August weather forecast and climate
Diablo, CA

Weather in August

The last month of the summer, August, is another warm month in Diablo, California, with average temperature varying between 82.9°F (28.3°C) and 56.7°F (13.7°C).

Temperature

In Diablo, the average high-temperature is relatively the same as in July - a still moderately hot 82.9°F (28.3°C). In Diablo, the average low-temperature is 56.7°F (13.7°C).

Heat index

The average heat index in August is calculated to a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

The average relative humidity in Diablo, California, is 61%.

Rainfall

July and August are months without rainfall in Diablo.

Daylight

In August, the average length of the day in Diablo is 13.6h.

Sunshine

In Diablo, California, the average sunshine is 11.9h.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Diablo?

In August, in Diablo, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 56.7°F (13.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in August in Diablo?

In Diablo, the average relative humidity in August is 61%.

Does it rain in Diablo in August?

In Diablo, in August, it doesn't rain. In September, it rains.

What is the driest month in Diablo?

In Diablo rain does not fall in July and August.

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

In August, the average length of the day in Diablo, California, is 13.6h.

How many hours of sunshine does Diablo have in August?

In August, the average sunshine in Diablo is 11.9h.

When is the highest UV index in Diablo?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in August in Diablo?

The average daily maximum UV index in August in Diablo, California, is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in August
Diablo, CA

Average temperature in August - Diablo, CA
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (55.8°F).

  • Average low temperature in August: 56.7°F

Months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).

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Average pressure in August
Diablo, CA

Average pressure in August - Diablo, CA
  • Average pressure in August: 29.92"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in August
Diablo, CA

Average wind speed in August - Diablo, CA
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is May (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

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Average humidity in August
Diablo, CA

Average humidity in August - Diablo, CA
  • Average humidity in August: 61%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in August
Diablo, CA

Average rainfall in August - Diablo, CA
  • Average rainfall in August: 0"

The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0").

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Average rainfall days in August
Diablo, CA

Average rainfall days in August - Diablo, CA
  • Average rainfall days in August: 0.6 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in August /
Average sunshine in August
Diablo, CA

Average daylight in August / Average sunshine in August - Diablo, CA
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 11.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in August
Diablo, CA

Average sunshine days in August - Diablo, CA
  • Average sunshine days in August: 29.9 days

The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in August
Diablo, CA

Average UV index in August - Diablo, CA
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in August
Diablo, CA

Average cloud cover in August - Diablo, CA
  • Average cloud cover in August: 8

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in August
Diablo, CA

Average visibility in August - Diablo, CA
  • Average visibility in August: 6mi

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

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