August weather forecast and climate
Brentwood, CA

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

Weather in August

The last month of the summer, August, is also a hot month in Brentwood, California, with average temperature ranging between max 87.4°F (30.8°C) and min 57.4°F (14.1°C).

Temperature

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

Heat index

In August, the average heat index is evaluated at a tropical 92.3°F (33.5°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, wind, pregnancy, and differences in body mass, height, and shape 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 Brentwood, the average relative humidity in August is 56%.

Rainfall

Months with the least rainfall in Brentwood are July and August Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

Snowfall

In Brentwood snow does not fall in January through November.

Daylight

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

Sunshine

In Brentwood, the average sunshine is 11.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Brentwood. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. 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.
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FAQ

What is the temperature in August in Brentwood?

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

What is the average humidity in August in Brentwood?

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

How many days does it rain in August in Brentwood?

In Brentwood, in August, it is raining for 0.8 days, with typically 0.04" (1mm) of accumulated precipitation.

What is the driest month in Brentwood?

Months with the least rainfall in Brentwood are July and August Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain.

When it does not snow in Brentwood?

January through November are months without snowfall in Brentwood.

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

The average length of the day in August is 13.6h.

How many hours of sunshine does Brentwood have in August?

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

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

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

What is the UV index intensity in August in Brentwood?

The average daily maximum UV index in August in Brentwood is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in August
Brentwood, CA

Average temperature in August - Brentwood, CA
  • Average high temperature in August: 30.8°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is December (12.8°C).

  • Average low temperature in August: 14.1°C

The month with the highest average low temperature is September (14.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

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Average pressure in August
Brentwood, CA

Average pressure in August - Brentwood, CA
  • Average pressure in August: 1013.1mbar

The month with the highest atmospheric pressure is January (1020.6mbar).
The month with the lowest atmospheric pressure is June (1012.9mbar).

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Average wind speed in August
Brentwood, CA

Average wind speed in August - Brentwood, CA
  • Average wind speed in August: 11.3km/h

The windiest month (with the highest average wind speed) is June (12.5km/h).
The calmest months (with the lowest average wind speed) are January and November (7.3km/h).

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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: 1mm

The wettest month (with the highest rainfall) is February (53mm).
The driest months (with the least rainfall) are July and August (1mm).

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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).
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: 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
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

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
Brentwood, CA

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

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: 10km

Months with the highest visibility are May, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, April and December (9km).

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