Best time to visit Brentwood, CA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Brentwood runs from September through June — 10 months of pleasant temperatures and modest rainfall.
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 39m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 35m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 11h 45m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 59m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 3m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 35m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 14h 23m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 13h 28m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 14m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 10h 59m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 54m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 23m
Looking for similar climates? See Brentwood's climate twins. Or jump straight to the full climate profile.