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

Curious about the climate in Hyannis this September? Use this page to get an overview of the month’s weather conditions.

Temperatures

The month of September in Hyannis typically includes high temperatures and high rainfall. September ushers in the summer season. Daytime temperatures hover around 23°C, while nights can cool down to about 14°C.

Precipitation

Hyannis in September usually receives high rainfall, averaging around 104 mm for the month. Typically around 8 days days of rainfall are expected.

Average sunshine

Expect a lot of sunshine this month, with about 231 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

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

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

 

Hyannis, monthly averages in September

Min Temperature 14°C  

Max Temperature 23°C  

Chance of Rain 25%  

Precipitation 104 mm  

Rainy days 8 days  

Sunshine 231 hours *  

Percentage Sunshine *  

Data from: Nantucket, the United States of America (43 KM, 27 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 Hyannis, 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.

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

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

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.