Measurements:
°C
°F
Brunswick
2°F
SE 12 mph
Feels like: -12°F
Precip: 0%
World Resorts USA Brunswick Weather

Brunswick Sea Water Temperature

Current Sea Water Temperature:
+43.2°F
Maximum Sea Water Temperature in December: 50.4°F
Minimum Sea Water Temperature in December: 39.6°F
Average water temperature in December: 44.1°F

Sea Water Temperature for the Last 10 Days:

December 04 43.2°F November 29 43.6°F
December 03 44.0°F November 28 45.8°F
December 02 43.8°F November 27 45.4°F
December 01 43.4°F November 26 45.0°F
November 30 42.0°F November 25 44.8°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:
September 13 days
November 13 days
October 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 27.8 °F
February 28.8 °F
December 34.6 °F
The most rainy months:
July 3 days
April 3 days
August 2 days
The most windy months:
February 8 mph
November 8 mph
March 8 mph

Brunswick on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Brunswick
Local time: 01:42
05 dec, friday
0300 2°F
SE
12 mph
0600 0°F
SE
10 mph
0900 6°F
E
8 mph
1200 18°F
NE
9 mph
1500 24°F
NE
11 mph
1800 26°F
NE
11 mph
2100 20°F
NE
11 mph
06 dec, saturday
0000 20°F
NE
8 mph