Measurements:
°C
°F
Brunswick
14°F
SE 12 mph
Feels like: 4°F
Precip: 0%
World Resorts USA Brunswick Weather

Brunswick Sea Water Temperature

Current Sea Water Temperature:
+36.0°F
Maximum Sea Water Temperature in January: 45.4°F
Minimum Sea Water Temperature in January: 34.4°F
Average water temperature in January: 39.6°F

Sea Water Temperature for the Last 10 Days:

January 29 36.0°F January 24 34.4°F
January 28 35.6°F January 23 36.2°F
January 27 35.6°F January 22 36.2°F
January 26 35.8°F January 21 36.2°F
January 25 35.8°F January 20 36.2°F

When is the Warmest Sea for Brunswick?

According to our data for the last three years for Brunswick 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 Brunswick was 66.6°F. The maximum and minimum values were 63.4°F and 72.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Brunswick was 65.2°F. The maximum and minimum values were 62.0°F and 69.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Brunswick was 63.5°F. The maximum and minimum values were 61.2°F and 67.2°F respectively.

Best Time to Visit Brunswick
The most sunny months:
November 13 days
October 13 days
September 13 days
The most warm months:
July 79.8 °F
August 78.5 °F
June 73.7 °F
Warmest sea temperature:
August 67.9 °F
July 66.4 °F
September 63.0 °F
The most cold months:
January 27.6 °F
February 28.8 °F
December 33.7 °F
The most rainy months:
July 3 days
April 3 days
August 2 days
The most windy months:
December 9 mph
January 8 mph
February 8 mph

Brunswick on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Brunswick
Local time: 10:54
29 jan, thursday
1200 14°F
SE
12 mph
1500 18°F
SE
12 mph
1800 18°F
SE
12 mph
2100 10°F
SE
13 mph
30 jan, friday
0000 6°F
SE
12 mph
0300 2°F
SE
12 mph
0600 0°F
SE
11 mph
0900 2°F
SE
13 mph