Measurements:
°C
°F
CURRENT WEATHER
19:47
Nantucket
62°F
SE 28 mph
Feels like: 62°F
Precip: 3%
World Resorts USA Nantucket Weather

7 Day Weather Forecast

10.05
mon
DAY
62°F
E 18 mph
precip
25%
NIGHT
60°F
SE 26 mph
precip
3%
10.06
tue
DAY
52°F
SE 16 mph
precip
3%
NIGHT
58°F
SE 14 mph
precip
2%
10.07
wed
DAY
60°F
NE 12 mph
precip
2%
NIGHT
64°F
NE 21 mph
precip
7%
10.08
thu
DAY
66°F
NE 24 mph
precip
11%
NIGHT
66°F
SE 13 mph
precip
12%
10.09
fri
DAY
62°F
SE 19 mph
precip
3%
NIGHT
62°F
E 14 mph
precip
3%
10.10
sat
DAY
58°F
SE 15 mph
precip
3%
NIGHT
58°F
W 4 mph
precip
11%
10.11
sun
DAY
60°F
N 19 mph
precip
20%
NIGHT
64°F
N 17 mph
precip
27%

Nantucket Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Nantucket was 16.1°F. The maximum and minimum values were 13.8°F and 19.8°F respectively.

Nantucket on the Weather Map

Best Time to Visit Nantucket
The most sunny months:
June 14 days
October 13 days
July 12 days
The most warm months:
August 74.1 °F
July 73.9 °F
September 69.0 °F
Warmest sea temperature:
August 74.3 °F
July 72.3 °F
September 70.5 °F
The most cold months:
February 34.6 °F
January 34.9 °F
March 39.7 °F
The most rainy months:
October 4 days
January 3 days
December 3 days
The most windy months:
January 19 mph
March 19 mph
December 19 mph
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