Measurements:
°C
°F
Siasconset
62°F
SE 28 mph
Feels like: 62°F
Precip: 3%
World Resorts USA Siasconset Weather

Siasconset Sea Water Temperature

Current Sea Water Temperature:
+63.2°F
Maximum Sea Water Temperature in October: 68.4°F
Minimum Sea Water Temperature in October: 55.6°F
Average water temperature in October: 61.6°F

Sea Water Temperature for the Last 10 Days:

October 05 63.2°F September 30 59.4°F
October 04 63.8°F September 29 61.6°F
October 03 60.6°F September 28 65.2°F
October 02 57.4°F September 27 62.0°F
October 01 55.6°F September 26 63.6°F

When is the Warmest Sea for Siasconset?

According to our data for the last three years for Siasconset 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 Siasconset was 71.7°F. The maximum and minimum values were 67.0°F and 75.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Siasconset was 69.7°F. The maximum and minimum values were 65.8°F and 73.8°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Siasconset was 68.1°F. The maximum and minimum values were 59.4°F and 71.8°F respectively.

Best Time to Visit Siasconset
The most sunny months:
June 14 days
July 13 days
October 13 days
The most warm months:
August 74.1 °F
July 73.9 °F
September 69.0 °F
Warmest sea temperature:
August 70.8 °F
July 68.7 °F
September 67.9 °F
The most cold months:
February 34.6 °F
January 34.9 °F
March 39.7 °F
The most rainy months:
October 4 days
January 3 days
December 3 days
The most windy months:
January 19 mph
March 19 mph
December 19 mph

Siasconset on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
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
Siasconset
Local time: 19:51
05 oct, monday
2100 62°F
SE
28 mph
06 oct, tuesday
0000 60°F
SE
26 mph
0300 56°F
SE
24 mph
0600 54°F
SE
27 mph
0900 50°F
SE
22 mph
1200 52°F
SE
16 mph
1500 58°F
E
16 mph
1800 60°F
SE
17 mph