Tustin weather in April

In April, Tustin sees average daytime highs of 69°F and overnight lows near 53°F, with 0.9 in of rain across 3.1 wet days and about 12.8 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 71°F by the end. The sky is clear or mostly clear about 56% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 18 min by month's end. Set against the rest of the year, April is Tustin's 8th-clearest and 2nd-windiest month. For the whole year in context, see Tustin's year-round climate.

Daytime high
69°
8th warmest
Overnight low
53°
6th coldest
Rainfall
0.9 in
3.1 wet days
Daylight
12 h 48 min
5:26 AM – 6:17 PM
Cloud cover
37%
8th clearest
Wind
5 mph
2nd windiest
Solar energy
6.55 kWh/m²
Travel score
7.8
out of 10

Tustin is city in Orange County, California, United States.

Density
2,800/km²
people per km²
Founded
1927

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 67°F in the first days to 71°F by the end.

A typical April day in Tustin reaches about 69°F in the afternoon and slips back to 53°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 79°F. Set against its neighbours, April runs about 3°F warmer than March and about 3°F cooler than May.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16751
26751
36752
46752
56752
66752
76752
86752
96852
106852
116852
126852
136852
146853
156953
166953
176953
186953
196953
206953
217054
227054
237054
247054
257054
267155
277155
287155
297155
307155

Tustin weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan64° / 47°3.15.7106.7
Feb64° / 48°3.66.410.76.5
Mar66° / 51°2.2611.76.9
Apr69° / 53°0.93.112.87.8
May71° / 57°0.41.713.78.4
Jun76° / 60°0.10.314.29.2
Jul81° / 64°0.10.5148.8
Aug83° / 65°0.00.213.38.3
Sep81° / 64°0.20.812.28.6
Oct76° / 59°0.72.211.28.8
Nov70° / 52°0.92.610.28.1
Dec64° / 47°2.259.86.7

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26733
36733
46832
56832
66931
76931
86931
96931
107030
117129
127129
137129
147129
157228
167327
177327
187327
197327
207327
217426
227426
237426
247525
257525
267525
277525
287426
297426
307426

Chance of precipitation in April

Any precipitation

Tustin gets around 0.9 in of rain over 3.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 13% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
113
213
313
412
512
612
712
812
911
1011
1111
1211
1311
1410
1510
1610
1710
1810
1910
209
219
229
239
249
259
268
278
288
298
308

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19550
29550
39550
49460
59460
69460
79460
89460
99460
109460
119370
129370
139370
149181
159181
169181
179091
1889101
1988102
2087112
2186122
2285132
2385132
2484142
2583152
2682162
2781172
2880182
2979192
3078202

Wind in April

Winds average 5 mph in April.

Across April, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 5:47 AM to 5:10 AM, and sunset from 6:05 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:476:05
212.35:456:06
312.45:446:07
412.45:426:08
512.55:416:08
612.55:406:09
712.55:386:10
812.65:376:11
912.65:366:11
1012.65:346:12
1112.75:336:13
1212.75:326:14
1312.75:306:14
1412.85:296:15
1512.85:286:16
1612.85:266:17
1712.95:256:17
1812.95:246:18
1912.95:236:19
2013.05:216:20
2113.05:206:21
2213.05:196:21
2313.15:186:22
2413.15:176:23
2513.15:156:24
2613.25:146:24
2713.25:136:25
2813.25:126:26
2913.35:116:27
3013.35:106:28

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.55 kWh/m².

For context, solar energy here swings from a low near 2.97 kWh/m² to a high of 7.88 kWh/m² in June across the year — April's 6.55 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.3Intense
116.4Intense
126.4Intense
136.5Intense
146.5Intense
156.5Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
297.0Intense
307.0Intense
Planning a trip in April

Is April a good time to visit Tustin?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.8
Sightseeing
8th-best month of the year
4.3
Beach & pool
8th-best month of the year

April is one of the better times to visit Tustin for general sightseeing.

What to pack for Tustin in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Tustin sees daytime highs around 69°F and nights near 53°F. Pack sun protection. About 3 days see rain.

sun protection

Sea temperature near Tustin in April

The nearest coast averages about 60°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 9 mi away) is warmest in August at about 69°F and coldest in February near 59°F.

It's comfortable for a long swim from Jul 13 to Sep 28 — about 2.6 months when the water holds above 68°F.

60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb59Cool
Mar59Cool
Apr60Cool
May63Cool
Jun65Cool
Jul68Refreshing
Aug69Refreshing
Sep69Refreshing
Oct67Cool
Nov64Cool
Dec60Cool

UV index in Tustin in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tustin peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 17UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Tustin in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Tustin is worst in September — around 49 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (May, 12 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1447 µg/m³May 1713 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar19Moderate
Apr17Moderate
May12Moderate
Jun17Moderate
Jul19Moderate
Aug32Moderate
Sep49Poor
Oct21Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Tustin?

Tustin sits at 33.7°N, 117.8°W, 141 ft above sea level, in United States. The nearest listed city is North Tustin, 2.5 mi away.

Topography around Tustin

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Tustin.

Within 2 miles, the terrain around Tustin has only modest variations in elevation — a maximum elevation change of 220 ft around an average of 141 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,585 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,010 ft.

The land around Tustin is covered by artificial surfaces (90%) within 2 miles, artificial surfaces (64%) within 10 miles, and water (32%) and artificial surfaces (25%) within 50 miles.

2 miles
220 ft
10 miles
2,585 ft
50 miles
10,010 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: North Tustin 2.5 mi · Santa Ana 2.5 mi · Tustin Legacy 3.1 mi · Orange 3.1 mi · Westpark 4.3 mi · Northwood 4.3 mi · El Camino Real 4.3 mi · Woodbridge 5.0 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tustin (33.7458°, -117.8262°, elevation 141 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).