Measurements:
°C
°F
Falmouth
60°F
SE 22 mph
Feels like: 60°F
Precip: 2%
World Resorts USA Falmouth Weather

Falmouth Sea Water Temperature

Current Sea Water Temperature:
+66.0°F
Maximum Sea Water Temperature in October: 72.0°F
Minimum Sea Water Temperature in October: 57.6°F
Average water temperature in October: 64.9°F

Sea Water Temperature for the Last 10 Days:

October 05 66.0°F September 30 66.2°F
October 04 66.8°F September 29 65.4°F
October 03 66.8°F September 28 66.2°F
October 02 67.0°F September 27 66.4°F
October 01 66.2°F September 26 67.2°F

When is the Warmest Sea for Falmouth?

According to our data for the last three years for Falmouth 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: 2026 2025 2024

The average sea surface temperature in August 2026 for Falmouth was 77.0°F. The maximum and minimum values were 74.2°F and 79.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Falmouth was 75.0°F. The maximum and minimum values were 73.0°F and 76.0°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Falmouth was 72.3°F. The maximum and minimum values were 65.4°F and 76.6°F respectively.

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 71.4 °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

Falmouth on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +60
Hawaii +82
Houston +84
Las Vegas +92
Los Angeles +102
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Falmouth
Local time: 21:03
06 oct, tuesday
0000 56°F
SE
19 mph
0300 54°F
SE
19 mph
0600 50°F
SE
21 mph
0900 48°F
SE
17 mph
1200 54°F
SE
14 mph
1500 60°F
E
16 mph
1800 60°F
SE
16 mph
2100 56°F
SE
13 mph