Chelsea (MA) Weather and Climate: A Comprehensive Guide
The temperature in Chelsea can vary quite a bit throughout the year.
Temperatures can be warm during the warmest months,
and cold during 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
Visitors to Chelsea can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C in July, the warmest time of the year, to a chilly 3°C during cooler months like February.
At night, temperatures typically drop to an average of around -6°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Chelsea is known for its substantial rain/snowfall, with annual precipitation reaching 1232 mm. While snow/rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 132 mm of precipitation, spread over 12 snowy/rainy days. In contrast, September experiences a drier climate, with about 79 mm of rainfall spread across 9 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Chelsea. While May receives considerable daily sunshine with up to 10.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year ranges from 4°C in February to 20°C in August.
Water temperature over the year
Average humidity
The relative humidity is high throughout the year in Chelsea.
The city experiences its highest humidity in August, reaching 72%. In February, the humidity drops to its lowest level at 62%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 5 m/s and 7 m/s throughout the year. It is lowest in June, July, August and September and highest during January, February, March and December.
The mean monthly wind speed over the year (meters per second)
clear and no rain almost clear and no rain overcast and sleetForecast for Chelsea (MA)
7 m/s
5 m/s
5 m/s
The best time of year to visit Chelsea in the United States of America
During the months of June 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:
July has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 3°C.
December tops the wettest month list with 132 mm of rainfall.
September is the driest month with 79 mm of precipitation.
May 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.
