10   8   18
October   10   8   18
November     7   7   14
December     9   7   16
Annual 101 99 200

Amount of Sun

Here's another way to look at how much sunshine Portland, Maine 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 Portland normally has each month or in a year. These totals are the averages calculated for 1961 to 1990.

Amount of sunshine in Portland, Maine
  % Sun Total Hours
January 56   165
February 59   173
March 56   205
April 54   214
May 54   243
June 59   259
July 63   282
August 63   268
September 62   229
October 58   196
November 48   139
December 53   141
Annual 57 2513
References

National Climatic Data Center. Comparative Climatic Data.

World Data Center for Meteorology. Climate of the World.

Share |

Average Weather

AMERICAN WEATHER

Major USA Cities

States

Extreme USA Weather