Greenwich weather in September (Connecticut, United States of America)

How does the weather in Greenwich usually fare in September? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

During September, Greenwich usually has high temperatures and moderate rainfall. The daytime often sees temperatures reaching 25°C, but nighttime brings a cool-down to 15°C.

Precipitation

Greenwich in September usually receives moderate rainfall, averaging around 100 mm for the month. Analyzing past climate data, one can expect approximately 10 days of rain.

Average sunshine

Enjoy a sunny month with about 218 hours of sunshine, providing a cheerful and lively atmosphere.

In case you lean more towards enjoying temperate temperatures and rain-free days July typically offers the most optimal weather. In contrast, January, February, March and December tend to have less optimal conditions.

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

 

Greenwich, monthly averages in September

Min Temperature 15°C  

Max Temperature 25°C  

Chance of Rain 33%  

Precipitation 100 mm  

Rainy days 10 days  

Humidity 68% *  

Sunshine 218 hours *  

Percentage Sunshine 59% *  

Data from: New York City, the United States of America (36 KM, 22 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 Greenwich, 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.

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 Greenwich.

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.