Fallbrook weather in April

In April, Fallbrook sees average daytime highs of 69°F and overnight lows near 52°F, with 1.0 in of rain across 3.5 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 72°F by the end. The sky is clear or mostly clear about 55% 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 Fallbrook's 8th-clearest and 1st-windiest month. For the whole year in context, see Fallbrook's year-round climate.

Daytime high
69°
8th warmest
Overnight low
52°
6th coldest
Rainfall
1.0 in
3.5 wet days
Daylight
12 h 48 min
5:24 AM – 6:14 PM
Cloud cover
38%
8th clearest
Wind
5 mph
1st windiest
Solar energy
6.74 kWh/m²
Travel score
7.8
out of 10

Fallbrook is census-designated place in San Diego County, California, United States.

Density
671/km²
people per km²
Founded
1869

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 72°F by the end.

A typical April day in Fallbrook reaches about 69°F in the afternoon and slips back to 52°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 80°F. Set against its neighbours, April runs about 3°F warmer than March and about 4°F cooler than May.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16750
26750
36750
46750
56750
66750
76750
86850
96851
106851
116851
126851
136951
146951
156951
166951
176952
187052
197052
207052
217052
227153
237153
247153
257153
267153
277154
287254
297254
307254

Fallbrook 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° / 45°2.75.8106.5
Feb64° / 46°3.4710.86.2
Mar66° / 49°2.0611.76.9
Apr69° / 52°1.03.512.87.8
May73° / 56°0.42.113.78.5
Jun79° / 60°0.10.614.28.9
Jul85° / 65°0.20.8147.2
Aug86° / 67°0.10.613.26.6
Sep84° / 64°0.2112.27.5
Oct77° / 58°0.72.711.28.6
Nov70° / 50°1.03.110.38.0
Dec63° / 45°2.04.99.86.6

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% 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 29%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16634
26634
36634
46634
56634
66733
76733
86733
96733
106832
116832
126832
136931
147030
157129
167129
177228
187327
197327
207327
217426
227426
237525
247624
257624
267624
277624
287624
297624
307624

Chance of precipitation in April

Any precipitation

Fallbrook gets around 1.0 in of rain over 3.5 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 12% and peaks near 15% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
115
214
314
414
513
613
713
813
913
1012
1112
1212
1312
1411
1511
1611
1711
1811
1911
2011
2110
2210
2310
2410
2510
2610
2710
2810
2910
3010

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79820
89820
99820
109820
119820
129730
139730
149640
159640
169550
179550
189460
199460
209370
219370
229280
239190
249190
2590100
2690100
2790100
2889110
2988111
3087121

Wind in April

Winds average 5 mph in April, the windiest month of the year.

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 5:44 AM to 5:08 AM, and sunset from 6:03 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:446:03
212.35:436:04
312.45:426:04
412.45:406:05
512.45:396:06
612.55:386:07
712.55:366:07
812.65:356:08
912.65:346:09
1012.65:326:10
1112.75:316:10
1212.75:306:11
1312.75:286:12
1412.85:276:13
1512.85:266:13
1612.85:246:14
1712.95:236:15
1812.95:226:16
1912.95:216:16
2013.05:196:17
2113.05:186:18
2213.05:176:19
2313.15:166:19
2413.15:156:20
2513.15:146:21
2613.25:126:22
2713.25:116:22
2813.25:106:23
2913.25:096:24
3013.35:086:25

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.74 kWh/m².

For context, solar energy here swings from a low near 3.06 kWh/m² to a high of 8.04 kWh/m² in June across the year — April's 6.74 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.3Intense
56.3Intense
66.4Intense
76.4Intense
86.5Intense
96.5Intense
106.5Intense
116.6Intense
126.6Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.9Intense
196.9Intense
206.9Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.1Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.2Intense
Planning a trip in April

Is April a good time to visit Fallbrook?

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

7.8
Sightseeing
5th-best month of the year
4.5
Beach & pool
8th-best month of the year

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

What to pack for Fallbrook in April

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

In April, Fallbrook sees daytime highs around 69°F and nights near 52°F. Pack sun protection. About 4 days see rain.

sun protection

Sea temperature near Fallbrook in April

The nearest coast averages about 61°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 19 mi away) is warmest in August at about 71°F and coldest in January near 59°F.

It's comfortable for a long swim from Jul 5 to Oct 7 — about 3.1 months when the water holds above 68°F.

60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb59Cool
Mar60Cool
Apr61Cool
May64Cool
Jun66Cool
Jul69Refreshing
Aug71Refreshing
Sep70Refreshing
Oct67Cool
Nov64Cool
Dec61Cool

UV index in Fallbrook in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fallbrook peaks around July 11 at about 11 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeVery highHighModerateJul 11UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Fallbrook 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 Fallbrook is worst in September — around 40 µg/m³ PM2.5 (poor), about 5.4× the cleanest month (December, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1437 µg/m³Dec 207 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr10Good
May8Good
Jun19Moderate
Jul12Moderate
Aug20Moderate
Sep40Poor
Oct10Good
Nov8Good
Dec7Good
Location & terrain

Where is Fallbrook?

Fallbrook sits at 33.4°N, 117.3°W, 682 ft above sea level, in United States. The nearest listed city is Temecula, 9.9 mi away.

Topography around Fallbrook

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

Within 2 miles, the terrain around Fallbrook has only modest variations in elevation — a maximum elevation change of 748 ft around an average of 682 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,123 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,722 ft.

The land around Fallbrook is covered by grassland (33%), trees (32%) and artificial surfaces (27%) within 2 miles, trees (42%) and grassland (31%) within 10 miles, and shrubs (25%) and water (22%) within 50 miles.

2 miles
748 ft
10 miles
3,123 ft
50 miles
10,722 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Temecula 9.9 mi · Vista 12 mi · Murrieta 12 mi · Oceanside 14 mi · Wildomar 16 mi · Carlsbad 16 mi · San Marcos 17 mi · Escondido 20 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 Fallbrook (33.3764°, -117.2511°, elevation 682 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).