United States · 1991–2020

Best time to visit
Tustin Legacy.

June leads for comfortable weather in Tustin Legacy: typically 23.7°C by day, 16.7°C at night, with 0 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high23.7°C

Typical low16.7°C

Rain in June0 mm

Comfort

June

June · October · May

96climate match

Beach

August

August · September · July

89climate match

Outdoors

March

March · January · April

96climate match

The weakest month is February, scoring 70 against June’s 96 — days reach only 19.5°C, 4° below the 24°C the score treats as ideal, and nights drop to 9.5°C.

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

7320° / 9°

Feb

7019.5° / 9.5°

Mar

8020.2° / 11.2°

Apr

8621.2° / 12.6°

May

9422.2° / 14.8°

Jun

9623.7° / 16.7°

Jul

8626.3° / 18.7°

Aug

8327.1° / 19.1°

Sep

8427.1° / 18.3°

Oct

9525.2° / 15.7°

Nov

8922.6° / 11.7°

Dec

7019.5° / 8.8°

Monthly climate evidence for Tustin Legacy — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 10 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	20°C	9°C	49 mm	3.8	15.1°C	10 h 08	73	Good coverage
February	19.5°C	9.5°C	55 mm	5.2	15.0°C	10 h 55	70	Good coverage
March	20.2°C	11.2°C	27 mm	3.9	15.2°C	11 h 52	80	Good coverage
April	21.2°C	12.6°C	14 mm	2.5	15.7°C	12 h 58	86	Good coverage
May	22.2°C	14.8°C	5 mm	1	17.0°C	13 h 53	94	Good coverage
June	23.7°C	16.7°C	0 mm	0	18.5°C	14 h 23	96	Good coverage
July	26.3°C	18.7°C	2 mm	0.5	20.2°C	14 h 11	86	Good coverage
August	27.1°C	19.1°C	0 mm	0	20.7°C	13 h 24	83	Good coverage
September	27.1°C	18.3°C	3 mm	0.4	20.5°C	12 h 20	84	Good coverage
October	25.2°C	15.7°C	17 mm	1.9	19.3°C	11 h 17	95	Good coverage
November	22.6°C	11.7°C	19 mm	2.3	17.6°C	10 h 22	89	Good coverage
December	19.5°C	8.8°C	50 mm	4.5	15.8°C	9 h 55	70	Good coverage

Records at SANTA ANA JOHN WAYNE AP, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	32.2°C31 Jan 2003	0.6°C14 Jan 2007	58 mm22 Jan 2017	161 mm2010 · driest 1 mm in 2014	27
February	32.8°C9 Feb 2022	2.2°C2 Feb 2016	54 mm12 Feb 2001	177 mm2024 · driest 0 mm in 1999	28
March	35.0°C17 Mar 2026	4.4°C2 Mar 2023	56 mm15 Mar 2003	141 mm2023 · driest 1 mm in 2026	28
April	36.7°C20 Apr 2009	5.0°C10 Apr 1999	21 mm12 Apr 2010	69 mm2020 · driest 0 mm in 2013	28
May	36.7°C2 May 2004	9.4°C1 May 1999	15 mm22 May 2006	27 mm2015 · driest 0 mm in 2004	28
June	35.6°C20 Jun 2016	12.2°C2 Jun 2011	3 mm2 Jun 1999	3 mm1999 · driest 0 mm in 2015	28
July	37.2°C22 Jul 2006	13.9°C28 Jul 2007	8 mm15 Jul 1999	20 mm1999 · driest 0 mm in 2020	28
August	37.8°C18 Aug 2020	14.4°C27 Aug 2003	51 mm20 Aug 2023	54 mm2023 · driest 0 mm in 2022	27
September	43.3°C27 Sep 2010	13.3°C21 Sep 2007	38 mm15 Sep 2015	45 mm2015 · driest 0 mm in 2023	27
October	41.1°C24 Oct 2017	7.8°C29 Oct 2009	68 mm20 Oct 2004	157 mm2004 · driest 0 mm in 2019	27
November	37.8°C3 Nov 2010	2.8°C30 Nov 2004	41 mm15 Nov 2025	108 mm2025 · driest 0 mm in 2017	27
December	32.2°C12 Dec 2010	2.2°C31 Dec 2010	82 mm6 Dec 2018	234 mm2010 · driest 0 mm in 2024	27

Typical days per month at SANTA ANA JOHN WAYNE AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	5	<1	2
February	4	<1	2
March	4	<1	<1
April	4	1	<1
May	5	1	0
June	8	1	0
July	21	3	0
August	25	6	0
September	21	7	0
October	15	5	<1
November	8	2	<1
December	3	<1	2

How often, not how much — every day in SANTA ANA JOHN WAYNE AP’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	44%	13%	6%	11%	17.9–22.4°C
February	41%	18%	6%	22%	17.8–22.6°C
March	45%	13%	4%	10%	18.4–22.1°C
April	60%	8%	1%	4%	19.3–22.8°C
May	84%	3%	<1%	<1%	20.6–23.7°C
June	98%	<1%	0%	0%	22.4–25.4°C
July	99%	1%	0%	<1%	25.0–27.7°C
August	100%	<1%	<1%	0%	25.6–28.7°C
September	99%	1%	<1%	<1%	25.4–29.7°C
October	91%	6%	1%	4%	22.7–27.8°C
November	74%	8%	2%	4%	20.3–24.4°C
December	40%	15%	5%	13%	17.8–21.4°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.

2000Each stripe is one year’s mean temperature against the 26-year average. Warmest: 2014. Coolest: 2002.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 12750416
NOAA station: USW00093184 · SANTA ANA JOHN WAYNE AP
Station distance: 4.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 33.70°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 10 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 SANTA ANA JOHN WAYNE AP is what differs

Irvine→Huntington Beach→Fountain Valley→Westpark→UC Irvine→Turtle Rock→

Or put two places side by side: Tustin Legacy vs Irvine

Best time to visitTustin Legacy.