August weather forecast
Brentwood, CA

Scenic and organized home community in Brentwood City, California
Scenic and organized home community in Brentwood City, California

Weather in August

August, the last month of the summer in Brentwood, is another hot month, with an average temperature varying between 57.4°F (14.1°C) and 87.4°F (30.8°C).

Temperature

In Brentwood, the average high-temperature in August is relatively the same as in July - a still tropical 87.4°F (30.8°C). The average low-temperature, in Brentwood, is 57.4°F (14.1°C).

Heat index

In August, the average heat index is calculated to be a hot 92.3°F (33.5°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the 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 August in Brentwood, California, is 56%.

Rainfall

July and August are months with the least rain in Brentwood when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

Snowfall

January through November are months without snowfall in Brentwood, California.

Daylight

In Brentwood, California, the average length of the day in August is 13h and 35min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of August, in Brentwood, sunrise is at 6:36 am and sunset at 7:37 pm PDT.

Sunshine

The average sunshine in August in Brentwood, California, is 11.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. 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.
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FAQ

What is the temperature in August in Brentwood?

In August, in Brentwood, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 57.4°F (14.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 92.3°F (33.5°C).

What is the average humidity in August in Brentwood?

In August, the average relative humidity in Brentwood is 56%.

What is the driest month in Brentwood?

July and August are months with the least rain in Brentwood, California, when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

How many days does it rain in August in Brentwood?

In August, in Brentwood, the rain falls for 0.8 days. Throughout August, 0.04" (1mm) of precipitation is accumulated.

When it does not snow in Brentwood?

In Brentwood, snow does not fall in January through November.

How many hours of daylight does Brentwood have in August?

In Brentwood, the average day length in August is 13h and 35min.

When is the sunrise / sunset in August in Brentwood?

On the first day of August in Brentwood, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:37 pm PDT.

How many hours of sunshine does Brentwood have in August?

In August, the average sunshine duration in Brentwood is 11.9h.

What are the months with the highest UV index in Brentwood?

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

What is the UV index intensity in August in Brentwood?

The average daily maximum UV index in August in Brentwood, California, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Brentwood, CA

Average temperature in August - Brentwood, CA
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in August: 57.4°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in August
Brentwood, CA

Average pressure in August - Brentwood, CA
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Brentwood, CA

Average wind speed in August - Brentwood, CA
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in August
Brentwood, CA

Average humidity in August - Brentwood, CA
  • Average humidity in August: 56%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in August
Brentwood, CA

Average rainfall in August - Brentwood, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in August
Brentwood, CA

Average rainfall days in August - Brentwood, CA
  • Average rainfall days in August: 0.8 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days in August
Brentwood, CA

Average snowfall days in August - Brentwood, CA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in August / Average sunshine in August - Brentwood, CA
  • Average daylight in August: 13h and 35min

The month with the longest days is June (Average daylight: 14h and 45min).
The month with the shortest days is December (Average daylight: 9h and 35min).

  • Average sunshine in August: 11h and 54min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in August
Brentwood, CA

Average sunshine days in August - Brentwood, CA
  • Average sunshine days in August: 29.8 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in August
Brentwood, CA

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

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

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Average cloud cover in August
Brentwood, CA

Average cloud cover in August - Brentwood, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in August
Brentwood, CA

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

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

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