August weather forecast and climate
Rochester, NY

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

Weather in August

The last month of the summer, August, is another warm month in Rochester, New York, with average temperature fluctuating between 76.6°F (24.8°C) and 62.1°F (16.7°C).

Temperature

In Rochester, the average high-temperature is practically the same as in July - a still warm 76.6°F (24.8°C). The average low-temperature, in August, is 62.1°F (16.7°C).

Humidity

Months with the lowest humidity are August and September, with an average relative humidity of 76%.

Rainfall

In August, the rain falls for 18.7 days. Throughout August, 2.83" (72mm) of precipitation is accumulated. Throughout the year, there are 172.4 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

Snowfall

In Rochester snow does not fall in June through September.

Ocean temperature

The month with the warmest seawater is August, with an average ocean temperature of 73°F (22.8°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73°F (22.8°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)

Daylight

In Rochester, the average length of the day in August is 13.9h.

Sunshine

The average sunshine in Rochester is 10.4h.

UV index

The average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in August in Rochester?

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

What are the least humid months 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?

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

How much does it rain in Rochester in August?

In Rochester, New York, in August, it is raining for 18.7 days, with typically 2.83" (72mm) of accumulated precipitation.

When it does not snow in Rochester?

June through September are months without snowfall in Rochester.

When is the ocean warmest in Rochester?

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

How warm is the water in August in Rochester?

In Rochester, New York, the average seawater temperature in August is 73°F (22.8°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73°F (22.8°C) water may be enjoyable.

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

In August, the average length of the day is 13.9h.

How long on average sun shines in August in Rochester?

The average sunshine in August in Rochester is 10.4h.

What is the UV index reading in August in Rochester?

In Rochester, New York, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

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"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.92").

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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%

Months with the highest relative humidity are January and February (84%).
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").
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).
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: 13.9h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in August: 10.4h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are January and February (Average sunshine: 2.7).

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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).
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

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January and February (5mi).

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