Measurements:
°C
°F
Kennebunkport
84°F
E 7 mph
Feels like: 84°F
Precip: 1%
World Resorts USA Kennebunkport Weather

Kennebunkport Sea Water Temperature

Current Sea Water Temperature:
+68.0°F
Maximum Sea Water Temperature in August: 73.6°F
Minimum Sea Water Temperature in August: 61.6°F
Average water temperature in August: 67.6°F

Sea Water Temperature for the Last 10 Days:

August 25 68.0°F August 20 67.6°F
August 24 68.2°F August 19 67.6°F
August 23 67.4°F August 18 67.4°F
August 22 67.4°F August 17 67.8°F
August 21 66.6°F August 16 68.2°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 67.6°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: 2025 2024 2023

The average sea surface temperature in September 2025 for Kennebunkport was 63.5°F. The maximum and minimum values were 60.8°F and 65.6°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 78.3 °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 +80
Chicago +80
Hawaii +84
Houston +106
Las Vegas +116
Los Angeles +96
Maui +70
Miami +92
Myrtle Beach +84
New York +82
San Diego +96
San Francisco +64
Santa Monica +86
Sarasota +92
Washington +84
24 Hours Weather Forecast
Kennebunkport
Local time: 17:36
25 aug, tuesday
1800 84°F
E
7 mph
2100 72°F
SE
3 mph
26 aug, wednesday
0000 66°F
SE
4 mph
0300 58°F
SE
4 mph
0600 56°F
SE
3 mph
0900 72°F
E
2 mph
1200 80°F
NE
2 mph
1500 80°F
NW
7 mph