April weather forecast and climate
Islip, NY

What is the temperature in April in Islip?

In April, the average high-temperature is 57.6°F (14.2°C), and the average low-temperature is 40.6°F (4.8°C).

How much does it rain in Islip in April?

In April, in Islip, the rain falls for 11.3 days. Throughout April, 4.3" (110.2mm) of precipitation is accumulated.

What is the last month it snows in Islip?

April is the last month it regularly snows in Islip, New York. During 0.3 snowfall days, in April, Islip aggregates 0.6" (15.2mm) of snow.

What is the water temperature in April in Islip?

In Islip, in April, the average water temperature is 45.3°F (7.4°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.
Average temperature in April - Islip, NY
  • Average high temperature in April: 57.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (38°F).

  • Average low temperature in April: 40.6°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.3°F).

Average rainfall in April - Islip, NY
  • Average rainfall in April: 4.3"

The wettest month (with the highest rainfall) is March (4.4").
The driest month (with the lowest rainfall) is February (3.3").

Average rainfall days in April - Islip, NY
  • Average rainfall days in April: 11.3 days

The month with the highest number of rainy days is April (11.3 days).
Months with the lowest number of rainy days are August and October (8.5 days).

Average snowfall in April - Islip, NY
  • Average snowfall in April: 0.6"

The month with the highest snowfall is February (7.1").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in April - Islip, NY
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is January (3.7 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in April - Islip, 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 - Islip, NY
  • Average daylight in April: 13.3h

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

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