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

Looking to travel to Chelsea in September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In Chelsea, September is characterized by high temperatures and moderate rainfall. Daytime temperatures hover around 24°C, while nights can cool down to about 15°C.

Chelsea in September usually receives moderate rainfall, averaging around 79 mm for the month. It's the month with the least rainfall. Whether you're keen on hiking, outdoor festivals, or just enjoying a walk in the park, this month provides a reliably dry backdrop for all your plans. Based on our climate data of the past 30 years, about 9 days of rain are anticipated.

The days are predominantly sunny, with an estimated total of around 238 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

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 in September and which places have the best weather 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 Chelsea in September?

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 in September.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

Weather and Climate 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 climate conditions. Find out where to go with our weather planner.