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Dennis Port (MA) Weather and Climate: A Comprehensive Guide

The climate in Dennis Port is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to cold in the cooler months. It also has a notably wet climate with much precipitation. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

In Dennis Port, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 26°C in July, the warmest time of the year, to a chilly 4°C during cooler months like February.

At night, temperatures typically drop to an average of around -4°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Dennis Port experiences significant rain/snowfall throughout the year, averaging 1225 mm of precipitation annually. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 136 mm of precipitation, spread over 14 rainy days.

In contrast, August experiences a drier climate, with about 78 mm of rainfall spread across 9 rainy days.

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

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Dennis Port. While July receives considerable daily sunshine with up to 10.0 hours, January marks the darkest time of the year, where sunshine is scarce with only 4.9 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Nantucket, the United States of America (41 KM, 25 Miles).

Daily hours of sunshine

Data from: Nantucket, the United States of America (41 KM, 25 Miles).

Forecast for Dennis Port (MA)

Sat   Dec 21
1°C | -6°C
NW 6 m/s
1.5 mm
broken clouds and small chance of slight rain

broken clouds and small chance of slight rain

Sun   Dec 22
-4°C | -8°C
NW 4 m/s
overcast and no rain

overcast and no rain

Mon   Dec 23
1°C | -7°C
W 2 m/s
0.9 mm
partly cloudy and small chance of slight snow

partly cloudy and small chance of slight snow

The best time of year to visit Dennis Port in the United States of America

During the months of June, 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 Dennis Port?
    July has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in Dennis Port?
    The coldest month is February with an average maximum temperature of 4°C.
  • Which is the wettest month in Dennis Port?
    December tops the wettest month list with 136 mm of rainfall.
  • Which is the driest month in Dennis Port?
    August is the driest month with 78 mm of precipitation.
  • Which is the sunniest month in Dennis Port?
    July is the sunniest month with an average of 301 hours of sunshine.

  • 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.