April 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 April

April in Nantucket, Massachusetts, is a chilly spring month, with average temperature fluctuating between 42.8°F (6°C) and 47.5°F (8.6°C).

Temperature

In April, the average high-temperature marginally rises, from a cold 41.9°F (5.5°C) in March, to a chilly 47.5°F (8.6°C). In April, in Nantucket, the average low-temperature is 42.8°F (6°C).

Humidity

In Nantucket, the average relative humidity is 80%.

Rainfall

In April, in Nantucket, the rain falls for 14.1 days. Throughout April, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 153 rainfall days, and 26.61" (676mm) of precipitation is accumulated.

Snowfall

In Nantucket snow does not fall in April through October.

Ocean temperature

In Nantucket, the average water temperature is 44.1°F (6.7°C).
Note: Swimming in 44.1°F (6.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In April, the average length of the day in Nantucket is 13.4h.

Sunshine

The average sunshine in Nantucket is 8.4h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Nantucket?

In April, the average relative humidity in Nantucket is 80%.

How many days does it rain in April in Nantucket?

In Nantucket, Massachusetts, in April, during 14.1 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow in Nantucket?

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

Does it snow in Nantucket in April?

In April, in Nantucket, it doesn't snow. March is the latest month when it typically snows.

How cold is the water in April in Nantucket?

In Nantucket, Massachusetts, the average seawater temperature in April is 44.1°F (6.7°C). Swimming in 44.1°F (6.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in April in Nantucket?

The average length of the day in April is 13.4h.

How many hours of sunshine does Nantucket have in April?

The average sunshine in April in Nantucket, Massachusetts, is 8.4h.

What is the UV index reading in April in Nantucket?

In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in April
Nantucket, MA

Average temperature in April - Nantucket, MA
  • Average high temperature in April: 8.6°C

The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is February (4.3°C).

  • Average low temperature in April: 6°C

The month with the highest average low temperature is August (20.4°C).
The coldest month (with the lowest average low temperature) is February (0.3°C).

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Average pressure in April
Nantucket, MA

Average pressure in April - Nantucket, MA
  • Average pressure in April: 1015.3mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1013.9mbar).

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Average wind speed in April
Nantucket, MA

Average wind speed in April - Nantucket, MA
  • Average wind speed in April: 25.7km/h

The windiest month (with the highest average wind speed) is January (29.8km/h).
The calmest month (with the lowest average wind speed) is August (19km/h).

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Average humidity in April
Nantucket, MA

Average humidity in April - Nantucket, MA
  • Average humidity in April: 80%

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

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Average rainfall in April
Nantucket, MA

Average rainfall in April - Nantucket, MA
  • Average rainfall in April: 64mm

The wettest month (with the highest rainfall) is October (83mm).
The driest month (with the least rainfall) is November (45mm).

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Average rainfall days in April
Nantucket, MA

Average rainfall days in April - Nantucket, MA
  • Average rainfall days in April: 14.1 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 April
Nantucket, MA

Average snowfall in April - Nantucket, MA
  • Average snowfall in April: 0mm

The month with the highest snowfall is January (27mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in April
Nantucket, MA

Average snowfall days in April - Nantucket, MA
  • Average snowfall days in April: 0.3 days

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

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Average sea temperature in April
Nantucket, MA

Average sea temperature in April - Nantucket, MA
  • Average sea temperature in April: 6.7°C

The best month for swimming (with the highest average sea temperature) is August (19.8°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).

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

Average daylight in April / Average sunshine in April - Nantucket, MA
  • Average daylight in April: 13.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in April: 8.4h

Months with the most sunshine are July and August (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 4.3h).

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Average sunshine days in April
Nantucket, MA

Average sunshine days in April - Nantucket, MA
  • Average sunshine days in April: 13.3 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 April
Nantucket, MA

Average UV index in April - Nantucket, MA
  • Average UV index in April: 3

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

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Average cloud cover in April
Nantucket, MA

Average cloud cover in April - Nantucket, MA
  • Average cloud cover in April: 45

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 April
Nantucket, MA

Average visibility in April - Nantucket, MA
  • Average visibility in April: 10km

Months with the highest visibility are April, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, May and December (9km).

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