Oceanside weather in October

In October, Oceanside sees average daytime highs of 72°F and overnight lows near 63°F, with 0.5 in of rain across 2 wet days and about 11.2 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 74°F in the first days to 70°F by the end. The sky is clear or mostly clear about 65% of the time in October, and the air most often feels comfortable.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is Oceanside's 5th-clearest and 9th-windiest month. For the whole year in context, see Oceanside's year-round climate.

Daytime high
72°
4th warmest
Overnight low
63°
9th coldest
Rainfall
0.5 in
2 wet days
Daylight
11 h 12 min
6:00 AM – 5:09 PM
Cloud cover
31%
5th clearest
Wind
5 mph
9th windiest
Solar energy
4.72 kWh/m²
Travel score
8.5
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 October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 74°F in the first days to 70°F by the end.

A typical October day in Oceanside reaches about 72°F in the afternoon and slips back to 63°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 80°F. Set against its neighbours, October runs about 3°F cooler than September and about 5°F warmer than November.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17465
27465
37464
47464
57464
67364
77364
87364
97364
107364
117363
127363
137363
147263
157263
167263
177263
187263
197262
207262
217162
227162
237162
247162
257162
267161
277161
287061
297061
307061
317060

Oceanside weather by month

How October compares with the rest of the year at a glance. October is the 4th-warmest and 7th-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18416
28317
38317
48317
58317
68317
78317
88317
98317
108317
118218
128119
138119
148020
157921
167921
177822
187723
197624
207525
217426
227426
237426
247426
257426
267426
277426
287426
297525
307525
317525

Chance of precipitation in October

Any precipitation

Oceanside gets around 0.5 in of rain over 2 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
13
24
34
44
54
65
75
85
95
106
116
126
136
146
156
166
176
186
197
207
217
227
237
248
258
268
278
288
298
309
319

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the comfortable band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182739241
282839231
392939211
4103039201
5103139181
6113239171
7113339151
8123439141
9133439131
10133539121
11133539111
12143639111
13143638101
14143738101
1515373891
1615383791
1716383781
1817383681
1918393570
2019393470
2121403360
2222403250
2323413150
2425422940
2526422830
2628432730
2730432520
2831432410
2933442210
3034442110
3136441910

Wind in October

Winds average 5 mph in October.

Across October, 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.

0246810151015202531
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
315calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 5:48 AM to 6:12 AM, and sunset from 5:29 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:485:29
211.65:495:27
311.65:505:26
411.65:505:25
511.55:515:23
611.55:525:22
711.55:535:21
811.45:535:19
911.45:545:18
1011.45:555:17
1111.35:565:16
1211.35:575:14
1311.35:575:13
1411.25:585:12
1511.25:595:11
1611.26:005:09
1711.16:015:08
1811.16:015:07
1911.16:025:06
2011.06:035:05
2111.06:045:04
2211.06:055:03
2310.96:065:01
2410.96:065:00
2510.96:074:59
2610.86:084:58
2710.86:094:57
2810.86:104:56
2910.76:114:55
3010.76:124:55
3110.76:124:54

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.72 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 — October's 4.72 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.2Bright
294.2Bright
304.2Bright
314.1Bright
Planning a trip in October

Is October a good time to visit Oceanside?

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

8.5
Sightseeing
4th-best month of the year
6.1
Beach & pool
4th-best month of the year

October is one of the better times to visit Oceanside for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Oceanside in October

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

In October, Oceanside sees daytime highs around 72°F and nights near 63°F. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Oceanside in October

The nearest coast averages about 67°F in October — 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 October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — 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 October

GoodModeratePoorUnhealthyVery unhealthy

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