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 (16°C). 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

The average high-temperature slightly decreases in October, shifting from a refreshing 67.6°F (19.8°C) in September to a still comfortable 60.8°F (16°C). Nantucket registers a steady nighttime temperature averaging a still refreshing 56.3°F (13.5°C) throughout October.

Humidity

In October, the average relative humidity is 77%.

Rainfall

October is the month with the most rainfall in Nantucket. Rain falls for 13.8 days and accumulates 3.27" (83mm) of precipitation.

Snowfall

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

Ocean temperature

In Nantucket, the average seawater temperature in October is 59.9°F (15.5°C).
Note: Swimming is not a pleasurable activity for the majority in water at 59.9°F (15.5°C). Breathing control gets harder as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).

Daylight

In Nantucket, Massachusetts, the average length of the day in October is 11h and 5min.
On the first day of the month, sunrise is at 6:37 am and sunset at 6:21 pm. On the last day of October, in Nantucket, sunrise is at 7:11 am and sunset at 5:36 pm EDT.

Sunshine

The average sunshine in October in Nantucket is 6.7h.

UV index

The average daily maximum UV index in October in Nantucket is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 4 in October translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What are October temperatures in Nantucket?

October temperatures vary between a high-temperature of 60.8°F (16°C) and a low-temperature of 56.3°F (13.5°C).

What is the average humidity in October in Nantucket?

The average relative humidity in October is 77%.

What is the rainiest month in Nantucket?

The month with the most rainfall in Nantucket is October, when the rain falls for 13.8 days and typically aggregates up to 3.27" (83mm) of precipitation.

How much does it rain in Nantucket in October?

In Nantucket, during October, the rain falls for 13.8 days and regularly aggregates up to 3.27" (83mm) of precipitation.

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, Massachusetts, 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 (15.5°C). For most, swimming in 59.9°F (15.5°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Nantucket have in October?

In October, the average day length in Nantucket, Massachusetts, 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 6:21 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:36 pm EDT.

How many hours of sunshine does Nantucket have in October?

In Nantucket, 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 estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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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