Climate and monthly weather forecast
Nantucket, MA

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 January

January, like December, in Nantucket, Massachusetts, is a wintry winter month, with an average temperature varying between 40.3°F (4.6°C) and 32.9°F (0.5°C). In January, the average high-temperature is relatively the same as in December - a cold 40.3°F (4.6°C). Weather in January »

Weather in February

February, the last month of the winter in Nantucket, is another cold month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 39.7°F (4.3°C). With an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 32.5°F (0.3°C), February is the coldest month. Weather in February »

Weather in March

March, the first month of the spring in Nantucket, is also a wintry month, with an average temperature fluctuating between 36.1°F (2.3°C) and 41.9°F (5.5°C). In March, the average high-temperature is relatively the same as in February - a still wintry 41.9°F (5.5°C). Weather in March »

Weather in April

April is a frosty spring month in Nantucket, Massachusetts, with an average temperature ranging between min 42.8°F (6°C) and max 47.5°F (8.6°C). In Nantucket, the average high-temperature in April marginally rises from a cold 41.9°F (5.5°C) in March to a chilly 47.5°F (8.6°C). Weather in April »

Weather in May

The last month of the spring, May, is a fresh month in Nantucket, Massachusetts, with an average temperature fluctuating between 54.3°F (12.4°C) and 50.5°F (10.3°C). In May, the average high-temperature slightly increases from a chilly 47.5°F (8.6°C) in April to a fresh 54.3°F (12.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a comfortable month in Nantucket, Massachusetts, with an average temperature varying between 58.6°F (14.8°C) and 62.6°F (17°C). In June, the average high-temperature slightly increases from a fresh 54.3°F (12.4°C) in May to a comfortable 62.6°F (17°C). Weather in June »

Weather in July

July is an agreeable summer month in Nantucket, Massachusetts, with temperature in the range of an average low of 67.3°F (19.6°C) and an average high of 70.5°F (21.4°C). In July, the average high-temperature marginally rises from a comfortable 62.6°F (17°C) in June to a pleasant 70.5°F (21.4°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Nantucket, Massachusetts, with an average temperature varying between 72.1°F (22.3°C) and 68.7°F (20.4°C). August is the warmest month, with an average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 68.7°F (20.4°C). Weather in August »

Weather in September

September, the first month of the autumn in Nantucket, is also an enjoyable month, with an average temperature ranging between min 63.9°F (17.7°C) and max 67.6°F (19.8°C). In Nantucket, the average high-temperature in September is almost the same as in August - a comfortable 67.6°F (19.8°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Nantucket, Massachusetts, with an average temperature ranging between min 56.3°F (13.5°C) and max 60.8°F (16°C). In October, the average high-temperature slightly decreases from 67.6°F (19.8°C) in September to a still enjoyable 60.8°F (16°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Nantucket, Massachusetts, with an average temperature ranging between min 46.9°F (8.3°C) and max 52.7°F (11.5°C). In Nantucket, the average high-temperature in November marginally drops from a comfortable 60.8°F (16°C) in October to a fresh 52.7°F (11.5°C). Weather in November »

Weather in December

December, the first month of the winter in Nantucket, is also a frosty month, with an average temperature ranging between max 45.5°F (7.5°C) and min 38.7°F (3.7°C). In December, the average high-temperature marginally drops from a cool 52.7°F (11.5°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
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FAQ

What are the least humid months in Nantucket?

January, November and December, with an average relative humidity of 75%, are the least humid months.

How much does it rain in Nantucket?

In Nantucket, Massachusetts, during the entire year, the rain falls for 153 days and collects up to 26.61" (676mm) of precipitation.

When does it snow in Nantucket?

January through March, November and December are months with snowfall.

When does it snow the most in Nantucket?

January is the month with the most snowfall in Nantucket, Massachusetts. Snow falls for 5.8 days and accumulates 1.06" (27mm) of snow.

How many days does it snow in Nantucket?

Throughout the year, in Nantucket, Massachusetts, there are 17.1 snowfall days, and 3.23" (82mm) of snow is accumulated.

What are the months with the lowest UV index in Nantucket?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Nantucket.

What is the coldest month in Nantucket?

With an average high-temperature of 39.7°F (4.3°C) and an average low-temperature of 32.5°F (0.3°C), February is the coldest month in Nantucket, Massachusetts.

When is the ocean coldest in Nantucket?

With an average ocean temperature of 37.9°F (3.3°C), February is the month with the coldest seawater.

When is Daylight Saving Time (DST) in Nantucket?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Nantucket, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Nantucket?

April through October are months without snowfall in Nantucket, Massachusetts.

When are the longest days in Nantucket?

With an average of 15h and 7min of daylight, June has the longest days of the year in Nantucket, Massachusetts.

What is the most humid month in Nantucket?

With an average relative humidity of 86%, July is the most humid month in Nantucket.

What is the month with the most sunshine in Nantucket?

The months with the most sunshine in Nantucket, Massachusetts, are July and August, with an average of 10.7h of sunshine.

What are the months with the highest UV index in Nantucket?

The months with the highest UV index in Nantucket are July and August, with an average maximum UV index of 6.

What is the warmest month in Nantucket?

With an average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 68.7°F (20.4°C), August is the warmest month in Nantucket.

What is the month with the warmest ocean in Nantucket?

The month with the warmest seawater in Nantucket, Massachusetts, is August, with an average ocean temperature of 67.6°F (19.8°C).

What is the wettest 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.

What is the driest month in Nantucket?

The month with the least rainfall is November, when the rain falls for 12.1 days and typically collects 1.77" (45mm) of precipitation.

What is the month with the shortest days in Nantucket?

With an average of 9h and 16min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Nantucket?

The month with the least sunshine in Nantucket is December, with an average of 4.3h of sunshine.

Average temperature
Nantucket, MA

Average temperature - Nantucket, MA

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).

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
Nantucket, MA

Average pressure - Nantucket, MA

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
Nantucket, MA

Average wind speed - Nantucket, MA

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
Nantucket, MA

Average humidity - Nantucket, MA

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
Nantucket, MA

Average rainfall - Nantucket, MA

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
Nantucket, MA

Average rainfall days - Nantucket, MA

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
Nantucket, MA

Average snowfall - Nantucket, MA

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
Nantucket, MA

Average snowfall days - Nantucket, MA

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
Nantucket, MA

Average sea temperature - Nantucket, MA

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 / Average sunshine
Nantucket, MA

Average daylight / Average sunshine - Nantucket, MA

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 16min).

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
Nantucket, MA

Average sunshine days - Nantucket, MA

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
Nantucket, MA

Average UV index - Nantucket, MA

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 visibility
Nantucket, MA

Average visibility - Nantucket, MA

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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