August weather forecastRochester, NY
August
Weather in August
August in Rochester carries forward the warmth from July, with near similar temperature highs. Amidst the warm summer days, the city also experiences a peak in relative humidity. Frequent summer showers intersperse the sun-lit days, with the total rainfall amount peaking for the year. The wind speed remains consistent, providing a much-needed respite from the high temperatures. August closes the summer season on a high note, leaving behind memories of sun-soaked days before it transitions into the cooler months.Temperature
The arrival of August records an average high-temperature of a still moderately hot 76.6°F (24.8°C), closely related to the 77.9°F (25.5°C) observed in July. In Rochester, the average low-temperature during the month of August is an enjoyable 62.1°F (16.7°C).Humidity
August and September, with an average relative humidity of 76%, are the least humid months.Rainfall
In Rochester, during August, the rain falls for 18.7 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Rochester, during the entire year, the rain falls for 172.4 days and collects up to 29.45" (748mm) of precipitation.Snowfall
June through September are months without snowfall.Ocean temperature
With an average ocean temperature of 73°F (22.8°C), August is the month with the warmest seawater in Rochester.Note: Considering one's resistance to cold, elements like sunshine, wind, and the prevailing temperature matter when taking a swim in 73°F (22.8°C) waters. (For comparison, the Olympic swimming standard is set between 77°F (25°C) and 82.4°F (28°C).)
Daylight
The average length of the day in August is 13h and 54min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:31 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:46 pm EDT.
Sunshine
In Rochester, the average sunshine in August is 10.4h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Adopt protective measures - It is advised to guard against sun damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Caution! The Sun's UV intensity grows with reflections off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rochester, NY
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in August
Rochester, NY
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Rochester, NY
- Average wind speed in August: 7.3mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in August
Rochester, NY
- Average humidity in August: 76%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are August and September (76%).
Average rainfall in August
Rochester, NY
- Average rainfall in August: 2.83"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in August
Rochester, NY
- Average rainfall days in August: 18.7 days
The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in August
Rochester, NY
- Average snowfall in August: 0"
The month with the highest snowfall is February (7.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Rochester, NY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Rochester, NY
- Average sea temperature in August: 73°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is March (35.8°F).
Average daylight in August /
Average sunshine in August
Rochester, NY
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 2h and 42min).
Average sunshine days in August
Rochester, NY
- Average sunshine days in August: 10.1 days
The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).
Average UV index in August
Rochester, NY
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Rochester, NY
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in August
Rochester, NY
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
