Measurements:
°C
°F
CURRENT WEATHER
00:18
Nantucket
68°F
E 20 mph
Feels like: 68°F
Precip: 8%
World Resorts USA Nantucket Weather

7 Day Weather Forecast

06.25
thu
DAY
74°F
NE 11 mph
precip
8%
NIGHT
68°F
N 16 mph
precip
11%
06.26
fri
DAY
70°F
N 16 mph
precip
14%
NIGHT
70°F
NE 15 mph
precip
19%
06.27
sat
DAY
66°F
NW 9 mph
precip
82%
NIGHT
68°F
S 7 mph
precip
25%
06.28
sun
DAY
64°F
SW 8 mph
precip
17%
NIGHT
68°F
SE 4 mph
precip
11%
06.29
mon
DAY
70°F
N 7 mph
precip
10%
NIGHT
70°F
NE 14 mph
precip
12%
06.30
tue
DAY
70°F
E 9 mph
precip
20%
NIGHT
68°F
SW 9 mph
precip
10%
07.01
wed
DAY
64°F
W 14 mph
precip
18%
NIGHT
66°F
NW 12 mph
precip
7%

Nantucket Sea Water Temperature in June, °F

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Nantucket was 16.3°F. The maximum and minimum values were 13.1°F and 18.5°F respectively.

Nantucket on the Weather Map

Best Time to Visit Nantucket
The most sunny months:
June 13 days
October 13 days
September 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 34.6 °F
January 34.9 °F
March 39.7 °F
The most rainy months:
October 4 days
January 3 days
December 3 days
The most windy months:
January 19 mph
March 19 mph
December 19 mph
more details