Brea (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Brea.
Climate overview of Brea
Temperatures in Brea, California, United States of America, vary greatly throughout the year. August is the hottest month at 32°C (90°F), while December is the coldest at 20°C (68°F).
Rainfall is modest, totalling around 268 mm (11 in) annually. The city experiences a distinct dry season from March to November, with very warm summers and pleasant winters. December tends to be the wettest month. The sunniest month is July, with 12.3 hours of sunshine per day on average.
Brea Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Brea - and find the best time to visit.
Monthly Temperature in Brea
The climate in Brea is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very warm 32°C (90°F) in August, the warmest time of the year, to a pleasant 20°C (68°F) during cooler months like December.
At night, you can expect temperatures ranging from 18°C (64°F) in August to around 8°C (46°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Brea
Brea has a relatively dry climate with low precipitation, averaging 268 mm (11 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 71 mm (2.8 in) of precipitation, recorded across 8 rainy days. In contrast, the driest month August brings less rainfall, with 0.2 mm (0.01 in) over 0 rainy days. For more details, please visit our Brea Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Brea
Seasonal changes in sunshine hours are quite dramatic in Brea. While July receives considerable daily sunshine with up to 12.3 hours, January marks the darkest time of the year, where sunshine is scarce with only 6.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Brea
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, June, October, November and December
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Brea
What is the best time to visit Brea?
January, February, March, April, May, June, October, November and December typically offer the most optimal weather in Brea. In contrast, July, August and September tend to have less optimal conditions. Brea has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in Brea?
Daytime highs range from 20°C (68°F) in December to 32°C (90°F) in August. Nighttime lows range from 8°C (46°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Brea get?
Annual rainfall is around 268 mm (11 in). December is the wettest month with 71 mm (2.8 in), while August is the driest with 0.2 mm (0.01 in).
How sunny is Brea?
Brea receives around 3,279 hours of sunshine per year. July is the sunniest month with 369 hours, while January is the cloudiest with just 198 hours. Overall, Brea enjoys abundant sunshine.
Brea 3-Day Forecast
Brea on the map
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