July weather forecastSag Harbor, NY
July
Weather in July
July is a warm summer month in Sag Harbor, New York, with an average temperature fluctuating between 70.3°F (21.3°C) and 75.7°F (24.3°C).Temperature
The onset of July introduces a subtle rise in the average high-temperature, nudging from a refreshing 67.6°F (19.8°C) in June to a moderately hot 75.7°F (24.3°C). An average temperature of 70.3°F (21.3°C) is logged during the nights of July, a small step down from daytime highs.Humidity
In July, the average relative humidity is 80%.Rainfall
In July, the rain falls for 14.8 days. Throughout July, 2.99" (76mm) of precipitation is accumulated. In Sag Harbor, during the entire year, the rain falls for 154.1 days and collects up to 34.92" (887mm) of precipitation.Snowfall
In Sag Harbor, snow does not fall in April through October.Ocean temperature
In Sag Harbor, in July, the average water temperature is 70.7°F (21.5°C).Note: For most individuals, swimming in 70.7°F (21.5°C) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 69.8°F (21°C).
Daylight
In July, the average length of the day is 14h and 47min.On the first day of July, sunrise is at 5:21 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:06 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.6h of 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 health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 in July translates into this advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Stay aware! UV radiation is magnified when reflecting off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Sag Harbor, NY
- Average high temperature in July: 75.7°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 July: 70.3°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 July
Sag Harbor, NY
- Average pressure in July: 29.96"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 July
Sag Harbor, NY
- Average wind speed in July: 10.4mph
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 July
Sag Harbor, NY
- Average humidity in July: 80%
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 July
Sag Harbor, NY
- Average rainfall in July: 2.99"
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 July
Sag Harbor, NY
- Average rainfall days in July: 14.8 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 July
Sag Harbor, NY
- Average snowfall in July: 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 July
Sag Harbor, NY
- Average snowfall days in July: 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 July
Sag Harbor, NY
- Average sea temperature in July: 70.8°F
The best month for swimming (with the highest average sea temperature) is August (73.3°F).
The coldest month (with the lowest average sea temperature) is February (39.8°F).
Average daylight in July /
Average sunshine in July
Sag Harbor, NY
- Average daylight in July: 14h and 48min
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 July: 10h and 36min
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 July
Sag Harbor, NY
- Average sunshine days in July: 14.4 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 July
Sag Harbor, NY
- Average UV index in July: 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 July
Sag Harbor, NY
- Average cloud cover in July: 29
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 July
Sag Harbor, NY
- Average visibility in July: 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).





