United States · 1991–2020

Best time to visit
Oakland.

September leads for comfortable weather in Oakland: typically 23.7°C by day, 14.3°C at night, with 3 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.7°C

Typical low14.3°C

Rain in September3 mm

Comfort

September

September · August · October

98climate match

Beach

September

September · August · July

65climate match

Outdoors

May

May · April · June

96climate match

The weakest month is December, scoring 41 against September’s 98 — days reach only 15.2°C, 9° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

4215.4° / 7.5°

Feb

5016.8° / 8.6°

Mar

6018.2° / 9.6°

Apr

7419° / 10.4°

May

8220.2° / 11.9°

Jun

9022° / 13.2°

Jul

9121.9° / 13.9°

Aug

9522.8° / 14.5°

Sep

9823.7° / 14.3°

Oct

9222.6° / 12.9°

Nov

6718.6° / 9.8°

Dec

4115.2° / 7.5°

Monthly climate evidence for Oakland — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 32 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	15.4°C	7.5°C	108 mm	9	11.6°C	9 h 49	42	Strong coverage
February	16.8°C	8.6°C	107 mm	8.4	11.9°C	10 h 44	50	Strong coverage
March	18.2°C	9.6°C	80 mm	7.9	12.0°C	11 h 50	60	Strong coverage
April	19°C	10.4°C	33 mm	4.5	11.5°C	13 h 07	74	Strong coverage
May	20.2°C	11.9°C	20 mm	2.9	11.7°C	14 h 11	82	Strong coverage
June	22°C	13.2°C	5 mm	0.6	12.1°C	14 h 46	90	Strong coverage
July	21.9°C	13.9°C	0 mm	0	13.4°C	14 h 32	91	Strong coverage
August	22.8°C	14.5°C	1 mm	0.2	14.2°C	13 h 37	95	Strong coverage
September	23.7°C	14.3°C	3 mm	0.5	14.4°C	12 h 23	98	Strong coverage
October	22.6°C	12.9°C	29 mm	2.5	13.7°C	11 h 09	92	Strong coverage
November	18.6°C	9.8°C	62 mm	5.2	12.9°C	10 h 05	67	Strong coverage
December	15.2°C	7.5°C	119 mm	8.6	12.0°C	9 h 33	41	Strong coverage

What has changed

Oakland runs +0.6°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+2.6

Feb

+1.0

Mar

+0.6

Apr

+0.2

May

-0.6

Jun

-0.2

Jul

-1.0

Aug

+0.1

Sep

0.0

Oct

+1.3

Nov

+1.6

Dec

+2.0

September daytime highs, 2011–2025. Last recorded: 24.2°C.

Records at OAKLAND MUSEUM, 1970–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.1°C18 Jan 2021	-1.1°C30 Jan 1975	120 mm4 Jan 1982	316 mm1998 · driest 0 mm in 2015	54
February	28.3°C27 Feb 2026	-1.7°C5 Feb 1976	78 mm13 Feb 2000	385 mm1998 · driest 0 mm in 2020	51
March	32.8°C20 Mar 2026	1.1°C3 Mar 1976	73 mm31 Mar 1982	250 mm1983 · driest 1 mm in 1988	53
April	36.1°C29 Apr 1981	2.8°C1 Apr 1976	53 mm1 Apr 1974	105 mm1982 · driest 0 mm in 1977	52
May	40.6°C12 May 1976	6.1°C5 May 1975	38 mm27 May 1990	76 mm1998 · driest 0 mm in 2014	52
June	40.0°C26 Jun 1973	8.9°C3 Jun 1976	35 mm4 Jun 2011	69 mm2011 · driest 0 mm in 1977	50
July	39.4°C13 Jul 1972	10.6°C22 Jul 2008	24 mm8 Jul 1974	30 mm1974 · driest 0 mm in 2013	51
August	37.8°C14 Aug 2020	10.0°C17 Aug 1977	25 mm19 Aug 1997	32 mm1997 · driest 0 mm in 1985	53
September	42.8°C14 Sep 1971	8.9°C28 Sep 1986	20 mm16 Sep 1989	39 mm1986 · driest 0 mm in 2011	52
October	39.4°C2 Oct 1980	6.1°C6 Oct 2007	109 mm24 Oct 2021	176 mm2021 · driest 0 mm in 2003	53
November	28.9°C5 Nov 2012	2.2°C29 Nov 1975	105 mm5 Nov 1994	246 mm1973 · driest 5 mm in 2020	54
December	23.9°C7 Dec 1979	-3.3°C9 Dec 1972	121 mm31 Dec 2022	334 mm2022 · driest 0 mm in 1989	52

Typical days per month at OAKLAND MUSEUM, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	<1	0	3
February	<1	0	4
March	2	0	3
April	3	<1	1
May	4	1	<1
June	6	1	<1
July	5	<1	0
August	7	1	0
September	10	3	<1
October	9	2	<1
November	2	0	2
December	0	0	4

How often, not how much — every day in OAKLAND MUSEUM’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	7%	27%	11%	33%	13.0–16.9°C
February	18%	30%	13%	40%	15.0–18.5°C
March	26%	27%	11%	29%	15.5–20.0°C
April	36%	15%	4%	12%	17.7–20.9°C
May	48%	7%	1%	5%	18.4–22.6°C
June	70%	2%	<1%	<1%	20.1–23.5°C
July	80%	<1%	<1%	0%	20.8–24.0°C
August	87%	<1%	<1%	<1%	21.6–24.4°C
September	84%	3%	<1%	1%	21.4–26.4°C
October	69%	9%	3%	8%	20.9–24.4°C
November	29%	20%	8%	24%	16.3–19.9°C
December	3%	27%	11%	36%	12.8–16.5°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1971Each stripe is one year’s mean temperature against the 38-year average. Warmest: 1992. Coolest: 1975.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5378538
NOAA station: USC00046336 · OAKLAND MUSEUM
Station distance: 0.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 37.80°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 32 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from OAKLAND MUSEUM is what differs

Alameda→Emeryville→Piedmont→Chinatown→Campbell Village→Canyon→

Or put two places side by side: Oakland vs Alameda

Best time to visitOakland.

September

September

May

The whole year,without the guesswork.

Oakland runs +0.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Oakland.

The whole year,
without the guesswork.

Oakland runs +0.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.