Best time to visit San Bruno, CA

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in San Bruno runs from March through November — 9 months of pleasant temperatures and modest rainfall.

January Wet
High
58.1°F
Low
45.3°F
Precip
6.14 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 9h 40m

February Wet
High
60.1°F
Low
46.0°F
Precip
6.48 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 10h 36m

March Good
High
61.4°F
Low
46.1°F
Precip
4.45 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 11h 45m

April Good
High
63.9°F
Low
47.6°F
Precip
2.36 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 59m

May Good
High
66.9°F
Low
49.4°F
Precip
1.00 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 2m

June Excellent
High
68.8°F
Low
50.8°F
Precip
0.25 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 14h 33m

July Excellent
High
69.4°F
Low
52.3°F
Precip
0.01 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 14h 22m

August Excellent
High
71.0°F
Low
53.3°F
Precip
0.08 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 13h 27m

September Excellent
High
72.3°F
Low
53.4°F
Precip
0.11 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 12h 14m

October Excellent
High
70.1°F
Low
52.3°F
Precip
1.50 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 11h 0m

November Good
High
64.1°F
Low
49.7°F
Precip
2.86 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 9h 56m

December Wet
High
58.8°F
Low
46.2°F
Precip
6.64 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 9h 25m

Looking for similar climates? See San Bruno's climate twins. Or jump straight to the full climate profile.