World Resorts USA Nantucket Weather

Nantucket sea water temperature

Current sea water temperature:
+51.8°F
Minimum sea water temperature in November: 59.9°F
Maximum sea water temperature in November: 46.0°F
Average sea water temperature in November: 53.5°F

Sea water temperature for the last 10 days:

November 21 51.8°F November 16 52.3°F
November 20 51.3°F November 15 53.8°F
November 19 51.6°F November 8 57.4°F
November 18 52.2°F November 7 57.7°F
November 17 52.3°F November 6 56.1°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

Sea water temperature in August, °F

Show year:
2024
2023
2022

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

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

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 37.1 °F
January 37.7 °F
March 40.3 °F
Rainiest months:
January 4 days
October 4 days
March 3 days
Windiest months:
March 18.9 mph
December 18.7 mph
January 18.6 mph

Nantucket on a weather map

Nantucket
+48°F
W 19 mph
Feels like: +41°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+50°F
+73°F
+73°F
+45°F
+57°F
+75°F
+66°F
+46°F
+54°F
+55°F
+70°F
+68°F
+66°F
+34°F
24 Hours Forecast
Nantucket
Local time: 11:40
November 21, thursday
1200
48°F
W
19 mph
1500
48°F
W
26 mph
1800
50°F
W
23 mph
2100
50°F
W
26 mph
November 22, friday
0000
50°F
N
17 mph
0300
50°F
NE
29 mph
0600
50°F
NE
19 mph
0900
50°F
NE
14 mph
Units of measurement: °C / °F