Measurements:
°C
°F
Brunswick
54°F
SE 14 mph
Feels like: 50°F
Precip: 0%
World Resorts USA Brunswick Weather

Brunswick Sea Water Temperature

Current Sea Water Temperature:
+42.2°F
Maximum Sea Water Temperature in April: 47.0°F
Minimum Sea Water Temperature in April: 37.0°F
Average water temperature in April: 41.8°F

Sea Water Temperature for the Last 10 Days:

April 23 42.2°F April 18 44.6°F
April 22 42.6°F April 17 42.6°F
April 21 43.4°F April 16 42.6°F
April 20 44.4°F April 15 43.4°F
April 19 44.8°F April 14 41.2°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
September 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 27.4 °F
February 28.7 °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
March 8 mph
January 8 mph

Brunswick on the Weather Map

USA Resorts:
NAME
Chicago +70
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +68
Los Angeles +64
Maui +70
Miami +82
Miami Beach +82
New York +76
San Diego +66
San Francisco +58
Sarasota +88
Tampa +86
Washington +82
24 Hours Weather Forecast
Brunswick
Local time: 12:10
23 apr, thursday
1500 56°F
SE
12 mph
1800 48°F
S
16 mph
2100 40°F
SE
11 mph
24 apr, friday
0000 36°F
S
9 mph
0300 34°F
SE
7 mph
0600 34°F
S
6 mph
0900 42°F
S
9 mph
1200 46°F
SW
4 mph