Weather in September
Introducing autumn, the weather in Harpswell, Maine, in September experiences a drop in sea temperatures to an average of 59.7°F (15.4°C). Compared to the balmy August, September prefaces a seasonal variation that ushers in the charm of fall. The weather transitions into milder days with cool evenings, and the landscapes transform into hues of gold, orange, and red. The advent of autumn is appreciated for its quaint allure, carrying forward the serenity along with the cooling trend into October.
Note: Swimming in water that is 59.7°F (15.4°C) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
On the first day of the month, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of September, in Harpswell, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Ocean temperature
In Harpswell, in September, the average water temperature is 59.7°F (15.4°C).Note: Swimming in water that is 59.7°F (15.4°C) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of September, in Harpswell, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is the water in September?
In Harpswell, the average seawater temperature in September is 59.7°F (15.4°C). Swimming in 59.7°F (15.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).
How many hours of daylight does Harpswell have in September?
The average day length in September is 12h and 29min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 6:04 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:22 pm EDT.
Average sea temperature in September
Harpswell, ME
- Average sea temperature in September: 59.7°F
The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is March (37.9°F).
Average daylight in September
Harpswell, 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).
Harpswell, Maine, USA
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