Climate in Southwest Harbor (Maine), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Southwest Harbor, the United States of America

Feel free to add this climate graph to your website. Click the copy button above.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Southwest Harbor, the United States of America

Feel free to add this climate graph to your website. Click the copy button above.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Southwest Harbor, the United States of America

Feel free to add this climate graph to your website. Click the copy button above.

Weather Forecasts for Southwest Harbor (ME)

Thu   Mar 28
8°C | 4°C
N 14 km/h
22 mm
overcast and heavy rain

overcast and heavy rain

Fri   Mar 29
7°C | 3°C
N 40 km/h
20 mm
overcast and heavy rain

overcast and heavy rain

Sat   Mar 30
6°C | 0°C
NW 36 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit Southwest Harbor in the United States of America

During the months of July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which is the warmest month in Southwest Harbor?
    July has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Southwest Harbor?
    The coldest month is February with an average maximum temperature of -0°C.
  • Which is the wettest month in Southwest Harbor?
    October tops the wettest month list with 145 mm of rainfall.
  • Which is the driest month in Southwest Harbor?
    August is the driest month with 85 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.