August weather forecast
Brentwood, CA

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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 also a hot month, with an average temperature ranging between max 87.4°F (30.8°C) and min 57.4°F (14.1°C).

Temperature

Brentwood records an average high-temperature of a still tropical 87.4°F (30.8°C) in August, maintaining a close correlation with July's 88.5°F (31.4°C). The nighttime average for Brentwood in August plummets considerably from its daytime counterpart, resting at a mild 57.4°F (14.1°C).

Heat index

In August, the average heat index is evaluated at a tropical 93.2°F (34°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Heat index determinations are made taking into account the shade and light air movements. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In August, the average relative humidity 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

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

Daylight

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

Sunshine

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

UV index

The months with the highest UV index in Brentwood are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

How hot is it in Brentwood in August?

During August, Brentwood experiences an average high-temperature of 87.4°F (30.8°C) and a low-temperature of 57.4°F (14.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 93.2°F (34°C).

What is the average humidity in August in Brentwood?

In August, the average relative humidity in Brentwood, California, 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 much does it rain in Brentwood in August?

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

When it does not snow in Brentwood?

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

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

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

What time are sunrise and sunset in August in Brentwood?

In August, on the first day of the month, 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 long on average sun shines in August in Brentwood?

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

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

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

How high is the UV index in August in Brentwood?

In August, the average daily maximum UV index in Brentwood, California, is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
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 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 11h and 5min

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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Brentwood, California, USA

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