April weather forecast
West Sayville, NY

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Weather in April

April is a cool spring month in West Sayville, New York, with an average temperature varying between 52.3°F (11.3°C) and 45.1°F (7.3°C).

Temperature

West Sayville's weather shows a minor temperature rise with the arrival of April, moving from a chilly 44.2°F (6.8°C) in March to a cool 52.3°F (11.3°C). A consistent average low-temperature of 45.1°F (7.3°C), with a minor variance from the daytime highs, is noted in West Sayville during the nights of April.

Humidity

The average relative humidity in April is 74%.

Rainfall

In April, the rain falls for 14.1 days. Throughout April, 2.95" (75mm) of precipitation is accumulated. In West Sayville, New York, during the entire year, the rain falls for 155.3 days and collects up to 34.84" (885mm) of precipitation.

Snowfall

April, June through September and November are months without snowfall.

Ocean temperature

In April, the average ocean temperature is 45.3°F (7.4°C).
Note: Dipping in 45.3°F (7.4°C) at temperatures less than 50°F (10°C) without proper gear can lead to pronounced cold shock and breathing difficulties.

Daylight

The average length of the day in April is 13h and 19min.
On the first day of April, sunrise is at 6:34 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 7:47 pm EDT.

Sunshine

The average sunshine in April is 8.6h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 3 during April leads to these advisories:
Guard yourself - Avoiding sunburn is suggested. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are April temperatures?

During April, West Sayville experiences an average high-temperature of 52.3°F (11.3°C) and a low-temperature of 45.1°F (7.3°C).

What is the average humidity in April?

In April, the average relative humidity in West Sayville is 74%.

How much does it rain in April?

In West Sayville, during April, the rain falls for 14.1 days and regularly aggregates up to 2.95" (75mm) of precipitation.

When it does not snow?

April, June through September and November are months without snowfall.

Does it snow in West Sayville in April?

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

What is the water temperature in April?

In West Sayville, New York, the average seawater temperature in April is 45.3°F (7.4°C). Swimming in 45.3°F (7.4°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 April, the average day length is 13h and 19min.

What time are sunrise and sunset in April?

In April, on the first day of the month, sunrise is at 6:34 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 7:47 pm EDT.

How long on average sun shines in April?

In April, the average sunshine duration is 8.6h.

How high is the UV index in April?

In West Sayville, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
West Sayville, NY

Average temperature in April - West Sayville, NY
  • Average high temperature in April: 52.3°F

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in April: 45.1°F

The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in April
West Sayville, NY

Average pressure in April - West Sayville, NY
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
West Sayville, NY

Average wind speed in April - West Sayville, NY
  • Average wind speed in April: 11.9mph

The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).

Average humidity in April
West Sayville, NY

Average humidity in April - West Sayville, NY
  • Average humidity in April: 74%

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).

Average rainfall in April
West Sayville, NY

Average rainfall in April - West Sayville, NY
  • Average rainfall in April: 2.95"

The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in April
West Sayville, NY

Average rainfall days in April - West Sayville, NY
  • Average rainfall days in April: 14.1 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in April
West Sayville, NY

Average snowfall in April - West Sayville, NY
  • Average snowfall in April: 0"

The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").

Average snowfall days in April
West Sayville, NY

Average snowfall days in April - West Sayville, NY
  • Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in April
West Sayville, NY

Average sea temperature in April - West Sayville, NY
  • Average sea temperature in April: 45.4°F

The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in April /
Average sunshine in April
West Sayville, NY

Average daylight in April / Average sunshine in April - West Sayville, NY
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in April: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in April
West Sayville, NY

Average sunshine days in April - West Sayville, NY
  • Average sunshine days in April: 14.5 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in April
West Sayville, NY

Average UV index in April - West Sayville, 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
West Sayville, NY

Average cloud cover in April - West Sayville, NY
  • Average cloud cover in April: 43

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in April
West Sayville, NY

Average visibility in April - West Sayville, 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).

West Sayville, New York, USA

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