World Resorts USA Nantucket Weather

Nantucket sea water temperature

Current sea water temperature:
+43.7°F
Minimum sea water temperature in April: 50.7°F
Maximum sea water temperature in April: 41.5°F
Average sea water temperature in April: 46.0°F

Sea water temperature for the last 10 days:

April 3 43.7°F March 29 43.0°F
April 2 44.1°F March 28 43.3°F
April 1 43.2°F March 27 41.9°F
March 31 42.8°F March 26 42.6°F
March 30 43.2°F March 25 42.3°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
40.6
38.1
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:
February 36.5 °F
January 36.9 °F
March 40.4 °F
Rainiest months:
January 4 days
October 4 days
April 3 days
Windiest months:
March 19.1 mph
January 19.0 mph
December 18.4 mph

Nantucket on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+55°F
+75°F
+75°F
+75°F
+55°F
+59°F
+77°F
+61°F
+79°F
+57°F
+61°F
+82°F
+84°F
+75°F
+46°F
24 Hours Forecast
Nantucket
Local time: 22:14
April 04, friday
0000
48°F
NE
20 mph
0300
46°F
E
16 mph
0600
46°F
E
9 mph
0900
46°F
E
8 mph
1200
46°F
E
9 mph
1500
46°F
E
11 mph
1800
46°F
SW
6 mph
2100
46°F
SW
5 mph
Units of measurement: °C / °F