16.07
thu
thu
Day
82°F
NE 14 mph
Precip.
4%
4%
Night
75°F
S 20 mph
Precip.
5%
5%
17.07
fri
fri
Day
73°F
S 3 mph
Precip.
2%
2%
Night
72°F
NE 14 mph
Precip.
11%
11%
18.07
sat
sat
Day
73°F
NE 16 mph
Precip.
11%
11%
Night
72°F
N 22 mph
Precip.
65%
65%
19.07
sun
sun
Day
73°F
E 24 mph
Precip.
16%
16%
Night
72°F
E 4 mph
Precip.
5%
5%
20.07
mon
mon
Day
72°F
NE 9 mph
Precip.
4%
4%
Night
70°F
NW 15 mph
Precip.
23%
23%
21.07
tue
tue
Day
73°F
N 21 mph
Precip.
16%
16%
Night
72°F
E 17 mph
Precip.
19%
19%
22.07
wed
wed
Day
70°F
E 16 mph
Precip.
4%
4%
Night
72°F
SW 9 mph
Precip.
6%
6%
23.07
thu
thu
Day
68°F
W 11 mph
Precip.
6%
6%
Night
68°F
NW 10 mph
Precip.
7%
7%
24.07
fri
fri
Day
68°F
W 7 mph
Precip.
6%
6%
Night
70°F
N 9 mph
Precip.
11%
11%
25.07
sat
sat
Day
73°F
N 12 mph
Precip.
45%
45%
Night
73°F
NE 20 mph
Precip.
44%
44%
26.07
sun
sun
Day
68°F
NE 15 mph
Precip.
20%
20%
Night
68°F
W 13 mph
Precip.
11%
11%
27.07
mon
mon
Day
68°F
SW 24 mph
Precip.
12%
12%
Night
66°F
SW 19 mph
Precip.
49%
49%
28.07
tue
tue
Day
68°F
S 21 mph
Precip.
62%
62%
Night
72°F
E 7 mph
Precip.
8%
8%
29.07
wed
wed
Day
72°F
NE 11 mph
Precip.
10%
10%
Night
72°F
N 11 mph
Precip.
9%
9%
sea water
temperature
temperature
| Nantucket |
monthly
weather
weather
| Nantucket |
current
weather
weather
| Nantucket |
7 days
forecast
forecast
| Nantucket |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 69.2°F. The highest and lowest sea temperatures during the month were 71.8°F and 66.7°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: 08:47
July 16, thursday
0900
75°F
E
11 mph
11 mph
1200
82°F
NE
14 mph
14 mph
1500
81°F
NE
17 mph
17 mph
1800
79°F
NE
22 mph
22 mph
2100
75°F
E
21 mph
21 mph
July 17, friday
0000
75°F
S
20 mph
20 mph
0300
72°F
S
4 mph
4 mph
0600
73°F
SE
12 mph
12 mph
