Best year time to visit Long Island

General weather information about Long Island

Average annual temperature is 16.9 °C

Absolute maximum temperature: 36.6 °C

Absolute minimum temperature: -3.7 °C

Number of sunny days: 173 days

Number of rainy days: 192 days

Look at detailed online map of Long Island

* Weather data for Long Island United States is based on climate observations for 2026 year

Long Island air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)20.825.325.928.730.233.635.236.633.529.627.120.1
Average daytime temperature (°C)13.617.117.821.325.829.731.931.229.023.518.213.5
Average temperature (°C)8.711.211.815.419.723.426.025.522.917.411.97.9
Average night temperature (°C)4.96.77.010.514.618.021.221.217.812.47.13.7
Absolute minimum temperature (°C)-2.7-3.1-3.75.06.314.717.517.213.86.5-2.8-2.9

Long Island monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.09.0
Daylight mean duration (h)10.110.912.013.114.014.514.213.412.411.310.39.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)5.05.98.38.910.611.510.89.610.68.07.46.9
Precipitation (mm)1571531501326914510216416103799
Sunny days12101714101241417222120
Rainy days1918141621182717139911
Snow days000000000000

Long Island - weather forecast by months

Long Island weather in januaryLong Island weather in februaryLong Island weather in marchLong Island weather in aprilLong Island weather in mayLong Island weather in juneLong Island weather in julyLong Island weather in augustLong Island weather in septemberLong Island weather in octoberLong Island weather in novemberLong Island weather in december

Best time to visit Long Island:

The best time to visit Long Island during the most sunny months:

  • June — 11.5(h)
  • July — 10.8(h)

The largest precipitation sum in Long Island is at

  • January — 157(mm)
  • February — 153(mm)
  • March — 150(mm)
  • April — 132(mm)
  • June — 145(mm)
  • August — 164(mm)

    • Weather forecast in the closest to Long Island admin centers

    Weather forecast in the closest towns to Long Island

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    MapTrains schedule
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    Frequently asked questions

    When is the best time to visit Long Island?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Long Island.
    What is the weather like in Long Island?
    See average temperature, rainfall and daylight hours for Long Island by month in the table above.
    How many sunny days does Long Island have?
    The monthly weather statistics above show sunshine and rainfall patterns for Long Island throughout the year.