World Resorts USA Nantucket Weather

Nantucket sea water temperature

Current sea water temperature:
+34.9°F
Minimum sea water temperature in February: 42.3°F
Maximum sea water temperature in February: 33.8°F
Average sea water temperature in February: 38.4°F

Sea water temperature for the last 10 days:

February 18 34.9°F February 13 36.0°F
February 17 35.1°F February 12 35.6°F
February 16 34.5°F February 11 35.8°F
February 15 35.8°F February 10 36.0°F
February 14 36.1°F February 9 33.8°F

When is the warmest sea in Nantucket?

Based on the data about daily sea water temperature for the last three years the warmest sea in Nantucket was noticed in August, July and September.

Monthly Sea Temperatures in Nantucket, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
12
24
36
48
60
72
84
96
45.1
53.2
61.9
68.7
72.5
70.4
62
52.8
46.1
40.7
38.4
40.5

Sea water temperature in August, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
63
66
69
72
75
78
81
84

The average sea water temperature in August of 2024 was 70.6°F. The highest and lowest sea temperatures during the month were 72.9°F and 67.8°F.

Sea water temperature in July, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
61
64
67
70
73
76
79
82

The average sea water temperature in July of 2024 was 70.6°F. The highest and lowest sea temperatures during the month were 74.7°F and 65.1°F.

Sea water temperature in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
56
60
64
68
72
76
80

The average sea water temperature in September of 2024 was 66.3°F. The highest and lowest sea temperatures during the month were 69.6°F and 60.6°F.

Best time for vacation in Nantucket

Sunniest months:
June 14 days
September 13 days
July 12 days
Warmest months:
August 71.3 °F
July 70.7 °F
September 66.9 °F
Warmest sea temp:
August 72.4 °F
July 70.4 °F
September 68.7 °F
Coldest months:
January 36.9 °F
February 37.1 °F
March 40.3 °F
Rainiest months:
January 4 days
October 4 days
March 3 days
Windiest months:
January 19.0 mph
March 18.9 mph
December 18.4 mph

Nantucket on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+27°F
+28°F
+73°F
+73°F
+59°F
+63°F
+77°F
+25°F
+72°F
+61°F
+46°F
+73°F
+70°F
+55°F
+9°F
24 Hours Forecast
Nantucket
Local time: 14:22
February 18, tuesday
1500
25°F
E
36 mph
1800
25°F
E
34 mph
2100
25°F
E
35 mph
February 19, wednesday
0000
23°F
E
33 mph
0300
21°F
E
33 mph
0600
21°F
E
33 mph
0900
19°F
E
28 mph
1200
23°F
E
23 mph
Units of measurement: °C / °F