Brea weather by month

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Discover what to expect in Brea, CA, throughout the year. Whether you’re planning a move, a vacation, or just curious about the local climate, this guide breaks down temperatures, precipitation, and sunshine hours month‑by‑month, so you can pack the right gear and plan events with confidence.

January Weather in Brea

  • Average High: 70 °F (21 °C)

  • Average Low: 47 °F (8 °C)

  • Rainfall: 0.5 in (12 mm)

  • Chance of Rain: 5 %

  • Sunshine Hours: 6

January is the coldest month but still milder than inland California. Cool evenings are common, so layer your clothing.

February Weather in Brea

  • Average High: 71 °F (22 °C)

  • Average Low: 48 °F (9 °C)

  • Rainfall: 0.5 in (12 mm)

  • Chance of Rain: 5 %

  • Sunshine Hours: 7

A slightly warmer February offers more outdoor opportunities, though the occasional light shower may still arrive.

March Weather in Brea

  • Average High: 73 °F (23 °C)

  • Average Low: 50 °F (10 °C)

  • Rainfall: 0.6 in (15 mm)

  • Chance of Rain: 10 %

  • Sunshine Hours: 8

Springtime is in full swing. The balance of mild temperatures and fewer showers makes this a popular month for outdoor walks and picnics.

April Weather in Brea

  • Average High: 77 °F (25 °C)

  • Average Low: 54 °F (12 °C)

  • Rainfall: 0.5 in (13 mm)

  • Chance of Rain: 5 %

  • Sunshine Hours: 9

April begins to feel distinctly summer-like, with long days and moderate humidity.

May Weather in Brea

  • Average High: 82 °F (28 °C)

  • Average Low: 58 °F (14 °C)

  • Rainfall: 0.3 in (7 mm)

  • Chance of Rain: 3 %

  • Sunshine Hours: 10

Late spring is nearly dust‑free and sunny, making it perfect for outdoor sports and home gardening.

June Weather in Brea

  • Average High: 86 °F (30 °C)

  • Average Low: 62 °F (17 °C)

  • Rainfall: 0.1 in (3 mm)

  • Chance of Rain: 2 %

  • Sunshine Hours: 10

June marks the start of the dry season. Expect hot afternoons and calm nights.

July Weather in Brea

  • Average High: 88 °F (31 °C)

  • Average Low: 64 °F (18 °C)

  • Rainfall: 0.0 in (0 mm)

  • Chance of Rain: 0 %

  • Sunshine Hours: 11

Summertime peaks with consistent heat and minimal rainfall—ideal for beach trips and late‑afternoon strolls.

August Weather in Brea

  • Average High: 87 °F (31 °C)

  • Average Low: 64 °F (18 °C)

  • Rainfall: 0.0 in (0 mm)

  • Chance of Rain: 0 %

  • Sunshine Hours: 11

Continuing the summer heat, August remains a dry, sunny month, perfect for outdoor barbecues.

September Weather in Brea

  • Average High: 84 °F (29 °C)

  • Average Low: 61 °F (16 °C)

  • Rainfall: 0.2 in (5 mm)

  • Chance of Rain: 2 %

  • Sunshine Hours: 10

The temperatures start to soften; late‑summer evenings bring crisp air for evening walks.

October Weather in Brea

  • Average High: 78 °F (26 °C)

  • Average Low: 55 °F (13 °C)

  • Rainfall: 0.4 in (10 mm)

  • Chance of Rain: 5 %

  • Sunshine Hours: 9

Cooler nights and warmer days give autumn its signature feel—a fantastic time for hiking and sightseeing.

November Weather in Brea

  • Average High: 71 °F (21 °C)

  • Average Low: 47 °F (8 °C)

  • Rainfall: 0.5 in (12 mm)

  • Chance of Rain: 6 %

  • Sunshine Hours: 7

November sees the first signs of colder weather; showers may increase.

December Weather in Brea

  • Average High: 68 °F (20 °C)

  • Average Low: 45 °F (7 °C)

  • Rainfall: 0.4 in (10 mm)

  • Chance of Rain: 5 %

  • Sunshine Hours: 6

December feels crisp and bright‑sky, a great month for holiday light displays and cozy evenings.

Brea Weather by Month – Summary Table

Month Avg High (°F) Avg Low (°F) Avg Rainfall (in) Chance of Rain (%) Avg Sunshine (hrs)
January 70 47 0.5 5 6
February 71 48 0.5 5 7
March 73 50 0.6 10 8
April 77 54 0.5 5 9
May 82 58 0.3 3 10
June 86 62 0.1 2 10
July 88 64 0.0 0 11
August 87 64 0.0 0 11
September 84 61 0.2 2 10
October 78 55 0.4 5 9
November 71 47 0.5 6 7
December 68 45 0.4 5 6

Frequently Asked Questions (FAQ)

Q1: Is Brea’s climate considered Mediterranean?

A1: Yes, Brea experiences hot, dry summers and mild, wet winters—typical of Southern California’s Mediterranean climate.

Q2: When is the wettest time of year in Brea?

A2: The wettest months are January, February, and March, each averaging around 0.5 in of rainfall.

Q3: What’s the best time for outdoor sports?

A3: Late spring through early fall (May–September) offers the most consistent sunny days and comfortable temperatures.

Q4: Will I need a raincoat in Brea during winter?

A4: A light waterproof jacket is handy in January through March due to brief showers, but heavy rain is infrequent.

Q5: How high can temperatures reach in Brea during July?

A5: July highs typically peak near 88 °F (31 °C), though nighttime temperatures remain comfortable.

Resources

Use these tools to stay updated on weather changes, plan your wardrobe, and enjoy everything Brea has to offer no matter the season!

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