United States · 1991–2020

Best time to visit
De Anza Trailer Harbor.

October leads for comfortable weather in De Anza Trailer Harbor: typically 21.3°C by day, 15.3°C at night, with 16 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high21.3°C

Typical low15.3°C

Rain in October16 mm

Comfort

October

October · August · September

91climate match

Beach

August

August · July · September

76climate match

Outdoors

November

November · April · March

95climate match

The weakest month is January, scoring 64 against October’s 91 — days reach only 17.3°C, 7° 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

6417.3° / 9.1°

Feb

6417.5° / 9.9°

Mar

7518° / 11.8°

Apr

7918.8° / 12.8°

May

8519.6° / 14.6°

Jun

8620.5° / 16.2°

Jul

8922.5° / 18.4°

Aug

9023° / 18.9°

Sep

9022.6° / 18°

Oct

9121.3° / 15.3°

Nov

7819.2° / 11.6°

Dec

6517.2° / 9°

Monthly climate evidence for De Anza Trailer Harbor — 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	17.3°C	9.1°C	44 mm	4.6	15.3°C	10 h 12	64	Good coverage
February	17.5°C	9.9°C	60 mm	5.3	15.2°C	10 h 58	64	Good coverage
March	18°C	11.8°C	19 mm	3	15.5°C	11 h 53	75	Good coverage
April	18.8°C	12.8°C	17 mm	2.4	16.3°C	12 h 57	79	Good coverage
May	19.6°C	14.6°C	6 mm	1.3	17.5°C	13 h 50	85	Good coverage
June	20.5°C	16.2°C	1 mm	0.2	18.8°C	14 h 18	86	Good coverage
July	22.5°C	18.4°C	2 mm	0.2	20.5°C	14 h 07	89	Good coverage
August	23°C	18.9°C	0 mm	0	21.3°C	13 h 21	90	Good coverage
September	22.6°C	18°C	3 mm	0.6	20.9°C	12 h 20	90	Good coverage
October	21.3°C	15.3°C	16 mm	1.9	19.6°C	11 h 19	91	Good coverage
November	19.2°C	11.6°C	21 mm	2.6	17.7°C	10 h 26	78	Good coverage
December	17.2°C	9°C	40 mm	4.3	16.0°C	10 h	65	Good coverage

Records at SAN DIEGO SEAWORLD, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C15 Jan 2021	0.0°C25 Jan 2012	56 mm1 Jan 2026	144 mm2005 · driest 1 mm in 2003	24
February	29.4°C17 Feb 2007	2.8°C5 Feb 2020	89 mm21 Feb 2005	191 mm2005 · driest 0 mm in 2016	24
March	30.6°C12 Mar 2007	4.4°C2 Mar 2023	45 mm30 Mar 2024	84 mm2023 · driest 0 mm in 2026	22
April	29.4°C28 Apr 2008	6.7°C5 Apr 2023	31 mm10 Apr 2020	74 mm2020 · driest 0 mm in 2008	23
May	29.4°C2 May 2004	8.9°C1 May 1999	14 mm7 May 2017	25 mm2017 · driest 0 mm in 2020	26
June	28.9°C21 Jun 2008	11.7°C2 Jun 2011	3 mm29 Jun 2020	4 mm2020 · driest 0 mm in 2005	25
July	30.0°C7 Jul 2018	13.3°C4 Jul 2009	23 mm18 Jul 2015	36 mm2015 · driest 0 mm in 2023	25
August	32.2°C27 Aug 2009	13.9°C31 Aug 2010	42 mm20 Aug 2023	43 mm2023 · driest 0 mm in 2019	25
September	32.8°C6 Sep 2020	13.3°C21 Sep 2007	27 mm15 Sep 2015	31 mm2015 · driest 0 mm in 2018	25
October	31.1°C9 Oct 2015	6.7°C31 Oct 2019	96 mm27 Oct 2004	147 mm2004 · driest 0 mm in 2019	24
November	31.1°C9 Nov 2016	3.3°C30 Nov 2010	41 mm30 Nov 2007	79 mm2011 · driest 0 mm in 2021	24
December	27.2°C7 Dec 2014	3.3°C28 Dec 2003	58 mm13 Dec 2012	111 mm2016 · driest 1 mm in 2017	25

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

How often, not how much — every day in SAN DIEGO SEAWORLD’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	17%	15%	4%	14%	15.9–19.1°C
February	17%	18%	6%	18%	15.9–19.4°C
March	19%	12%	3%	7%	16.2–20.9°C
April	25%	7%	1%	3%	16.9–20.4°C
May	37%	4%	<1%	2%	18.6–20.8°C
June	72%	<1%	0%	0%	19.4–21.7°C
July	97%	<1%	<1%	<1%	21.5–23.8°C
August	98%	<1%	<1%	0%	21.9–24.2°C
September	91%	2%	<1%	<1%	20.9–24.4°C
October	70%	6%	2%	3%	19.6–23.3°C
November	32%	9%	2%	6%	17.8–20.5°C
December	15%	14%	5%	13%	15.8–19.0°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5341832
NOAA station: USC00047741 · SAN DIEGO SEAWORLD
Station distance: 3.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 32.79°, 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 DIEGO SEAWORLD is what differs

La Jolla→Bay Park→Bayside Village→Campland on the Bay Trailer Park→Clairemont→Easter Cross→

Or put two places side by side: De Anza Trailer Harbor vs La Jolla

Best time to visitDe Anza Trailer Harbor.