Measurements:
°C
°F
CURRENT WEATHER
09:39
Brunswick
56°F
S 2 mph
Feels like: 58°F
Precip: 3%
World Resorts USA Brunswick Weather

7 Day Weather Forecast

09.15
tue
DAY
70°F
N 2 mph
precip
1%
NIGHT
50°F
NE 4 mph
precip
23%
09.16
wed
DAY
76°F
N 6 mph
precip
10%
NIGHT
60°F
SW 4 mph
precip
27%
09.17
thu
DAY
66°F
SW 2 mph
precip
21%
NIGHT
58°F
S 3 mph
precip
42%
09.18
fri
DAY
72°F
SE 9 mph
precip
1%
NIGHT
48°F
S 6 mph
precip
4%
09.19
sat
DAY
64°F
NE 4 mph
precip
10%
NIGHT
60°F
NW 7 mph
precip
86%
09.20
sun
DAY
66°F
NE 10 mph
precip
23%
NIGHT
54°F
NE 4 mph
precip
28%
09.21
mon
DAY
64°F
S 9 mph
precip
11%
NIGHT
46°F
S 5 mph
precip
32%

Brunswick Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Brunswick was 17.0°F. The maximum and minimum values were 16.1°F and 17.8°F respectively.

Brunswick on the Weather Map

Best Time to Visit Brunswick
The most sunny months:
September 13 days
October 13 days
November 13 days
The most warm months:
July 80.8 °F
August 79.1 °F
June 74.5 °F
Warmest sea temperature:
August 67.8 °F
July 66.2 °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 2 days
August 2 days
March 2 days
The most windy months:
December 9 mph
March 8 mph
January 8 mph
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