Oceanside weather in April

In April, Oceanside sees average daytime highs of 64°F and overnight lows near 56°F, with 0.7 in of rain across 3 wet days and about 12.8 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 64°F through the month. The sky is clear or mostly clear about 53% 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 Oceanside's 7th-clearest and 1st-windiest month. For the whole year in context, see Oceanside's year-round climate.

Daytime high
64°
8th warmest
Overnight low
56°
5th coldest
Rainfall
0.7 in
3 wet days
Daylight
12 h 48 min
5:25 AM – 6:14 PM
Cloud cover
40%
7th clearest
Wind
6 mph
1st windiest
Solar energy
6.67 kWh/m²
Travel score
7.2
out of 10

Oceanside is city in San Diego County, California, United States.

Density
1,608/km²
people per km²
Founded
1888

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 64°F through the month.

A typical April day in Oceanside reaches about 64°F in the afternoon and slips back to 56°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 72°F. Set against its neighbours, April runs about 2°F warmer than March and about 2°F cooler than May.

50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16355
26355
36355
46355
56355
66455
76455
86455
96455
106455
116455
126455
136455
146456
156456
166456
176556
186556
196556
206556
216556
226556
236556
246557
256557
266657
276657
286657
296657
306657

Oceanside 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
Jan62° / 52°2.55.310.16.2
Feb62° / 53°2.96.110.85.9
Mar63° / 54°1.65.311.76.3
Apr64° / 56°0.7312.87.2
May66° / 58°0.31.813.77.6
Jun69° / 62°0.10.414.28.4
Jul74° / 65°0.00.3149.2
Aug76° / 67°0.00.213.29.5
Sep75° / 66°0.10.612.29.3
Oct72° / 63°0.5211.28.5
Nov67° / 58°0.82.710.37.7
Dec63° / 53°1.84.79.86.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 31%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16337
26436
36436
46436
56634
66634
76733
86733
96832
106832
116832
126931
137030
147129
157129
167228
177228
187228
197228
207228
217228
227129
237129
247129
257129
267030
277030
287030
296931
306832

Chance of precipitation in April

Any precipitation

Oceanside gets around 0.7 in of rain over 3 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
212
312
412
511
611
711
811
911
1010
1110
1210
1310
1410
1510
1610
179
189
199
209
219
229
239
249
259
269
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 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
181181
281181
380191
480191
579201
678211
778211
877221
977221
1076231
1175241
1274242
1373252
1473252
1571263
1671263
1770273
1869274
1967285
2067285
2166286
2265296
2363307
2463307
2561318
2660328
2759338
2859338
2957349
3056359

Wind in April

Winds average 6 mph in April, the windiest month of the year.

Across April, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:45 AM to 5:09 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)
112.35:456:03
212.35:446:04
312.45:426:05
412.45:416:06
512.45:406:06
612.55:386:07
712.55:376:08
812.65:356:09
912.65:346:09
1012.65:336:10
1112.75:326:11
1212.75:306:11
1312.75:296:12
1412.85:286:13
1512.85:266:14
1612.85:256:14
1712.95:246:15
1812.95:236:16
1912.95:216:17
2013.05:206:17
2113.05:196:18
2213.05:186:19
2313.15:176:20
2413.15:156:20
2513.15:146:21
2613.15:136:22
2713.25:126:23
2813.25:116:23
2913.25:106:24
3013.35:096:25

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.67 kWh/m².

For context, solar energy here swings from a low near 3.05 kWh/m² to a high of 7.71 kWh/m² in June across the year — April's 6.67 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.4Intense
86.4Intense
96.4Intense
106.5Intense
116.5Intense
126.6Intense
136.6Intense
146.6Intense
156.7Intense
166.7Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in April

Is April a good time to visit Oceanside?

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

7.2
Sightseeing
8th-best month of the year
2.4
Beach & pool
8th-best month of the year

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

What to pack for Oceanside in April

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

In April, Oceanside sees daytime highs around 64°F and nights near 56°F. Pack sun protection. About 3 days see rain.

sun protection

Sea temperature near Oceanside 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 offshore 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 Oceanside 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 Oceanside 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 Oceanside 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 Oceanside is worst in September — around 24 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1223 µg/m³May 207 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr10Good
May7Good
Jun8Good
Jul9Good
Aug20Moderate
Sep24Moderate
Oct12Moderate
Nov11Good
Dec11Good
Location & terrain

Where is Oceanside?

Oceanside sits at 33.2°N, 117.4°W, 66 ft above sea level, in United States. The nearest listed city is Carlsbad, 3.1 mi away.

Topography around Oceanside

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

Within 2 miles, the terrain around Oceanside has only modest variations in elevation — a maximum elevation change of 279 ft around an average of 59 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,060 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,772 ft.

The land around Oceanside is covered by water (42%) and artificial surfaces (39%) within 2 miles, water (47%) within 10 miles, and water (33%) and shrubs (20%) within 50 miles.

2 miles
279 ft
10 miles
1,060 ft
50 miles
6,772 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Carlsbad 3.1 mi · Vista 8.1 mi · Encinitas 12 mi · San Marcos 13 mi · Fallbrook 14 mi · Escondido 18 mi · San Clemente 21 mi · Rancho Penasquitos 22 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 Oceanside (33.1959°, -117.3795°, elevation 66 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).