Climate and monthly 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 January

January, like December, in Brea, California, is another comfortable winter month, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 66.7°F (19.3°C). As Brea transitions from December to January, the average high-temperatures adjust to a still refreshing 66.7°F (19.3°C), nearly the same as the previous 64.6°F (18.1°C). Weather in January »

Weather in February

February, the last month of the winter in Brea, is also an enjoyable month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 49.8°F (9.9°C). February's onset brings an average high-temperature of a still enjoyable 66.4°F (19.1°C), showing a minute difference from January's 66.7°F (19.3°C). Weather in February »

Weather in March

March, the first month of the spring in Brea, is an agreeable month, with an average temperature ranging between max 69.3°F (20.7°C) and min 51.4°F (10.8°C). Brea's March reports an average high-temperature of an agreeable 69.3°F (20.7°C), exhibiting a minor difference from February. Weather in March »

Weather in April

April, like March, is another pleasant spring month in Brea, California, with an average temperature varying between 72.1°F (22.3°C) and 54°F (12.2°C). April's arrival shows an average high-temperature of a still pleasant 72.1°F (22.3°C), hardly different from the previous month. Weather in April »

Weather in May

May, the last month of the spring in Brea, is a moderately hot month, with an average temperature varying between 74.3°F (23.5°C) and 56.3°F (13.5°C). The shift into May reveals an average high-temperature of a moderately hot 74.3°F (23.5°C), closely mirroring April's climate. Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Brea, California, with an average temperature fluctuating between 78.8°F (26°C) and 58.8°F (14.9°C). June's advent notes a subtle adjustment in average high-temperature to a still warm 78.8°F (26°C) from May. Weather in June »

Weather in July

July, like June, in Brea, California, is a moderately hot summer month, with an average temperature fluctuating between 83.8°F (28.8°C) and 64.6°F (18.1°C). July welcomes an average high-temperature of a still moderately hot 83.8°F (28.8°C), not much different from the preceding month. Weather in July »

Weather in August

August, the last month of the summer in Brea, is a tropical month, with an average temperature fluctuating between 86°F (30°C) and 65.8°F (18.8°C). Brea's temperatures peak on average in August, reaching 86°F (30°C) at their highest and 65.8°F (18.8°C) at their lowest. For most parts of August, the heat index is calculated to be a tropical 89.6°F (32°C). Weather in August »

Weather in September

September, the first month of the autumn in Brea, is also a moderately hot month, with an average temperature fluctuating between 84.2°F (29°C) and 64.9°F (18.3°C). Brea records an average high-temperature of a warm 84.2°F (29°C) as September arrives, nearly mirroring the previous month's climate. Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Brea, California, with an average temperature ranging between max 78.6°F (25.9°C) and min 60.8°F (16°C). With the onset of October, Brea's average high-temperature slightly adjusts, moderately receding from September's warm 84.2°F (29°C) to a still moderately hot 78.6°F (25.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in Brea, California, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 55.9°F (13.3°C). The onset of November entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 78.6°F (25.9°C) in October to a pleasant 72°F (22.2°C). Weather in November »

Weather in December

December, the first month of the winter in Brea, is still a refreshing month, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 64.6°F (18.1°C). In Brea, the month of December registers the lowest temperatures, averaging 64.6°F (18.1°C) at the peak and 50.2°F (10.1°C) at the lowest. Weather in December »
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

In Brea, during the entire year, the rain falls for 45.6 days and collects up to 6.5" (165mm) of precipitation.

What are the months with the least sunshine?

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.

What are the months with the lowest UV index?

The months with the lowest UV index are February, November and December, with an average maximum UV index of 4.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

What is the most humid month in Brea?

The most humid month is June, with an average relative humidity of 62%.

What is the driest month?

The month with the least rainfall is June, when the rain falls for 1.3 days and typically collects 0.04" (1mm) of precipitation.

When are the longest days?

June has the longest days of the year, with an average of 14h and 24min of daylight.

What are the months with the most sunshine in Brea?

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

What time of the year is the hottest?

The warmest month is August, with an average high-temperature of 86°F (30°C) and an average low-temperature of 65.8°F (18.8°C).

What is the month with the highest UV index?

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

What is the least humid month?

The least humid month is November, with an average relative humidity of 49%.

What time of the year is the coldest?

December, on average, is the coldest month, registering a high temperature of 64.6°F (18.1°C) and a low of 50.2°F (10.1°C).

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 5.8 days and typically aggregates up to 1.5" (38mm) of precipitation.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

Average temperature
Brea, CA

Average temperature - Brea, CA

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).

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).

Average pressure
Brea, CA

Average pressure - Brea, CA

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

Average wind speed
Brea, CA

Average wind speed - Brea, CA

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).

Average rainfall
Brea, CA

Average rainfall - Brea, CA

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

Average rainfall days
Brea, CA

Average rainfall days - Brea, CA

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).

Average daylight / Average sunshine
Brea, CA

Average daylight / Average sunshine - Brea, CA

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).

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).

Average sunshine days
Brea, CA

Average sunshine days - Brea, CA

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

Average visibility
Brea, CA

Average visibility - Brea, CA

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).

Brea, California, USA

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