World Resorts USA Nantucket Weather

Nantucket 7 Days Forecast

04.10
sun
Day
61°F
W 18 mph
Precip.
23%
Night
61°F
SW 19 mph
Precip.
74%
05.10
mon
Day
61°F
E 21 mph
Precip.
23%
Night
59°F
SE 25 mph
Precip.
2%
06.10
tue
Day
52°F
SE 16 mph
Precip.
3%
Night
57°F
SE 16 mph
Precip.
1%
07.10
wed
Day
57°F
NE 11 mph
Precip.
2%
Night
63°F
NE 19 mph
Precip.
7%
08.10
thu
Day
64°F
NE 21 mph
Precip.
11%
Night
64°F
E 19 mph
Precip.
23%
09.10
fri
Day
61°F
SE 11 mph
Precip.
4%
Night
63°F
E 9 mph
Precip.
6%
10.10
sat
Day
57°F
S 17 mph
Precip.
4%
Night
59°F
N 5 mph
Precip.
3%

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 61.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 56.8°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

Sunniest months:
June 14 days
October 13 days
July 12 days
Warmest months:
August 71.7 °F
July 71.5 °F
September 67.1 °F
Warmest sea temp:
August 71.9 °F
July 70.0 °F
September 68.4 °F
Coldest months:
February 36.1 °F
January 36.4 °F
March 40.7 °F
Rainiest months:
October 4 days
January 3 days
December 3 days
Windiest months:
January 19.0 mph
March 19.0 mph
December 18.9 mph

Nantucket on a weather map

Nantucket
+61°F
SW 19 mph
Feels like: +61°F
Precip.: 74%
Places in USA:
Name
°F
+55°F
+61°F
+77°F
+82°F
+90°F
+84°F
+70°F
+70°F
+59°F
+82°F
+66°F
+82°F
+79°F
+64°F
24 Hours Forecast
Nantucket
Local time: 23:05
October 05, monday
0000
61°F
SW
19 mph
0300
61°F
S
19 mph
0600
61°F
S
16 mph
0900
59°F
E
14 mph
1200
61°F
E
21 mph
1500
63°F
E
22 mph
1800
64°F
SE
25 mph
2100
61°F
SE
29 mph
Units of measurement: °C / °F