Measurements:
°C
°F
CURRENT WEATHER
10:31
Falmouth
64°F
SW 11 mph
Feels like: 64°F
Precip: 4%
World Resorts USA Falmouth Weather

7 Day Weather Forecast

09.15
tue
DAY
66°F
SW 11 mph
precip
3%
NIGHT
62°F
NW 6 mph
precip
5%
09.16
wed
DAY
68°F
NE 9 mph
precip
15%
NIGHT
70°F
NE 11 mph
precip
11%
09.17
thu
DAY
74°F
NE 9 mph
precip
9%
NIGHT
72°F
NE 14 mph
precip
28%
09.18
fri
DAY
76°F
SE 9 mph
precip
16%
NIGHT
66°F
SW 17 mph
precip
8%
09.19
sat
DAY
64°F
SW 9 mph
precip
8%
NIGHT
62°F
NW 12 mph
precip
16%
09.20
sun
DAY
66°F
N 19 mph
precip
85%
NIGHT
62°F
NE 21 mph
precip
32%
09.21
mon
DAY
66°F
SW 15 mph
precip
15%
NIGHT
62°F
W 13 mph
precip
16%

Falmouth Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Falmouth was 22.5°F. The maximum and minimum values were 21.7°F and 23.3°F respectively.

Falmouth on the Weather Map

Best Time to Visit Falmouth
The most sunny months:
November 15 days
June 14 days
October 14 days
The most warm months:
July 78.0 °F
August 77.6 °F
September 71.5 °F
Warmest sea temperature:
August 76.8 °F
July 75.3 °F
September 72.7 °F
The most cold months:
February 34.8 °F
January 34.9 °F
December 41.2 °F
The most rainy months:
January 3 days
October 3 days
July 2 days
The most windy months:
November 14 mph
January 14 mph
December 14 mph
more details