What is the hottest month in Irvine?

August — average highs around 83° with lows near 64°.

What is the coldest month in Irvine?

February, when nights typically drop to 48° and days top out near 66°.

What is the rainiest month in Irvine?

March, averaging about 3.2 in of precipitation; the driest is July at roughly 0.0 in.

How warm is Irvine over the year?

The annual mean is 64°, with about 17 in of precipitation in a typical year (1991-2020 normals).

Irvine Climate — Monthly Normals 1991-2020

Climate in Irvine

The typical year in Irvine (California), from 1991-2020 normals. For what's happening now, see the current forecast; a month ahead — the 30-day outlook.

Annual mean temp

17.9°C

average across 12 months

Annual precipitation

427 mm

yearly total

Warmest month

Aug

⌀ max 28°C

Coldest month

Feb

⌀ min 8°C

Temperatures by month

typical high (orange) · typical low (blue)

Jan

48° … 66°

Feb

48° … 66°

Mar

49° … 65°

Apr

53° … 70°

May

56° … 72°

Jun

59° … 76°

Jul

63° … 81°

Aug

64° … 83°

Sep

63° … 82°

Oct

59° … 78°

Nov

53° … 72°

Dec

49° … 65°

Precipitation by month

monthly totals across the year

Jan

68 mm

Feb

78 mm

Mar

80 mm

Apr

22 mm

May

13 mm

Jun

6 mm

Jul

1 mm

Aug

11 mm

Sep

14 mm

Oct

16 mm

Nov

41 mm

Dec

77 mm

The short version

RegionCalifornia

Latitude33.6695°N

Annual mean17.9°C

Annual precipitation427 mm

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Source · 1991-2020 normals

Irvine, CA Climate