August weather forecast
Brea, CA

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Brea City, California, with beautiful forest surroundings and vast hills and mountain ranges in the distance
Brea City, California, with beautiful forest surroundings and vast hills and mountain ranges in the distance

Weather in August

The last month of the summer, August, is a hot month in Brea, California, with an average temperature varying between 65.8°F (18.8°C) and 86°F (30°C).

Temperature

August temperatures tend to peak at an average high of 86°F (30°C) and dip to a low of 65.8°F (18.8°C).

Heat index

The heat index value for August is estimated at a hot 89.6°F (32°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August is 55%.

Rainfall

In Brea, in August, it is raining for 1.7 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 45.6 rainfall days, and 6.5" (165mm) of precipitation is accumulated.

Daylight

In Brea, the average length of the day in August is 13h and 23min.
On the first day of August, sunrise is at 6:03 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

Sunshine

The months with the most sunshine are July and August, with an average of 12h of sunshine.

UV index

August is the month with the highest UV index in Brea, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 7 suggests these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What is the hottest time of year in Brea?

August is the month when Brea experiences its warmest temperatures, averaging a high of 86°F (30°C) and a low of 65.8°F (18.8°C).

How hot is August in Brea?

The average high-temperature and low-temperature in Brea, California, during August are 86°F (30°C) and 65.8°F (18.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is estimated at 89.6°F (32°C).

What is the average humidity in August in Brea?

In August, the average relative humidity in Brea is 55%.

How many days does it rain in August in Brea?

In August, in Brea, California, the rain falls for 1.7 days. Throughout August, 0.12" (3mm) of precipitation is accumulated.

How many hours of daylight does Brea have in August?

The average day length in August in Brea, California, is 13h and 23min.

What time are sunrise and sunset in August in Brea?

On the first day of August in Brea, California, sunrise is at 6:03 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

What are the months with the most sunshine in Brea?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Brea.

How long on average sun shines in August in Brea?

The average sunshine duration in August is 12h.

What is the month with the highest UV index in Brea?

With an average maximum UV index of 7, August is the month with the highest UV index in Brea.

How high is the UV index in August in Brea?

In August, the average daily maximum UV index in Brea, California, is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Brea, CA

Average temperature in August - Brea, CA
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is August (86°F).
The month with the lowest average high temperature is December (64.6°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (49.8°F).

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Average pressure in August
Brea, CA

Average pressure in August - Brea, CA
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Brea, CA

Average wind speed in August - Brea, CA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

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Average humidity in August
Brea, CA

Average humidity in August - Brea, CA
  • Average humidity in August: 55%

The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (49%).

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Average rainfall in August
Brea, CA

Average rainfall in August - Brea, CA
  • Average rainfall in August: 0.12"

The wettest month (with the highest rainfall) is December (1.5").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Brea, CA

Average rainfall days in August - Brea, CA
  • Average rainfall days in August: 1.7 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).

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

Average daylight in August / Average sunshine in August - Brea, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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Average sunshine days in August
Brea, CA

Average sunshine days in August - Brea, CA
  • Average sunshine days in August: 26.7 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (22.1 days).

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Average UV index in August
Brea, CA

Average UV index in August - Brea, CA
  • Average UV index in August: 7

The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 4).

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Average cloud cover in August
Brea, CA

Average cloud cover in August - Brea, CA
  • Average cloud cover in August: 5

The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in August
Brea, CA

Average visibility in August - Brea, 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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Brea, California, USA

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