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Siasconset weather in January

Weather in Siasconset: January

Average day temperature: 36.9°F
Average night temperature: 36.3°F
Sea water temperature: 41.7°F
Number of sunny days: 7 days
Day length: 9.3 - 10.0 hours
Number of rainy days: 4 days
Precipitation totals: 1.6 in.

Air temperature in January, °F

Show year:
2025
2024
2023
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3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
7
14
21
28
35
42
49
56
Day temperature   
Night temperature

The highest day temperature during January of 2025 was 44°F. At the same time the lowest night temperature was 22°F. Day and night temperature averages during January were 33.0°F and 31.8°F.

Sea water temperature in Siasconset in January, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
29
33
37
41
45
49
53

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.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
23%
32%
45%

Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in January, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
1.3
1.8
1.6
1.2
1.1
1.3
1.4
1.7
1.3
1.8
1.6
1.2
1.1
1.3
1.4
1.7
1.6

Precipitation total value in Siasconset in January is 1.6 in. Other months of the year show relatively similar values.

Wind speed in January, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
3.3
6.5
9.8
13.0
16.3
19.5
22.8
18.4
18.3
15.7
15.0
13.2
12.9
13.6
15.8
17.1
19.0
18.1
18.4
18.3
15.7
15.0
13.2
12.9
13.6
15.8
17.1
19.0
18.1
19.0

The average wind speed value in January is 19.0 mph It makes January most windy month of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.2
4.7
6.3
7.9
9.5
11.0
4.0
5.6
5.9
7.3
8.4
8.6
9.2
7.9
6.6
5.9
4.4
4.0
5.6
5.9
7.3
8.4
8.6
9.2
7.9
6.6
5.9
4.4
4.2

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 4.2.

Best time for vacation in Siasconset

Sunniest months:
June 14 days
September 13 days
July 12 days
Warmest months:
August 71.3 °F
July 70.7 °F
September 66.9 °F
Warmest sea temp:
August 68.8 °F
July 66.6 °F
September 66.1 °F
Coldest months:
January 36.9 °F
February 37.1 °F
March 40.3 °F
Rainiest months:
January 4 days
October 4 days
March 3 days
Windiest months:
January 19.0 mph
March 19.0 mph
December 18.4 mph

Siasconset on a weather map

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24 Hours Forecast
Siasconset
Local time: 23:39
February 20, thursday
0000
27°F
E
11 mph
0300
27°F
E
9 mph
0600
27°F
SE
7 mph
0900
25°F
SW
3 mph
1200
27°F
S
11 mph
1500
28°F
S
12 mph
1800
32°F
S
11 mph
2100
30°F
SE
16 mph
Units of measurement: °C / °F