Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 73.4°F (23°C) in August to an enjoyable 67.1°F (19.5°C). Throughout September, Southport's nights cool down to an average of 54.1°F (12.3°C).Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.2 days and typically collects 1.65" (42mm) of precipitation.Snowfall
In Southport, snow does not fall in June through September.Daylight
In Southport, Maine, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:02 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:20 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September in Southport, Maine, is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Southport have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Southport, ME
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Southport, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Southport, ME
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Southport, ME
- Average humidity in September: 80%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Southport, ME
- Average rainfall in September: 1.65"
The wettest months (with the highest rainfall) are October and December (3.5").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Southport, ME
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Southport, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Southport, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Southport, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in September
Southport, ME
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is April (11.9 days).
Average UV index in September
Southport, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Southport, ME
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Southport, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Southport, Maine, USA
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