Measurements:
°C
°F
CURRENT WEATHER
06:40
Bellingham
54°F
SW 2 mph
Feels like: 54°F
Precip: 30%
World Resorts USA Bellingham Weather

7 Day Weather Forecast

09.15
tue
DAY
56°F
SE 2 mph
precip
23%
NIGHT
54°F
W 2 mph
precip
14%
09.16
wed
DAY
64°F
E 4 mph
precip
3%
NIGHT
56°F
SW 3 mph
precip
11%
09.17
thu
DAY
64°F
E 6 mph
precip
5%
NIGHT
56°F
NW 3 mph
precip
10%
09.18
fri
DAY
62°F
NE 7 mph
precip
6%
NIGHT
56°F
W 4 mph
precip
12%
09.19
sat
DAY
58°F
N 7 mph
precip
20%
NIGHT
54°F
W 3 mph
precip
17%
09.20
sun
DAY
60°F
SE 4 mph
precip
13%
NIGHT
54°F
NW 4 mph
precip
16%
09.21
mon
DAY
62°F
N 11 mph
precip
16%
NIGHT
56°F
NW 4 mph
precip
28%

Bellingham Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Bellingham was 15.2°F. The maximum and minimum values were 13.0°F and 16.4°F respectively.

Bellingham on the Weather Map

Best Time to Visit Bellingham
The most sunny months:
July 22 days
August 18 days
June 13 days
The most warm months:
August 74.8 °F
July 74.2 °F
September 69.3 °F
Warmest sea temperature:
August 63.4 °F
July 63.1 °F
September 59.6 °F
The most cold months:
December 40.7 °F
January 41.1 °F
February 42.0 °F
The most rainy months:
November 7 days
January 6 days
October 5 days
The most windy months:
December 5 mph
February 4 mph
March 4 mph
more details