16.05
sat
sat
Day
59°F
NE 14 mph
Precip.
0%
0%
Night
55°F
NE 29 mph
Precip.
0%
0%
17.05
sun
sun
Day
55°F
NE 15 mph
Precip.
0%
0%
Night
59°F
E 11 mph
Precip.
0%
0%
18.05
mon
mon
Day
55°F
W 12 mph
Precip.
0%
0%
Night
55°F
N 11 mph
Precip.
0%
0%
19.05
tue
tue
Day
57°F
NE 19 mph
Precip.
0%
0%
Night
59°F
NE 22 mph
Precip.
0%
0%
20.05
wed
wed
Day
57°F
NE 23 mph
Precip.
0%
0%
Night
59°F
E 20 mph
Precip.
0%
0%
21.05
thu
thu
Day
54°F
SW 16 mph
Precip.
0%
0%
Night
54°F
E 4 mph
Precip.
0%
0%
22.05
fri
fri
Day
54°F
W 8 mph
Precip.
0%
0%
Night
54°F
N 11 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 May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 50.7°F. The highest and lowest sea temperatures during the month were 53.2°F and 47.3°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: 21:08
May 17, sunday
0000
55°F
NE
29 mph
29 mph
0300
55°F
NE
26 mph
26 mph
0600
55°F
NE
22 mph
22 mph
0900
55°F
NE
17 mph
17 mph
1200
55°F
NE
15 mph
15 mph
1500
57°F
NE
18 mph
18 mph
1800
59°F
NE
19 mph
19 mph
2100
59°F
E
16 mph
16 mph
