Cleveland
Ohio, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Cleveland, OH

A view of the Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio, with a view of the old lift bridge and city buildings out far
A view of the Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio, with a view of the old lift bridge and city buildings out far
The last month of the summer, August, is another warm month in Cleveland, Ohio, with average temperature varying between 80.8°F (27.1°C) and 63.1°F (17.3°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still warm 80.8°F (27.1°C). The average low-temperature, in August, is 63.1°F (17.3°C).

Heat index

The average heat index is appraised at 84.7°F (29.3°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, clothing, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Cleveland, the average relative humidity is 73.1%.

Rainfall

In August, in Cleveland, the rain falls for 9.8 days. Throughout August, 3.5" (89.2mm) of precipitation is accumulated. In Cleveland, Ohio, during the entire year, the rain falls for 154.9 days and collects up to 39.1" (994.1mm) of precipitation.

Snowfall

In Cleveland, Ohio, snow does not fall in May through September.

Ocean temperature

With an average ocean temperature of 76.3°F (24.6°C), August is the month with the warmest seawater.
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.3°F (24.6°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

The average length of the day in Cleveland, Ohio, is 13.8h.

Sunshine

The average sunshine in Cleveland is 8.5h.

UV index

The average daily maximum UV index in Cleveland is 8. A UV Index reading of 8 to 10 represents a very high health hazard from the exposure to the Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in August in Cleveland?

In August, in Cleveland, Ohio, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), that factores the actual air temperature with the relative humidity, in August is calculated to 84.7°F (29.3°C).

What is the average humidity in August in Cleveland?

In Cleveland, Ohio, the average relative humidity in August is 73.1%.

How much does it rain in Cleveland in August?

In August, the rain falls for 9.8 days. Throughout August, 3.5" (89.2mm) of precipitation is accumulated.

When it does not snow in Cleveland?

May through September are months without snowfall in Cleveland, Ohio.

What is the month with the warmest ocean in Cleveland?

The month with the warmest seawater in Cleveland is August, with an average ocean temperature of 76.3°F (24.6°C).

What is the water temperature in August in Cleveland?

In August, the average ocean temperature is 76.3°F (24.6°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 76.3°F (24.6°C).

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

In August, the average length of the day in Cleveland is 13.8h.

How many hours of sunshine does Cleveland have in August?

In August, the average sunshine in Cleveland, Ohio, is 8.5h.

What is the UV index intensity in August in Cleveland?

In August, the average daily maximum UV index in Cleveland is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from the exposure to the Sun's UV rays.
Average temperature in August - Cleveland, OH
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.4°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.3°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

Average humidity in August - Cleveland, OH
  • Average humidity in August: 73.1%

The month with the highest relative humidity is December (74.1%).
The month with the lowest relative humidity is April (66.1%).

Average rainfall in August - Cleveland, OH
  • Average rainfall in August: 3.5"

The wettest month (with the highest rainfall) is September (3.8").
The driest month (with the lowest rainfall) is February (2.3").

Average rainfall days in August - Cleveland, OH
  • Average rainfall days in August: 9.8 days

The month with the highest number of rainy days is January (17.1 days).
The month with the lowest number of rainy days is August (9.8 days).

Average snowfall in August - Cleveland, OH
  • Average snowfall in August: 0"

The month with the highest snowfall is January (18.7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in August - Cleveland, OH
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (13.5 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in August - Cleveland, OH
  • Average sea temperature in August: 76.3°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (33.2°F).

Average daylight in August / Average sunshine in August - Cleveland, OH
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 8.5h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 2.2h).

Average UV index in August - Cleveland, OH
  • Average UV index in August: 8

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).