Normal weather for Maine in September
It's pleasantly warm in September in Maine with an average temperature of 20°C. Temperatures this month range from a low of 16°C to a high of 23°C. At night, you can expect temperatures between 7°C and 14°C.
In September, there is an average of 82 mm of precipitation, spread over 11 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Maine in September |
UK | ||
|---|---|---|---|
 Average Temperature |
20°C | 20°C | |
 High Temp |
23°C | 22°C | |
| Low Temp |
16°C | 17°C | |
 Total Precipitation |
82 mm | 44 mm | |
| Rainy Days |
11 days | 8 days | |
Start of September
The month of September starts in Maine with warm temperatures, averaging around 23°C during the day and nights close to 13°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. A T-shirt, light trousers or skirt, and a light jacket are perfect for daytime. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
Mid-September
By mid-September, the average daytime temperature drops to around 20°C, with nights close to 11°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers. During the day, a shirt, maybe a light cardigan, and light trousers will do. In the evening and morning, we recommend a light coat, jumper or cardigan, and long trousers.
End of September
By the end of September, the average daytime temperature in Maine will be around 20°C, with nights close to 10°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers. During the day, a shirt, maybe a light cardigan, and light trousers will do. In the evening and morning, we recommend a warm coat, jumper or cardigan, and long trousers.
Discover cheap holidays to Maine 
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Maine?
Want nice weather? Then September is a great time to be in Maine. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Maine in September
With 31°C, Maine hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 10°C in 2016. The extreme night temperatures ranged from a low of 0°C to a high of 20°C.
Check out the climate of Maine for all months and discover the best travel time
The climate of Maine is based on weather data from . Other spots, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Maine for a full picture of the climate.
August
Plan your next holiday
Don’t miss the best holiday deals for Maine and see what our partners have for you.
Daily Temperature in September in Maine
This chart shows the average daily temperatures, both day and night, for each day in September in Maine, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Maine
The chart below shows the average daily precipitation in September for Maine, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 11 days of rain in Maine.
Daily UV Index in September in Maine
This chart shows the average daily UV index in September in Maine, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Maine Over the Years
This chart shows the average temperature in September in Maine, measured in degrees Celsius, over the past years.
Total Precipitation in September in Maine Over the Years
This chart shows the average precipitation in September in Maine, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Maine
Click on a specific day in September for detailed info on the typical weather on that day in Maine. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Maine
Have you been to Maine in September?
Share your weather experience in September in Maine.
Average Weather in Maine by Month
Click on a month below to see detailed weather info for Maine. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
