18.03
wed
wed
Day

34°F
S 12 mph
Precip.
0%
0%
Night

32°F
NW 9 mph
Precip.
0%
0%
19.03
thu
thu
Day

36°F
NW 9 mph
Precip.
0%
0%
Night

37°F
NE 11 mph
Precip.
0%
0%
20.03
fri
fri
Day

41°F
NE 11 mph
Precip.
0%
0%
Night

43°F
N 22 mph
Precip.
0%
0%
21.03
sat
sat
Day

43°F
N 8 mph
Precip.
0%
0%
Night

45°F
NW 4 mph
Precip.
74%
74%
22.03
sun
sun
Day

43°F
NE 13 mph
Precip.
0%
0%
Night

43°F
SE 4 mph
Precip.
100%
100%
23.03
mon
mon
Day

36°F
SW 28 mph
Precip.
100%
100%
Night

37°F
SW 23 mph
Precip.
30%
30%
24.03
tue
tue
Day

34°F
S 27 mph
Precip.
100%
100%
Night

36°F
E 6 mph
Precip.
0%
0%
25.03
wed
wed
Day

39°F
NE 30 mph
Precip.
0%
0%
Night

37°F
SE 20 mph
Precip.
0%
0%
26.03
thu
thu
Day

36°F
NW 13 mph
Precip.
0%
0%
Night

48°F
N 37 mph
Precip.
0%
0%
27.03
fri
fri
Day

50°F
NE 39 mph
Precip.
0%
0%
Night

39°F
S 30 mph
Precip.
100%
100%
28.03
sat
sat
Day

32°F
SW 35 mph
Precip.
100%
100%
Night

28°F
S 30 mph
Precip.
100%
100%
29.03
sun
sun
Day

32°F
NE 24 mph
Precip.
100%
100%
Night

28°F
SE 20 mph
Precip.
44%
44%
30.03
mon
mon
Day

23°F
SE 22 mph
Precip.
68%
68%
Night

25°F
SE 26 mph
Precip.
20%
20%
31.03
tue
tue
Day

25°F
SE 24 mph
Precip.
71%
71%
Night

34°F
SE 25 mph
Precip.
75%
75%
sea water
temperature
temperature
| Siasconset |
monthly
weather
weather
| Siasconset |
current
weather
weather
| Siasconset |
7 days
forecast
forecast
| Siasconset |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 39.2°F. The highest and lowest sea temperatures during the month were 42.3°F and 37.2°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 44.4°F. The highest and lowest sea temperatures during the month were 50.4°F and 42.1°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: 17:26
March 18, wednesday
1800

32°F
NW
9 mph
9 mph
2100

32°F
NW
9 mph
9 mph
March 19, thursday
0000

32°F
NW
9 mph
9 mph
0300

32°F
NW
7 mph
7 mph
0600

34°F
NW
11 mph
11 mph
0900

34°F
NW
10 mph
10 mph
1200

36°F
NW
9 mph
9 mph
1500

36°F
N
6 mph
6 mph




























