24.12
wed
wed
Day
39°F
SE 34 mph
Precip.
0%
0%
Night
36°F
S 11 mph
Precip.
0%
0%
25.12
thu
thu
Day
37°F
NE 25 mph
Precip.
0%
0%
Night
32°F
SE 33 mph
Precip.
0%
0%
26.12
fri
fri
Day
25°F
S 21 mph
Precip.
0%
0%
Night
30°F
SW 7 mph
Precip.
100%
100%
27.12
sat
sat
Day
34°F
SW 17 mph
Precip.
87%
87%
Night
32°F
S 11 mph
Precip.
0%
0%
28.12
sun
sun
Day
36°F
N 17 mph
Precip.
100%
100%
Night
41°F
E 21 mph
Precip.
75%
75%
29.12
mon
mon
Day
28°F
E 33 mph
Precip.
0%
0%
Night
27°F
E 35 mph
Precip.
0%
0%
30.12
tue
tue
Day
28°F
E 26 mph
Precip.
0%
0%
Night
28°F
SE 23 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 43.3°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: 05:14
December 24, wednesday
0600
37°F
E
21 mph
21 mph
0900
39°F
E
31 mph
31 mph
1200
39°F
SE
34 mph
34 mph
1500
37°F
SE
38 mph
38 mph
1800
37°F
SW
26 mph
26 mph
2100
36°F
S
16 mph
16 mph
December 25, thursday
0000
36°F
S
11 mph
11 mph
0300
34°F
SE
6 mph
6 mph
