30.12
tue
tue
Day
28°F
E 40 mph
Precip.
0%
0%
Night
30°F
E 34 mph
Precip.
0%
0%
31.12
wed
wed
Day
32°F
E 21 mph
Precip.
0%
0%
Night
34°F
E 25 mph
Precip.
0%
0%
01.01
thu
thu
Day
30°F
SE 24 mph
Precip.
0%
0%
Night
30°F
E 22 mph
Precip.
0%
0%
02.01
fri
fri
Day
28°F
E 19 mph
Precip.
75%
75%
Night
32°F
E 14 mph
Precip.
0%
0%
03.01
sat
sat
Day
30°F
SE 12 mph
Precip.
0%
0%
Night
32°F
SE 9 mph
Precip.
0%
0%
04.01
sun
sun
Day
30°F
S 22 mph
Precip.
0%
0%
Night
30°F
SW 14 mph
Precip.
0%
0%
05.01
mon
mon
Day
30°F
NW 5 mph
Precip.
0%
0%
Night
37°F
N 17 mph
Precip.
0%
0%
sea water
temperature
temperature
| Siasconset |
monthly
weather
weather
| Siasconset |
current
weather
weather
| Siasconset |
14 days
forecast
forecast
| Siasconset |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 42.8°F. The highest and lowest sea temperatures during the month were 47.5°F and 39.7°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 38.4°F. The highest and lowest sea temperatures during the month were 42.6°F and 33.8°F.
Air temperature in Siasconset, °F
Precipitation total in Siasconset, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Siasconset
Siasconset on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siasconset
Local time: 17:51
December 30, tuesday
1800
28°F
E
38 mph
38 mph
2100
30°F
E
38 mph
38 mph
December 31, wednesday
0000
30°F
E
34 mph
34 mph
0300
32°F
E
31 mph
31 mph
0600
32°F
E
27 mph
27 mph
0900
32°F
E
25 mph
25 mph
1200
32°F
E
21 mph
21 mph
1500
34°F
E
25 mph
25 mph
