October weather forecast
Nantucket, MA

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Beautiful homes built on the water overlooking the boats on the water below, in Nantucket, Massachusetts
Beautiful homes built on the water overlooking the boats on the water below, in Nantucket, Massachusetts

Weather in October

October significantly marks the fall season in Nantucket, Massachusetts. Temperatures take a deeper dive, with the average high now standing at 60.8°F. The fall foliage is in its full glory this month, making it an ideal time for nature walk and photography. There is a notable increase in rainfall in October, making it the wettest month. Despite the chills, the charm of Nantucket in October lies in its blend of autumn colors and oceanic vistas.

Temperature

Nantucket experiences a moderate temperature shift at the start of October, with average high-temperatures adjusting a bit from 67.6°F in September to a still refreshing 60.8°F. October notes an average low temperature of 56.3°F in Nantucket, subtly down from the daytime highs.

Humidity

In October, the average relative humidity is 77%.

Rainfall

October is the month with the most rainfall. Rain falls for 13.8 days and accumulates 3.27" of precipitation.

Snowfall

In Nantucket, snow does not fall in April through October.

Ocean temperature

In October, the average ocean temperature in Nantucket is 59.9°F.
Note: For the majority, swimming in 59.9°F does not offer a pleasant experience. Below 69.8°F, the difficulty in controlling breathing escalates.

Daylight

In October, the average length of the day in Nantucket is 11h and 5min.
On the first day of the month, sunrise is at 6:37 am and sunset at 6:23 pm. On the last day of October, in Nantucket, Massachusetts, sunrise is at 7:10 am and sunset at 5:37 pm EDT.

Sunshine

In Nantucket, the average sunshine in October is 6.7h.

UV index

In October, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in October converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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FAQ

What are the temperatures in Nantucket in October?

The high-temperature in Nantucket during October is 60.8°F and the low-temperature is 56.3°F.

What is the average humidity in October in Nantucket?

In October, the average relative humidity is 77%.

What is the rainiest month in Nantucket?

October is the month with the most rainfall. Rain falls for 13.8 days and accumulates 3.27" of precipitation.

How many days does it rain in October in Nantucket?

In October, the rain falls for 13.8 days. Throughout October, 3.27" of precipitation is accumulated.

When it does not snow in Nantucket?

In Nantucket, Massachusetts, snow does not fall in April through October.

Does it snow in Nantucket in October?

In Nantucket, in October, it doesn't snow. In November, it regularly snows.

What is the ocean temperature in October in Nantucket?

In Nantucket, in October, the average water temperature is 59.9°F. For most, swimming in 59.9°F is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F to 59°F.

How many hours of daylight does Nantucket have in October?

In Nantucket, the average day length in October is 11h and 5min.

What time are sunrise and sunset in October in Nantucket?

In October, on the first day of the month, sunrise is at 6:37 am and sunset at 6:23 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:37 pm EDT.

How long on average sun shines in October in Nantucket?

In Nantucket, Massachusetts, the average sunshine duration in October is 6.7h.

How high is the UV index in October in Nantucket?

In Nantucket, the average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASOctoberND
Sep
October
Nov
Average high temperature
67.6°F
60.8°F
52.7°F
Average low temperature
63.9°F
56.3°F
46.9°F
Average pressure
30.05"Hg
30.01"Hg
30.06"Hg
Average wind speed
14mph
16.4mph
17.8mph
Average max. wind speed
14.5mph
17.5mph
19mph
Average wind speed gusts
21.6mph
24.9mph
25.6mph
Average humidity
80%
77%
75%
Average rainfall
2.2"
3.27"
1.77"
Average rainfall days
11.7
13.8
12.1
Average snowfall
0"
0"
0.12"
Average snowfall days
0
0
0.6
Average sea temperature
65.1°F
59.9°F
52.1°F
Average daylight
12h 3min
11h 1min
9h 5min
Average sunshine
8h 4min
6h 4min
5h 1min
Average sunshine days
15.7
14.3
14.4
Average UV index
5
4
3
Average cloud cover
32%
40%
44%
Average visibility
6mi
6mi
6mi

Average temperature in October
Nantucket, MA

Average temperature in October - Nantucket, MA
  • Average high temperature in October: 60.8°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is February (39.7°F).

  • Average low temperature in October: 56.3°F

The month with the highest average low temperature is August (68.7°F).
The coldest month (with the lowest average low temperature) is February (32.5°F).

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Average pressure in October
Nantucket, MA

Average pressure in October - Nantucket, MA
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in October
Nantucket, MA

Average wind speed in October - Nantucket, MA
  • Average wind speed in October: 16.4mph

The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest month (with the lowest average wind speed) is August (11.8mph).

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Average humidity in October
Nantucket, MA

Average humidity in October - Nantucket, MA
  • Average humidity in October: 77%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, November and December (75%).

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Average rainfall in October
Nantucket, MA

Average rainfall in October - Nantucket, MA
  • Average rainfall in October: 3.27"

The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is November (1.77").

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Average rainfall days in October
Nantucket, MA

Average rainfall days in October - Nantucket, MA
  • Average rainfall days in October: 13.8 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (9.2 days).

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Average snowfall in October
Nantucket, MA

Average snowfall in October - Nantucket, MA
  • Average snowfall in October: 0"

The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in October
Nantucket, MA

Average snowfall days in October - Nantucket, MA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in October
Nantucket, MA

Average sea temperature in October - Nantucket, MA
  • Average sea temperature in October: 59.9°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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Average daylight in October /
Average sunshine in October
Nantucket, MA

Average daylight in October / Average sunshine in October - Nantucket, MA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 6h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days in October
Nantucket, MA

Average sunshine days in October - Nantucket, MA
  • Average sunshine days in October: 14.3 days

The month with the most sunshine days is August (16.5 days).
The month with the least sunshine days is January (11.3 days).

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Average UV index in October
Nantucket, MA

Average UV index in October - Nantucket, MA
  • Average UV index in October: 4

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).

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Average cloud cover in October
Nantucket, MA

Average cloud cover in October - Nantucket, MA
  • Average cloud cover in October: 40

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in October
Nantucket, MA

Average visibility in October - Nantucket, MA
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Nantucket, Massachusetts, USA

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