Measurements:
°C
°F
Kennebunkport
58°F
SW 3 mph
Feels like: 58°F
Precip: 3%
World Resorts USA Kennebunkport Weather

Kennebunkport Sea Water Temperature

Current Sea Water Temperature:
+62.6°F
Maximum Sea Water Temperature in September: 70.8°F
Minimum Sea Water Temperature in September: 59.0°F
Average water temperature in September: 64.0°F

Sea Water Temperature for the Last 10 Days:

September 15 62.6°F September 10 65.0°F
September 14 63.4°F September 09 65.8°F
September 13 62.8°F September 08 65.4°F
September 12 63.6°F September 07 66.2°F
September 11 65.0°F September 06 66.6°F

When is the Warmest Sea for Kennebunkport?

According to our data for the last three years for Kennebunkport the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Kennebunkport was 67.5°F. The maximum and minimum values were 63.4°F and 71.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Kennebunkport was 64.1°F. The maximum and minimum values were 58.8°F and 68.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Kennebunkport was 65.2°F. The maximum and minimum values were 62.6°F and 66.6°F respectively.

Best Time to Visit Kennebunkport
The most sunny months:
November 15 days
September 14 days
October 14 days
The most warm months:
July 81.0 °F
August 79.4 °F
June 74.2 °F
Warmest sea temperature:
August 67.5 °F
July 64.7 °F
September 63.9 °F
The most cold months:
January 29.4 °F
February 30.3 °F
December 34.9 °F
The most rainy months:
July 3 days
October 3 days
April 3 days
The most windy months:
March 9 mph
November 8 mph
December 8 mph

Kennebunkport on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +72
Sarasota +86
Washington +66
24 Hours Weather Forecast
Kennebunkport
Local time: 09:42
15 sep, tuesday
1200 66°F
NW
4 mph
1500 66°F
NW
9 mph
1800 60°F
NW
7 mph
2100 52°F
N
5 mph
16 sep, wednesday
0000 50°F
NE
5 mph
0300 50°F
NE
6 mph
0600 52°F
NE
7 mph
0900 64°F
NE
8 mph