Chelsea weather in September (Massachusetts, United States of America)

How does the September weather in Chelsea compare to other months? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

Experience perfect weather in Chelsea during September, featuring high temperatures and moderate rainfall. In the daytime, temperatures tend to hover near 24°C, cooling down at night to around 15°C.

Precipitation

Chelsea in September usually receives moderate rainfall, averaging around 79 mm for the month. The month is marked by minimal rainfall, making it a good time for outdoor activities. Enjoy the dry spell, a great time to go hiking. Climate data suggests that about 9 days will experience rainfall.

Average sunshine

There are approximately 238 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Chelsea. August and September typically offer the most agreeable circumstances. On the other hand, January, February, March and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Chelsea climate page with graphs.

 

Chelsea, monthly averages in September

Min Temperature 15°C  

Max Temperature 24°C  

Water Temperature 18°C *  

Chance of Rain 30%  

Precipitation 79 mm  

Rainy days 9 days  

Humidity 69% *  

Windspeed 18 km/h *  

Sunshine 238 hours *  

Percentage Sunshine 63% *  

* Data from: Boston, the United States of America (2 KM, 1 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Chelsea, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. With a water temperature of around 18°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Chelsea.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.