Imperial Beach weather in October

In October, Imperial Beach sees average daytime highs of 70°F and overnight lows near 62°F, with 0.6 in of rain across 2.4 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 72°F in the first days to 68°F by the end. The sky is clear or mostly clear about 68% 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 Imperial Beach's 5th-clearest and 12th-windiest month. For the whole year in context, see Imperial Beach's year-round climate.

Daytime high
70°
4th warmest
Overnight low
62°
9th coldest
Rainfall
0.6 in
2.4 wet days
Daylight
11 h 12 min
5:58 AM – 5:09 PM
Cloud cover
30%
5th clearest
Wind
6 mph
12th windiest
Solar energy
4.87 kWh/m²
Travel score
8.3
out of 10

Imperial Beach is city in San Diego County, California, United States.

Density
2,360/km²
people per km²
Founded
1887

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 72°F in the first days to 68°F by the end.

A typical October day in Imperial Beach reaches about 70°F in the afternoon and slips back to 62°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 77°F. Set against its neighbours, October runs about 3°F cooler than September and about 4°F warmer than November.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17264
27264
37263
47263
57163
67163
77163
87163
97162
107162
117162
127162
137162
147062
157062
167062
177062
187061
197061
207061
216961
226961
236961
246960
256960
266960
276960
286860
296860
306859
316859

Imperial Beach 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
Jan61° / 52°2.56.110.15.8
Feb61° / 52°3.1710.85.4
Mar61° / 53°2.15.911.85.8
Apr63° / 55°1.04.212.86.7
May65° / 58°0.42.113.67.5
Jun68° / 60°0.10.414.18.3
Jul72° / 65°0.10.413.98.8
Aug74° / 66°0.00.313.29.2
Sep73° / 65°0.20.812.29.0
Oct70° / 62°0.62.411.28.3
Nov66° / 56°1.03.610.37.4
Dec61° / 52°2.05.79.96.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58812
68812
78812
88812
98713
108614
118614
128515
138515
148317
158317
168317
178119
188119
198119
207921
217921
227921
237921
247921
257921
267921
277921
287921
297921
308020
318020

Chance of precipitation in October

Any precipitation

Imperial Beach gets around 0.6 in of rain over 2.4 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 7% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
35
45
55
66
76
86
96
107
117
127
137
147
157
168
178
188
198
209
219
229
239
249
259
269
279
289
299
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 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12247292
22448272
32548252
42649232
52850211
62951191
73051181
83152161
93252151
103352141
113353131
123453121
133553111
143553111
153653101
163653101
17385291
18395191
19405181
20424971
21454871
22474661
23504461
24534250
25554050
26583840
27623530
28643330
29673120
30692920
31712720

Wind in October

Winds average 6 mph in October, the calmest month.

Across October, daily wind ranges from about 5 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
205calm
215calm
225calm
235calm
245calm
255calm
265calm
276calm
286calm
296calm
306calm
316calm

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 5:47 AM to 6:10 AM, and sunset from 5:28 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:475:28
211.65:485:27
311.65:485:25
411.65:495:24
511.55:505:23
611.55:515:21
711.55:515:20
811.45:525:19
911.45:535:17
1011.45:535:16
1111.35:545:15
1211.35:555:14
1311.35:565:12
1411.25:565:11
1511.25:575:10
1611.25:585:09
1711.15:595:08
1811.16:005:07
1911.16:005:05
2011.16:015:04
2111.06:025:03
2211.06:035:02
2311.06:045:01
2410.96:055:00
2510.96:054:59
2610.96:064:58
2710.86:074:57
2810.86:084:56
2910.86:094:55
3010.76:104:54
3110.76:104:54

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.87 kWh/m².

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 7.97 kWh/m² in June across the year — October's 4.87 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.6Bright
224.6Bright
234.5Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in October

Is October a good time to visit Imperial Beach?

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

8.3
Sightseeing
4th-best month of the year
5.1
Beach & pool
4th-best month of the year

October is one of the better times to visit Imperial Beach for general sightseeing.

What to pack for Imperial Beach in October

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

In October, Imperial Beach sees daytime highs around 70°F and nights near 62°F. Worth packing: sun protection.

sun protection

Sea temperature near Imperial Beach 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 70°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
Jan60Cool
Feb59Cool
Mar60Cool
Apr61Cool
May63Cool
Jun65Cool
Jul68Refreshing
Aug70Refreshing
Sep69Refreshing
Oct67Cool
Nov64Cool
Dec61Cool

UV index in Imperial Beach 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 Imperial Beach peaks around June 23 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Imperial Beach 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 Imperial Beach is worst in October — around 33 µg/m³ PM2.5 (moderate), about 5.4× the cleanest month (May, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1631 µg/m³May 176 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr9Good
May6Good
Jun9Good
Jul8Good
Aug9Good
Sep16Moderate
Oct33Moderate
Nov13Moderate
Dec17Moderate
Location & terrain

Where is Imperial Beach?

Imperial Beach sits at 32.6°N, 117.1°W, 20 ft above sea level, in United States. The nearest listed city is Chula Vista, 4.3 mi away.

Topography around Imperial Beach

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

Within 2 miles, the terrain around Imperial Beach has only modest variations in elevation — a maximum elevation change of 105 ft around an average of 16 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,152 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,450 ft.

The land around Imperial Beach is covered by artificial surfaces (36%) and water (35%) within 2 miles, water (43%) and artificial surfaces (35%) within 10 miles, and water (35%) and shrubs (24%) within 50 miles.

2 miles
105 ft
10 miles
1,152 ft
50 miles
6,450 ft
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
October weather nearby: Chula Vista 4.3 mi · National City 6.8 mi · Coronado 8.1 mi · Tijuana 8.7 mi · San Diego 9.3 mi · Pórticos de San Antonio 11 mi · La Presa 11 mi · La Joya 12 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 Imperial Beach (32.5839°, -117.1131°, elevation 20 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).