September weather forecastKennebunkport, ME

September

Weather in September

September, the first month of the autumn in Kennebunkport, is also an agreeable month, with an average temperature ranging between min 54.7°F (12.6°C) and max 68°F (20°C).

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 74.1°F (23.4°C) to a pleasant 68°F (20°C). Throughout the month of September, Kennebunkport witnesses an average temperature of 54.7°F (12.6°C).

Humidity

In Kennebunkport, the average relative humidity in September is 79%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.34" (34mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Kennebunkport is 12h and 29min.
On the first day of September, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:24 pm EDT.

Sunshine

In Kennebunkport, the average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 4 during September translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Kennebunkport experiences an average high-temperature of 68°F (20°C) and a low-temperature of 54.7°F (12.6°C).

The average relative humidity in September is 79%.

September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.34" (34mm) of precipitation.

In September, the rain falls for 10.5 days. Throughout September, 1.34" (34mm) of precipitation is accumulated.

June through September are months without snowfall.

In Kennebunkport, in September, it doesn't snow. In October, it regularly snows.

In September, the average day length is 12h and 29min.

On the first day of September, sunrise is at 6:06 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:24 pm EDT.

The average sunshine duration in September is 8.3h.

In Kennebunkport, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kennebunkport, ME

  • Average high temperature in September: 68°F

The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Kennebunkport, ME

  • Average pressure in September: 30.05"Hg

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Kennebunkport, ME

  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in September
Kennebunkport, ME

  • Average humidity in September: 79%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in September
Kennebunkport, ME

  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in September
Kennebunkport, ME

  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Kennebunkport, ME

  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Kennebunkport, ME

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Kennebunkport, ME

  • Average daylight in September: 12h and 30min

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 18min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in September
Kennebunkport, ME

  • Average sunshine days in September: 18.3 days

The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in September
Kennebunkport, ME

  • Average UV index in September: 4

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Kennebunkport, ME

  • Average cloud cover in September: 34

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
Kennebunkport, 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).