Measurements:
°C
°F
Kennebunkport
58°F
NW 11 mph
Feels like: 56°F
Precip: 0%
World Resorts USA Kennebunkport Weather

Kennebunkport Sea Water Temperature

Current Sea Water Temperature:
+46.2°F
Maximum Sea Water Temperature in May: 56.0°F
Minimum Sea Water Temperature in May: 42.8°F
Average water temperature in May: 48.8°F

Sea Water Temperature for the Last 10 Days:

May 14 46.2°F May 09 43.6°F
May 13 46.2°F May 08 45.0°F
May 12 47.2°F May 07 44.2°F
May 11 45.4°F May 06 44.4°F
May 10 43.8°F May 05 45.0°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Kennebunkport was 65.7°F. The maximum and minimum values were 63.6°F and 69.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Kennebunkport was 64.7°F. The maximum and minimum values were 61.6°F and 70.0°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
October 14 days
September 14 days
The most warm months:
July 79.8 °F
August 78.3 °F
June 73.4 °F
Warmest sea temperature:
August 67.5 °F
July 64.8 °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 +56
Hawaii +76
Honolulu +76
Houston +94
Las Vegas +88
Los Angeles +66
Maui +70
Miami +94
Miami Beach +90
New York +68
San Diego +66
San Francisco +62
Sarasota +94
Tampa +94
24 Hours Weather Forecast
Kennebunkport
Local time: 13:07
14 may, thursday
1500 56°F
W
9 mph
1800 52°F
W
9 mph
2100 50°F
W
14 mph
15 may, friday
0000 48°F
W
13 mph
0300 48°F
W
12 mph
0600 48°F
SW
12 mph
0900 48°F
SW
12 mph
1200 48°F
SW
11 mph