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Town of Shelter Island

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Town of Shelter Island Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Town of Shelter Island year round climate

  • Spring (March–May): Average 5–14°C, mild climate, but occasional showers are possible, with increasing sunshine hours. Common activities: Hiking, birdwatching, cycling. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 19–23°C, warm and humid, with occasional showers or thunderstorms. Common activities: Swimming, boating, beach activities. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 8–18°C, pleasant climate, but September has higher rainfall, with decreasing sunshine hours. Common activities: Viewing autumn leaves, outdoor walks, seaside strolls. Recommended clothing: Comfortable long-sleeved shirts, light jacket, warm clothing.
  • Winter (December–February): Average 1–5°C, cold and humid, with higher chances of rain and snow. Common activities: Indoor activities, museum visits. Recommended clothing: Warm coat, sweater, scarf, hat, gloves.

Town of Shelter Island climatological average

Annual average temperature: approx. 11.5°C / Annual rainfall: approx. 1984 mm / Summer humidity: 65%–75% / Rainiest month: September

Town of Shelter Island monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
1.4°C
189.3
February
1.7°C
110.1
March
5°C
160.9
April
9°C
124.1
May
13.7°C
155.7
June
18.9°C
127.1
July
23.3°C
164.2
August
22°C
181.4
September
18.2°C
311.8
October
12.9°C
214.2
November
7.9°C
78
December
3.6°C
167.4

Town of Shelter Island weather for the next seven days

12/16
Tuesday
Sunny
4.3°C/-2.2°C
12/17
Wednesday
Partly Cloudy
8.2°C/1.9°C
12/18
Thursday
Overcast
9°C/2.9°C
12/19
Friday
Moderate rain
13°C/-0.5°C
12/20
Saturday
Sunny
1.3°C/-1.1°C
12/21
Sunday
Sunny
6.9°C/2.9°C
12/22
Monday
Partly Cloudy
1.2°C/-0.5°C