South Portland weather in September (Maine, United States of America)

Thinking of visiting South Portland in September? Check the weather first! Here's what you need to know about the weather for the month.

Temperatures

The typical weather for September in South Portland includes pleasant temperatures and high rainfall. The temperature during the day can rise to approximately 22°C. At night, it falls to around 12°C.

Precipitation

South Portland in September usually receives high rainfall, averaging around 103 mm for the month. Climate data suggests that about 10 days will experience rainfall.

Average sunshine

With approximately 228 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with the best circumstances. While January, February, March, April, November and December tend to showcase less optimal conditions.

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

 

South Portland, monthly averages in September

Min Temperature 12°C  

Max Temperature 22°C  

Water Temperature 16°C *  

Chance of Rain 33%  

Precipitation 103 mm  

Rainy days 10 days  

Humidity 77% *  

Sunshine 228 hours *  

Percentage Sunshine 61% *  

Data from: Portland, 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 South Portland, 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 16°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.

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 South Portland.

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.