August weather forecastBarnum Island, NY
August
Weather in August
August, the last month of the summer in Barnum Island, is also a moderately hot month, with an average temperature ranging between max 78.4°F (25.8°C) and min 71.8°F (22.1°C).Temperature
The average high-temperature is a still moderately hot 78.4°F (25.8°C) in August, hardly different from the 79°F (26.1°C) recorded in July. Barnum Island sees a minor drop to an average minimum temperature of 71.8°F (22.1°C) during the night in the month of August.Humidity
The average relative humidity in August is 73%.Rainfall
In Barnum Island, during August, the rain falls for 16.2 days and regularly aggregates up to 3.86" (98mm) of precipitation. Throughout the year, there are 159.2 rainfall days, and 37.17" (944mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 74.1°F (23.4°C).Note: Swimming in 74.1°F (23.4°C) can be enjoyable or not, depending on how you feel about the cold and conditions such as sunshine, wind, and the day's temperature. FYI: Olympic standards dictate waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
The average length of the day in August is 13h and 44min.On the first day of August in Barnum Island, sunrise is at 5:52 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:27 pm EDT.
Sunshine
In Barnum Island, the average sunshine in August is 10.6h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 in August translates into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Heed this! UV intensity is much stronger when reflected off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Barnum Island, NY
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in August: 71.8°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in August
Barnum Island, NY
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Barnum Island, NY
- Average wind speed in August: 9.1mph
The windiest month (with the highest average wind speed) is January (13.6mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in August
Barnum Island, NY
- Average humidity in August: 73%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in August
Barnum Island, NY
- Average rainfall in August: 3.86"
The wettest month (with the highest rainfall) is July (4.17").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in August
Barnum Island, NY
- Average rainfall days in August: 16.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in August
Barnum Island, NY
- Average snowfall in August: 0"
The month with the highest snowfall is March (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Barnum Island, NY
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in August
Barnum Island, NY
- Average sea temperature in August: 74.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in August /
Average sunshine in August
Barnum Island, NY
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in August
Barnum Island, NY
- Average sunshine days in August: 12.3 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in August
Barnum Island, 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
Barnum Island, NY
- Average cloud cover in August: 27
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in August
Barnum Island, 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).
