Current sea water temperature:
+38.8°F
| Minimum sea water temperature in January: | 46.2°F |
| Maximum sea water temperature in January: | 33.8°F |
| Average sea water temperature in January: | 41.6°F |
| more information | |
14 days
forecast
forecast
| Siasconset |
monthly
weather
weather
| Siasconset |
Sea water temperature for the last 10 days:
| January 7 | 38.8°F | January 2 | 36.7°F |
| January 6 | 38.5°F | January 1 | 39.6°F |
| January 5 | 37.4°F | December 31 | 39.6°F |
| January 4 | 36.3°F | December 30 | 41.2°F |
| January 3 | 37.2°F | December 29 | 41.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Siasconset?
Based on the data about daily sea water temperature for the last three years the warmest sea in Siasconset was noticed in August, July and September.
Monthly Sea Temperatures in Siasconset, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.8°F. The highest and lowest sea temperatures during the month were 70.9°F and 65.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.0°F. The highest and lowest sea temperatures during the month were 70.2°F and 61.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.2°F. The highest and lowest sea temperatures during the month were 68.5°F and 64.6°F.
current
weather
weather
| Siasconset |
weather in
January
January
| Siasconset |
Best time for vacation in Siasconset
Siasconset on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siasconset
Local time: 17:44
January 07, wednesday
1800
37°F
E
19 mph
19 mph
2100
37°F
E
20 mph
20 mph
January 08, thursday
0000
36°F
E
19 mph
19 mph
0300
36°F
SE
14 mph
14 mph
0600
36°F
E
14 mph
14 mph
0900
36°F
SE
12 mph
12 mph
1200
36°F
SE
9 mph
9 mph
1500
37°F
SE
7 mph
7 mph
