26.06
fri
fri
Day
68°F
N 12 mph
Precip.
23%
23%
Night
70°F
NE 19 mph
Precip.
26%
26%
27.06
sat
sat
Day
68°F
NE 14 mph
Precip.
15%
15%
Night
66°F
NE 7 mph
Precip.
18%
18%
28.06
sun
sun
Day
68°F
W 4 mph
Precip.
15%
15%
Night
64°F
N 5 mph
Precip.
19%
19%
29.06
mon
mon
Day
64°F
N 7 mph
Precip.
17%
17%
Night
68°F
NE 8 mph
Precip.
11%
11%
30.06
tue
tue
Day
68°F
NE 14 mph
Precip.
11%
11%
Night
68°F
NE 20 mph
Precip.
34%
34%
01.07
wed
wed
Day
68°F
E 16 mph
Precip.
48%
48%
Night
66°F
S 17 mph
Precip.
24%
24%
02.07
thu
thu
Day
66°F
S 16 mph
Precip.
18%
18%
Night
66°F
NW 9 mph
Precip.
19%
19%
sea water
temperature
temperature
| Nantucket |
monthly
weather
weather
| Nantucket |
current
weather
weather
| Nantucket |
14 days
forecast
forecast
| Nantucket |
Sea water temperature in June, °F
Show year:
2026
2025
2024
The average sea water temperature in June of 2026 was 61.8°F. The highest and lowest sea temperatures during the month were 67.6°F and 55.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.7°F. The highest and lowest sea temperatures during the month were 72.9°F and 63.9°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: 05:08
June 26, friday
0600
63°F
NE
12 mph
12 mph
0900
64°F
NE
8 mph
8 mph
1200
68°F
N
12 mph
12 mph
1500
68°F
N
16 mph
16 mph
1800
68°F
NE
17 mph
17 mph
2100
68°F
NE
16 mph
16 mph
June 27, saturday
0000
70°F
NE
19 mph
19 mph
0300
70°F
NE
19 mph
19 mph
