August weather forecast
Shelter Island Heights, NY

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Weather in August

August, the last month of the summer in Shelter Island Heights, is another warm month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 71.2°F (21.8°C).

Temperature

August, known for its average high temperature of 75.9°F (24.4°C) and an average low temperature of 71.2°F (21.8°C), is the warmest month.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Shelter Island Heights, in August, during 14.9 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 154.1 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Shelter Island Heights.

Ocean temperature

August is the month with the warmest seawater, with an average ocean temperature of 72.1°F (22.3°C).
Note: Swimming in 72.1°F (22.3°C) waters may not appeal to those sensitive to cold. Yet, the presence of sunshine, the strength of the wind, and the air temperature can alter this experience. Some might even opt for a wetsuit for added comfort.

Daylight

The average length of the day in August in Shelter Island Heights is 13h and 46min.
On the first day of August in Shelter Island Heights, sunrise is at 5:45 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:23 pm EDT.

Sunshine

July and August, with an average of 10.6h of sunshine, are months with the most sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heed this! UV intensity is much stronger when reflected off sand and water.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Shelter Island Heights?

August, known for its average high temperature of 75.9°F (24.4°C) and an average low temperature of 71.2°F (21.8°C), is the warmest month in Shelter Island Heights, New York.

What is the average August temperature in Shelter Island Heights?

During August, Shelter Island Heights experiences an average high-temperature of 75.9°F (24.4°C) and a low-temperature of 71.2°F (21.8°C).

What is the average humidity in August in Shelter Island Heights?

The average relative humidity in August in Shelter Island Heights is 77%.

How many days does it rain in August in Shelter Island Heights?

In Shelter Island Heights, in August, during 14.9 rainfall days, 2.76" (70mm) of precipitation is typically accumulated.

When it does not snow in Shelter Island Heights?

In Shelter Island Heights, New York, snow does not fall in April through October.

What month is the ocean warmest in Shelter Island Heights?

With an average ocean temperature of 72.1°F (22.3°C), August is the month with the warmest seawater in Shelter Island Heights.

What is the ocean temperature in August in Shelter Island Heights?

In August, the average ocean temperature is 72.1°F (22.3°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 72.1°F (22.3°C) water.

How many hours of daylight does Shelter Island Heights have in August?

The average day length in August is 13h and 46min.

What time are sunrise and sunset in August in Shelter Island Heights?

On the first day of August in Shelter Island Heights, New York, sunrise is at 5:45 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:23 pm EDT.

What is the month with the most sunshine in Shelter Island Heights?

The months with the most sunshine in Shelter Island Heights, New York, are July and August, with an average of 10.6h of sunshine.

How long on average sun shines in August in Shelter Island Heights?

In Shelter Island Heights, New York, the average sunshine duration in August is 10.6h.

What is the month with the highest UV index in Shelter Island Heights?

The months with the highest UV index in Shelter Island Heights are June through August, with an average maximum UV index of 6.

How high is the UV index in August in Shelter Island Heights?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Shelter Island Heights, NY

Average temperature in August - Shelter Island Heights, NY
  • Average high temperature in August: 75.9°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in August: 71.2°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).

Average pressure in August
Shelter Island Heights, NY

Average pressure in August - Shelter Island Heights, NY
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Shelter Island Heights, NY

Average wind speed in August - Shelter Island Heights, NY
  • Average wind speed in August: 10.6mph

The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.4mph).

Average humidity in August
Shelter Island Heights, NY

Average humidity in August - Shelter Island Heights, NY
  • Average humidity in August: 77%

The months with the highest relative humidity are May and June (81%).
The month with the lowest relative humidity is November (72%).

Average rainfall in August
Shelter Island Heights, NY

Average rainfall in August - Shelter Island Heights, NY
  • Average rainfall in August: 2.76"

The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in August
Shelter Island Heights, NY

Average rainfall days in August - Shelter Island Heights, NY
  • Average rainfall days in August: 14.9 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in August
Shelter Island Heights, NY

Average snowfall in August - Shelter Island Heights, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Shelter Island Heights, NY

Average snowfall days in August - Shelter Island Heights, NY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in August
Shelter Island Heights, NY

Average sea temperature in August - Shelter Island Heights, NY
  • Average sea temperature in August: 72.1°F

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

Average daylight in August /
Average sunshine in August
Shelter Island Heights, NY

Average daylight in August / Average sunshine in August - Shelter Island Heights, NY
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in August
Shelter Island Heights, NY

Average sunshine days in August - Shelter Island Heights, NY
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is February (12.8 days).

Average UV index in August
Shelter Island Heights, NY

Average UV index in August - Shelter Island Heights, NY
  • Average UV index in August: 6

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 August
Shelter Island Heights, NY

Average cloud cover in August - Shelter Island Heights, NY
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in August
Shelter Island Heights, NY

Average visibility in August - Shelter Island Heights, NY
  • Average visibility in August: 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).

Shelter Island Heights, New York, USA

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