Oceanside weather in March

In March, Oceanside sees average daytime highs of 63°F and overnight lows near 54°F, with 1.6 in of rain across 5.3 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 63°F through the month. The sky is clear or mostly clear about 45% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Oceanside's 11th-clearest and 4th-windiest month. For the whole year in context, see Oceanside's year-round climate.

Daytime high
63°
9th warmest
Overnight low
54°
4th coldest
Rainfall
1.6 in
5.3 wet days
Daylight
11 h 42 min
6:07 AM – 5:52 PM
Cloud cover
46%
11th clearest
Wind
6 mph
4th windiest
Solar energy
5.45 kWh/m²
Travel score
6.3
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 March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 63°F through the month.

A typical March day in Oceanside reaches about 63°F in the afternoon and slips back to 54°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 57°F and 69°F. Set against its neighbours, March runs on par with February and about 2°F cooler than April.

40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16253
26253
36253
46253
56253
66253
76353
86354
96354
106354
116354
126354
136354
146354
156354
166354
176354
186354
196354
206354
216354
226354
236354
246354
256354
266354
276354
286355
296355
306355
316355

Oceanside weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 4th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25743
35743
45743
55842
65842
75941
86040
96139
106139
116337
126337
136436
146436
156436
166436
176436
186436
196436
206436
216337
226337
236337
246337
256337
266238
276238
286238
296337
306337
316337

Chance of precipitation in March

Any precipitation

Oceanside gets around 1.6 in of rain over 5.3 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
223
322
422
521
621
720
820
919
1018
1118
1218
1317
1417
1517
1617
1717
1816
1916
2016
2116
2216
2316
2415
2515
2615
2714
2814
2914
3013
3113

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19280
29190
390100
488120
587130
685150
783170
881190
980200
1078220
1176240
1275250
1373270
1472280
1572280
1672280
1772280
1873270
1973270
2074260
2175250
2276240
2376231
2477221
2578211
2679201
2780191
2881181
2981181
3081181
3181181

Wind in March

Winds average 6 mph in March.

Across March, 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.

0246810151015202531
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
316calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 12 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over March. Sunrise moves from 6:26 AM to 5:46 AM, and sunset from 5:40 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:265:40
211.36:255:40
311.36:245:41
411.36:225:42
511.46:215:43
611.46:205:44
711.46:195:45
811.56:175:45
911.56:165:46
1011.56:155:47
1111.66:135:48
1211.66:125:48
1311.66:115:49
1411.76:095:50
1511.76:085:51
1611.76:075:52
1711.86:055:52
1811.86:045:53
1911.96:035:54
2011.96:015:55
2111.96:005:55
2212.05:595:56
2312.05:575:57
2412.05:565:58
2512.15:555:58
2612.15:535:59
2712.15:526:00
2812.25:506:00
2912.25:496:01
3012.25:486:02
3112.35:466:03

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.45 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 — March's 5.45 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.2Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
296.0Bright
306.0Intense
316.1Intense
Planning a trip in March

Is March a good time to visit Oceanside?

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

6.3
Sightseeing
10th-best month of the year
1.6
Beach & pool
10th-best month of the year

March is a reasonable time to visit Oceanside for sightseeing.

What to pack for Oceanside in March

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

In March, Oceanside sees daytime highs around 63°F and nights near 54°F. Worth packing: sun protection. About 5 days see rain.

sun protection

Sea temperature near Oceanside in March

The nearest coast averages about 60°F in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 5 — 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 March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March 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
March 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).