26.04
sun
sun
Day
43°F
W 16 mph
Precip.
100%
100%
Night
46°F
SW 14 mph
Precip.
100%
100%
27.04
mon
mon
Day
48°F
SW 20 mph
Precip.
0%
0%
Night
46°F
SW 22 mph
Precip.
0%
0%
28.04
tue
tue
Day
46°F
SW 25 mph
Precip.
0%
0%
Night
46°F
S 22 mph
Precip.
0%
0%
29.04
wed
wed
Day
48°F
SW 16 mph
Precip.
0%
0%
Night
50°F
NW 15 mph
Precip.
100%
100%
30.04
thu
thu
Day
50°F
NW 14 mph
Precip.
0%
0%
Night
52°F
SE 15 mph
Precip.
100%
100%
01.05
fri
fri
Day
48°F
E 19 mph
Precip.
0%
0%
Night
52°F
N 11 mph
Precip.
0%
0%
02.05
sat
sat
Day
48°F
N 4 mph
Precip.
0%
0%
Night
50°F
E 14 mph
Precip.
0%
0%
03.05
sun
sun
Day
50°F
E 19 mph
Precip.
0%
0%
Night
50°F
E 19 mph
Precip.
0%
0%
04.05
mon
mon
Day
52°F
NE 11 mph
Precip.
0%
0%
Night
52°F
NE 20 mph
Precip.
0%
0%
05.05
tue
tue
Day
54°F
NE 25 mph
Precip.
0%
0%
Night
54°F
N 20 mph
Precip.
0%
0%
06.05
wed
wed
Day
55°F
N 29 mph
Precip.
0%
0%
Night
54°F
NE 19 mph
Precip.
100%
100%
07.05
thu
thu
Day
54°F
SE 9 mph
Precip.
0%
0%
Night
54°F
SE 12 mph
Precip.
0%
0%
08.05
fri
fri
Day
52°F
SW 6 mph
Precip.
27%
27%
Night
48°F
W 18 mph
Precip.
100%
100%
09.05
sat
sat
Day
50°F
SE 19 mph
Precip.
100%
100%
Night
54°F
E 22 mph
Precip.
100%
100%
sea water
temperature
temperature
| Nantucket |
monthly
weather
weather
| Nantucket |
current
weather
weather
| Nantucket |
7 days
forecast
forecast
| Nantucket |
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 45.0°F. The highest and lowest sea temperatures during the month were 48.6°F and 40.6°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 53.2°F. The highest and lowest sea temperatures during the month were 56.3°F and 49.8°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: 17:14
April 26, sunday
1800
48°F
SW
17 mph
17 mph
2100
45°F
SW
16 mph
16 mph
April 27, monday
0000
46°F
SW
14 mph
14 mph
0300
48°F
SW
17 mph
17 mph
0600
48°F
SW
19 mph
19 mph
0900
48°F
SW
19 mph
19 mph
1200
48°F
SW
20 mph
20 mph
1500
48°F
SW
23 mph
23 mph
