3 to 15°C
temperature
1967 hours
sunshine per day
1615 mm
rain
108 days
dry
213 days
rain
44 days
snow

Climate of Long Island

Long Island has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Long Island is 19° degrees and there is about 636 inch of rain in a year. It is dry for 118 days a year with an average humidity of 84% and an UV-index of 2.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 3°C and 15°C
  • Night:the average nighttime temperature is between 1°C and 12°C
  • Sea temperature: the sea temperature is between -1°C and 14°C
  • Rain: it rains 213 days and there is a total of approximately 1615 mm rainfall
  • Snow: it snows an average of 44 days per year
  • Sun hours: throughout the year there are 1967 sun hours
Maximum temperature: between 3°C and 15°C
Warmest month: 15°C in July
Coldest month: 3°C in December
Night temperature: between 1°C and 12°C
Sea temperature: between -1°C and 14°C
Dry days: 108 days
Days with rain: 213 days
Days with snow: 44 days
Total rain sum: 1615 mm
Hours of sunshine: 1967 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Long Island.

Precipitation graph

This graph shows the average amount of rainfall per month for Long Island.

Climate table of Long Island

In this climate table you can see at a glance what the average weather per month is for Long Island. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Long Island might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 39 38 41 46 51 55 59 60 56 49 42 38
Night temp. (°F) 35 33 35 40 45 49 53 54 51 45 38 34
Water temp. (°F) 37 29 34 43 48 56 55 57 56 52 50 48
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 78 43 53 52 28 26 30 42 65 72 76 70
Days with rain 19 13 16 20 15 17 17 17 20 21 21 17
Days with snow 7 8 11 3 - - - - - - 5 10
Dry days 5 7 4 7 16 13 14 14 10 10 4 4
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 3 4 5 6 7 7 7 8 7 4 3 3
Wind force (Bft) 3 3 3 3 2 2 2 2 3 3 3 3
UV-index 1 2 2 2 3 3 4 4 3 2 1 1

Best time to visit Long Island

The best time to visit Long Island in the state of Alaska is from February and May through August. In this period you have a very cold temperature and sometimes precipitation. The highest average temperature in Long Island is 60°F in August and the lowest is 38°F in February. The highest water temperature is 57°F and it does not get colder than 29°F.

Climate of Long Island by month

What is the average climate in a given month for Long Island? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Long Island weather experiences

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