Where to Go for Great Weather
United States · Regional climate

Californiawhen to go

Regional slice of United States with its own temperature profile. Best months here: May · Sep · Oct.

Range
12–33 °C
Compare
+4.2°C vs. United States mean
Country
United States
TZ
America/New_York
Region match
Perfect match

Free-tier default preferences. Tune preferences on the map to reshape this score.

12-month climate · California

How the year moves in California

Ten years of ERA5, aggregated over California itself rather than over United States as a whole — the same series the month-by-month scores below are built from.

Temperature°C
Temperature · 12-month climatologyCalifornia, United States. Average daytime high by month in °C. Lowest in January (12.5), highest in July (33.3). Monthly means: 12.5, 14.2, 15.9, 20.7, 24.4, 30.0, 33.3, 32.6, 29.3, 23.9, 17.1, 12.7.
View data table
MonthAverage daytime high (°C)
January12.5
February14.2
March15.9
April20.7
May24.4
June30.0
July33.3
August32.6
September29.3
October23.9
November17.1
December12.7
Rainfallmm
Rainfall · 12-month climatologyCalifornia, United States. Rainfall by month in mm. Lowest in July (5), highest in January (114). Monthly means: 114, 92, 103, 40, 27, 8, 5, 9, 13, 29, 61, 96.
View data table
MonthRainfall (mm)
January114
February92
March103
April40
May27
June8
July5
August9
September13
October29
November61
December96
Sunshinehr / day
Sunshine · 12-month climatologyCalifornia, United States. Sunshine hours by month in hr / day. Lowest in December (5.8), highest in June (11.5). Monthly means: 6.1, 7.6, 8.2, 9.9, 10.6, 11.5, 11.4, 10.7, 9.8, 8.8, 7.1, 5.8.
View data table
MonthSunshine hours (hr / day)
January6.1
February7.6
March8.2
April9.9
May10.6
June11.5
July11.4
August10.7
September9.8
October8.8
November7.1
December5.8
What’s open · year round

Things to do in California

  • Closed
    Glacier Point Road, Yosemite

    Closed December–March · limited April–May, November

    Source: nps.gov

  • Closed
    Tioga Road, Yosemite

    Closed December–April · limited May, November · at its best July–September

    Sources: nps.gov, nps.gov

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

Month by month · California

Pick your window

Other regions · United States

Nearby and comparable

Safety · 4 governments

What the governments say about United States

Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 4 governments · Advisory last changed
See breakdown by country
AU

Exercise normal precautions

Changed Checked www.smartraveller.gov.au
CA

Exercise normal precautions

Changed Checked travel.gc.ca
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
Start free

Plan a trip to California.

No card required. Upgrade to Premium whenever you want more depth.

Open the mapTry Premium · €2.99