Measurements:
°C
°F
CURRENT WEATHER
17:27
Nantucket
40°F
N 19 mph
Feels like: 32°F
Precip: 0%
World Resorts USA Nantucket Weather

7 Day Weather Forecast

01.09
fri
DAY
40°F
N 14 mph
precip
0%
NIGHT
42°F
NE 25 mph
precip
0%
01.10
sat
DAY
38°F
SW 5 mph
precip
0%
NIGHT
38°F
N 14 mph
precip
100%
01.11
sun
DAY
36°F
SE 11 mph
precip
0%
NIGHT
36°F
E 25 mph
precip
0%
01.12
mon
DAY
32°F
E 27 mph
precip
0%
NIGHT
36°F
E 15 mph
precip
0%
01.13
tue
DAY
36°F
NE 16 mph
precip
0%
NIGHT
40°F
NE 17 mph
precip
0%
01.14
wed
DAY
40°F
N 21 mph
precip
100%
NIGHT
38°F
NE 16 mph
precip
0%
01.15
thu
DAY
34°F
E 12 mph
precip
0%
NIGHT
32°F
SW 21 mph
precip
100%

Nantucket Sea Water Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Nantucket was 2.7°F. The maximum and minimum values were 1.0°F and 5.5°F respectively.

Nantucket on the Weather Map

Best Time to Visit Nantucket
The most sunny months:
June 13 days
September 13 days
October 13 days
The most warm months:
August 73.3 °F
July 72.9 °F
September 69.0 °F
Warmest sea temperature:
August 74.4 °F
July 72.4 °F
September 70.6 °F
The most cold months:
February 35.0 °F
January 35.5 °F
March 39.3 °F
The most rainy months:
January 4 days
October 4 days
December 3 days
The most windy months:
March 19 mph
January 19 mph
December 19 mph
more details