United States · 1991–2020

Best time to visit
Daly City.

September leads for comfortable weather in Daly City: typically 18.1°C by day, 12.4°C at night, with 2 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high18.1°C

Typical low12.4°C

Rain in September2 mm

Comfort

September

September · October · August

76climate match

Beach

September

September · October · August

43climate match

Outdoors

October

October · September · August

94climate match

The weakest month is December, scoring 38 against September’s 76 — days reach only 14.7°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

4014.6° / 7.3°

Feb

4415.5° / 8°

Mar

5215.8° / 8.6°

Apr

5915.4° / 9.1°

May

6215.2° / 10.3°

Jun

6615.7° / 11.1°

Jul

6916.2° / 12.1°

Aug

7317° / 12.8°

Sep

7618.1° / 12.4°

Oct

7618.7° / 11.4°

Nov

6217.2° / 9.4°

Dec

3814.7° / 7.3°

Monthly climate evidence for Daly City — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 17 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14.6°C	7.3°C	100 mm	9.3	11.9°C	9 h 49	40	Strong coverage
February	15.5°C	8°C	104 mm	9.2	12.0°C	10 h 44	44	Strong coverage
March	15.8°C	8.6°C	70 mm	8	12.1°C	11 h 50	52	Strong coverage
April	15.4°C	9.1°C	35 mm	4.8	11.6°C	13 h 07	59	Strong coverage
May	15.2°C	10.3°C	16 mm	2.5	11.8°C	14 h 11	62	Strong coverage
June	15.7°C	11.1°C	3 mm	0.7	12.4°C	14 h 45	66	Strong coverage
July	16.2°C	12.1°C	0 mm	0.1	13.6°C	14 h 32	69	Strong coverage
August	17°C	12.8°C	1 mm	0.2	14.4°C	13 h 37	73	Strong coverage
September	18.1°C	12.4°C	2 mm	0.4	14.6°C	12 h 23	76	Strong coverage
October	18.7°C	11.4°C	20 mm	2.2	13.9°C	11 h 09	76	Strong coverage
November	17.2°C	9.4°C	58 mm	5.5	13.1°C	10 h 05	62	Strong coverage
December	14.7°C	7.3°C	114 mm	9.6	12.2°C	9 h 34	38	Strong coverage

What has changed

Daly City runs -0.3°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

+0.9

Feb

+0.4

Mar

+0.5

Apr

-0.4

May

-1.5

Jun

-1.9

Jul

-1.9

Aug

-1.3

Sep

-0.7

Oct

+0.1

Nov

+1.0

Dec

+1.1

September daytime highs, 2011–2023. Last recorded: 17.1°C.

Records at SAN FRANCISCO OCEANSIDE, 1958–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.1°C8 Jan 1962	-1.7°C9 Jan 1981	94 mm8 Jan 2018	259 mm1967 · driest 0 mm in 2015	63
February	25.0°C12 Feb 1996	-1.7°C26 Feb 1960	99 mm2 Feb 1998	353 mm1998 · driest 0 mm in 2020	65
March	27.2°C9 Mar 2004	-3.9°C20 Mar 2023	64 mm5 Mar 1992	247 mm1983 · driest 0 mm in 2009	66
April	29.4°C6 Apr 1989	-2.8°C5 Apr 2018	51 mm6 Apr 2018	133 mm1967 · driest 0 mm in 1979	64
May	27.8°C12 May 1976	1.7°C5 May 2017	37 mm15 May 1996	94 mm1998 · driest 0 mm in 2023	66
June	27.8°C27 Jun 1976	2.2°C11 Jun 1965	42 mm2 Jun 1967	61 mm2011 · driest 0 mm in 1959	63
July	29.4°C3 Jul 1970	4.4°C28 Jul 2021	13 mm8 Jul 1974	14 mm1974 · driest 0 mm in 1983	64
August	29.4°C14 Aug 1991	4.4°C28 Aug 2018	31 mm11 Aug 1965	31 mm1965 · driest 0 mm in 2006	63
September	35.6°C28 Sep 1966	3.3°C20 Sep 2021	50 mm18 Sep 1959	52 mm1959 · driest 0 mm in 2010	63
October	35.6°C3 Oct 2014	1.7°C21 Oct 2020	80 mm13 Oct 1962	202 mm1962 · driest 0 mm in 2015	62
November	32.2°C1 Nov 2019	-3.3°C21 Nov 1982	54 mm13 Nov 1972	185 mm1973 · driest 0 mm in 2023	62
December	22.8°C15 Dec 1980	-5.0°C6 Dec 2017	110 mm11 Dec 2014	309 mm2014 · driest 0 mm in 1989	66

Typical days per month at SAN FRANCISCO OCEANSIDE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	<1	3
February	<1	0	<1	3
March	<1	0	0	3
April	<1	0	<1	1
May	<1	0	0	<1
June	0	0	0	<1
July	0	0	0	0
August	<1	0	0	0
September	1	<1	0	0
October	3	<1	0	<1
November	1	<1	<1	2
December	0	0	<1	3

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 80); on 2011–2025 it is October (78). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in SAN FRANCISCO OCEANSIDE’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	4%	28%	10%	36%	13.2–16.1°C
February	10%	30%	11%	37%	13.9–17.4°C
March	10%	26%	9%	29%	14.4–17.8°C
April	7%	14%	4%	13%	13.9–17.3°C
May	6%	7%	<1%	4%	14.0–17.4°C
June	7%	2%	<1%	<1%	14.9–18.4°C
July	9%	<1%	0%	0%	15.4–18.8°C
August	15%	<1%	<1%	<1%	16.2–19.0°C
September	27%	2%	<1%	<1%	16.6–21.4°C
October	29%	8%	3%	8%	17.0–20.9°C
November	18%	20%	8%	24%	15.5–18.8°C
December	3%	29%	11%	36%	12.8–16.2°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.

1959Each stripe is one year’s mean temperature against the 45-year average. Warmest: 2014. Coolest: 1960.2018

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5341430
NOAA station: USC00047767 · SAN FRANCISCO OCEANSIDE
Station distance: 4.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 37.71°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 17 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 SAN FRANCISCO OCEANSIDE is what differs

Parkside→Broadmoor→Colma→Broadmoor Village→Doelger City→Eldton→

Or put two places side by side: Daly City vs Parkside

Best time to visitDaly City.

September

September

October

The whole year,without the guesswork.

Daly City runs -0.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Daly City.

The whole year,
without the guesswork.

Daly City runs -0.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.