April weather forecast
Shelter Island Heights, NY

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Weather in April

April is a fresh spring month in Shelter Island Heights, New York, with an average temperature ranging between max 50°F (10°C) and min 44.2°F (6.8°C).

Temperature

April sees a marginal temperature increase, moving from a chilly 43°F (6.1°C) in March to a cool 50°F (10°C). Shelter Island Heights sees a minor drop to an average minimum temperature of 44.2°F (6.8°C) during the night in the month of April.

Humidity

The average relative humidity in April in Shelter Island Heights is 77%.

Rainfall

In Shelter Island Heights, in April, it is raining for 14.3 days, with typically 2.99" (76mm) of accumulated precipitation. Throughout the year, in Shelter Island Heights, there are 154.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Ocean temperature

In April, the average ocean temperature is 44.4°F (6.9°C).
Note: Danger awaits those who swim in 44.4°F (6.9°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.

Daylight

The average length of the day in April in Shelter Island Heights is 13h and 20min.
On the first day of April, sunrise is at 6:31 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:45 pm EDT.

Sunshine

In Shelter Island Heights, the average sunshine in April is 8.4h.

UV index

In Shelter Island Heights, New York, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 3 in April translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in April in Shelter Island Heights?

An average high-temperature, in April, in Shelter Island Heights, is 50°F (10°C) and the average low-temperature is 44.2°F (6.8°C).

What is the average humidity in April in Shelter Island Heights?

The average relative humidity in April is 77%.

How many days does it rain in April in Shelter Island Heights?

In Shelter Island Heights, in April, during 14.3 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

When it does not snow in Shelter Island Heights?

April through October are months without snowfall in Shelter Island Heights, New York.

Does it snow in Shelter Island Heights in April?

In April, in Shelter Island Heights, New York, it doesn't snow. March is the latest month when it typically snows.

What is the ocean temperature in April in Shelter Island Heights?

In Shelter Island Heights, in April, the average water temperature is 44.4°F (6.9°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Shelter Island Heights have in April?

The average day length in April in Shelter Island Heights, New York, is 13h and 20min.

When are sunrise and sunset in April in Shelter Island Heights?

On the first day of April in Shelter Island Heights, New York, sunrise is at 6:31 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:45 pm EDT.

How long on average sun shines in April in Shelter Island Heights?

The average sunshine duration in April in Shelter Island Heights is 8.4h.

What is the UV index intensity in April in Shelter Island Heights?

In April, the average daily maximum UV index in Shelter Island Heights is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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 April
Shelter Island Heights, NY

Average temperature in April - Shelter Island Heights, NY
  • Average high temperature in April: 50°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in April: 44.2°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

Average pressure in April
Shelter Island Heights, NY

Average pressure in April - Shelter Island Heights, NY
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
Shelter Island Heights, NY

Average wind speed in April - Shelter Island Heights, NY
  • Average wind speed in April: 13.8mph

The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.4mph).

Average humidity in April
Shelter Island Heights, NY

Average humidity in April - Shelter Island Heights, NY
  • Average humidity in April: 77%

The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is November (72%).

Average rainfall in April
Shelter Island Heights, NY

Average rainfall in April - Shelter Island Heights, NY
  • Average rainfall in April: 2.99"

The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in April
Shelter Island Heights, NY

Average rainfall days in April - Shelter Island Heights, NY
  • Average rainfall days in April: 14.3 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in April
Shelter Island Heights, NY

Average snowfall in April - Shelter Island Heights, NY
  • Average snowfall in April: 0"

The month with the highest snowfall is March (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in April
Shelter Island Heights, NY

Average snowfall days in April - Shelter Island Heights, NY
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in April
Shelter Island Heights, NY

Average sea temperature in April - Shelter Island Heights, NY
  • Average sea temperature in April: 44.4°F

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

Average daylight in April /
Average sunshine in April
Shelter Island Heights, NY

Average daylight in April / Average sunshine in April - Shelter Island Heights, NY
  • Average daylight in April: 13h and 2min

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 April: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in April
Shelter Island Heights, NY

Average sunshine days in April - Shelter Island Heights, NY
  • Average sunshine days in April: 14.7 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is February (12.8 days).

Average UV index in April
Shelter Island Heights, NY

Average UV index in April - Shelter Island Heights, NY
  • Average UV index in April: 3

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

Average cloud cover in April
Shelter Island Heights, NY

Average cloud cover in April - Shelter Island Heights, NY
  • Average cloud cover in April: 44

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in April
Shelter Island Heights, NY

Average visibility in April - Shelter Island Heights, NY
  • Average visibility in April: 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).

Shelter Island Heights, New York, USA

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