29.12
mon
mon
Day
46°F
N 23 mph
Precip.
0%
0%
Night
36°F
E 37 mph
Precip.
0%
0%
30.12
tue
tue
Day
32°F
E 40 mph
Precip.
0%
0%
Night
32°F
E 36 mph
Precip.
0%
0%
31.12
wed
wed
Day
34°F
E 23 mph
Precip.
0%
0%
Night
37°F
NE 29 mph
Precip.
100%
100%
01.01
thu
thu
Day
27°F
SE 18 mph
Precip.
0%
0%
Night
28°F
SE 16 mph
Precip.
0%
0%
02.01
fri
fri
Day
27°F
SE 9 mph
Precip.
53%
53%
Night
28°F
E 20 mph
Precip.
0%
0%
03.01
sat
sat
Day
32°F
E 21 mph
Precip.
54%
54%
Night
27°F
SE 24 mph
Precip.
0%
0%
04.01
sun
sun
Day
18°F
SE 21 mph
Precip.
0%
0%
Night
27°F
SE 20 mph
Precip.
0%
0%
sea water
temperature
temperature
| Nantucket |
monthly
weather
weather
| Nantucket |
current
weather
weather
| Nantucket |
14 days
forecast
forecast
| Nantucket |
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 48.2°F and 39.2°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 36.9°F. The highest and lowest sea temperatures during the month were 41.9°F and 33.8°F.
Air temperature in Nantucket, °F
Precipitation total in Nantucket, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Nantucket
Nantucket on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Nantucket
Local time: 02:55
December 29, monday
0300
41°F
N
17 mph
17 mph
0600
43°F
N
24 mph
24 mph
0900
45°F
N
23 mph
23 mph
1200
46°F
N
23 mph
23 mph
1500
46°F
NE
27 mph
27 mph
1800
45°F
E
29 mph
29 mph
2100
41°F
E
29 mph
29 mph
December 30, tuesday
0000
36°F
E
37 mph
37 mph
