August weather forecast
Rochester, NY

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Amazing High Falls in Rochester, New York, USA
Amazing High Falls in Rochester, New York, USA

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 is marked by an average high-temperature of a still warm 76.6°F (24.8°C), bearing a close resemblance to July. Rochester, during the month of August, experiences an average low-temperature of 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, in August, during 18.7 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In Rochester, during the entire year, the rain falls for 172.4 days and collects up to 29.45" (748mm) of precipitation.

Snowfall

In Rochester, snow does not fall in June through September.

Ocean temperature

The month with the warmest seawater in Rochester is August, with an average ocean temperature of 73°F (22.8°C).
Note: Individual cold sensitivities, influenced by sunshine, wind, and the ambient temperature, play a role in finding a swim in 73°F (22.8°C) water pleasant. (Olympic swimming events mandate water temperatures from 77°F (25°C) to 82.4°F (28°C).)

Daylight

In Rochester, 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 August, the average sunshine is 10.4h.

UV index

In August, the average daily maximum UV index in Rochester, New York, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. To protect against the Sun's most potent rays, avoid direct exposure around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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Frequently asked questions

What is the usual temperature for Rochester in August?

In August, the average high-temperature and low-temperature are 76.6°F (24.8°C) and 62.1°F (16.7°C) respectively.

What is the least humid month in Rochester?

August and September, with an average relative humidity of 76%, are the least humid months in Rochester.

What is the average humidity in August in Rochester?

In Rochester, New York, the average relative humidity in August is 76%.

How many days does it rain in August in Rochester?

In August, in Rochester, the rain falls for 18.7 days. Throughout August, 2.83" (72mm) of precipitation is accumulated.

When it does not snow in Rochester?

In Rochester, snow does not fall in June through September.

When is the ocean warmest in Rochester?

August is the month with the warmest seawater in Rochester, New York, with an average ocean temperature of 73°F (22.8°C).

What is the ocean temperature in August in Rochester?

In Rochester, the average seawater temperature in August is 73°F (22.8°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 73°F (22.8°C).

What is the average length of the day in August in Rochester?

The average day length in August in Rochester is 13h and 54min.

When are sunrise and sunset in August in Rochester?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:31 pm. On the last day of the month, in Rochester, New York, sunrise is at 6:34 am and sunset at 7:46 pm EDT.

How long on average sun shines in August in Rochester?

In August, the average sunshine duration is 10.4h.

What is the UV index reading in August in Rochester?

In August, the average daily maximum UV index in Rochester is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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
Rochester, NY

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).

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Average pressure in August
Rochester, NY

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).

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Average wind speed in August
Rochester, NY

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).

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Average humidity in August
Rochester, NY

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%).

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Average rainfall in August
Rochester, NY

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").

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Average rainfall days in August
Rochester, NY

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).

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Average snowfall in August
Rochester, NY

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").

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Average snowfall days in August
Rochester, NY

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).

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Average sea temperature in August
Rochester, NY

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).

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Average daylight in August /
Average sunshine in August
Rochester, NY

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

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 2min

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).

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Average sunshine days in August
Rochester, NY

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).

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Average UV index in August
Rochester, NY

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).

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Average cloud cover in August
Rochester, NY

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).

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Average visibility in August
Rochester, NY

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).

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Rochester, New York, USA

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