Arica weather in October

In October, Arica sees average daytime highs of 21°C and overnight lows near 15°C, with 9 mm of rain across 2 wet days and about 12.4 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 2% of the time in October, and the air most often feels comfortable.

Daylight stretches from about 12 h 12 min at the start of October to 12 h 42 min by month's end. Set against the rest of the year, October is Arica's 5th-clearest and 3rd-windiest month. For the whole year in context, see Arica's year-round climate.

Daytime high
21°
8th warmest
Overnight low
15°
5th coldest
Rainfall
9 mm
2 wet days
Daylight
12 h 24 min
7:13 AM – 7:39 PM
Cloud cover
73%
5th clearest
Wind
9 km/h
3rd windiest
Solar energy
7.18 kWh/m²
Travel score
7.3
out of 10

Arica is city of Chile.

Air quality
Moderate
PM2.5 11.6 µg/m³ · 2019
Density
5,554/km²
people per km²
Founded
1541

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical October day in Arica reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 22°C. Set against its neighbours, October runs about 1°C warmer than September and about 2°C cooler than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12015
22015
32015
42015
52115
62115
72115
82115
92115
102115
112115
122115
132115
142115
152115
162115
172115
182115
192115
202115
212115
222115
232115
242115
252115
262215
272215
282216
292216
302216
312216

Arica weather by month

How October compares with the rest of the year at a glance. October is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 20°102.3137.4
Feb26° / 20°7212.67.4
Mar26° / 19°40.712.17.8
Apr24° / 18°71.711.68.0
May22° / 16°248.911.16.5
Jun20° / 14°3012.710.95.6
Jul19° / 13°2910.6115.7
Aug19° / 14°206.811.46.2
Sep20° / 14°154.411.96.7
Oct21° / 15°9212.47.3
Nov23° / 16°40.312.98.1
Dec25° / 18°50.813.18.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% 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 83%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
21090
31090
41090
51090
61090
71090
81090
91090
101090
111090
121189
131288
141288
151387
161585
171684
181783
191882
201981
212080
222080
232179
242278
252575
262674
272773
282872
293070
303169
313268

Chance of precipitation in October

Any precipitation

Arica gets around 9 mm 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 13% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
113
212
312
412
511
611
710
810
99
109
118
128
137
147
156
166
175
185
195
204
214
224
233
243
253
263
272
282
292
302
312

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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
145541
244551
342580
440600
539610
637630
736640
834660
932680
1031690
1129710
1228720
1326740
1425750
1523770
1622780
1720791
1819801
1918811
2016831
2115841
2215841
2314851
2413852
2513852
2612862
2712862
2811872
2911872
3010882
3110882

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over October. Sunrise moves from 7:25 AM to 7:05 AM, and sunset from 7:35 PM to 7:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.27:257:35
212.27:247:35
312.27:247:36
412.27:237:36
512.27:227:36
612.37:217:36
712.37:207:37
812.37:197:37
912.37:197:37
1012.37:187:37
1112.37:177:38
1212.47:167:38
1312.47:167:38
1412.47:157:38
1512.47:147:39
1612.47:137:39
1712.47:137:39
1812.57:127:40
1912.57:117:40
2012.57:117:40
2112.57:107:41
2212.57:097:41
2312.57:097:41
2412.67:087:42
2512.67:087:42
2612.67:077:43
2712.67:077:43
2812.67:067:43
2912.67:067:44
3012.77:057:44
3112.77:057:45

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 7.18 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 7.76 kWh/m² in November across the year — October's 7.18 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.8Intense
36.8Intense
46.8Intense
56.9Intense
66.9Intense
76.9Intense
87.0Intense
97.0Intense
107.0Intense
117.0Intense
127.1Intense
137.1Intense
147.1Intense
157.2Intense
167.2Intense
177.2Intense
187.3Intense
197.3Intense
207.3Intense
217.3Intense
227.4Intense
237.4Intense
247.4Intense
257.4Intense
267.5Intense
277.5Intense
287.5Intense
297.5Intense
307.6Intense
317.6Intense
Planning a trip in October

Is October a good time to visit Arica?

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

7.3
Sightseeing
7th-best month of the year
4.5
Beach & pool
7th-best month of the year

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

What to pack for Arica in October

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

In October, Arica sees daytime highs around 21°C and nights near 15°C. Pack sun protection.

sun protection

Sea temperature near Arica in October

The nearest coast averages about 18°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in February at about 23°C and coldest in August near 17°C.

It's comfortable for a long swim from Nov 28 to Apr 30 — about 5.1 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb23Refreshing
Mar22Refreshing
Apr20Refreshing
May20Cool
Jun19Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct18Cool
Nov20Cool
Dec21Refreshing

UV index in Arica in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arica peaks around February 9 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 15Jul 11UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr11Extreme
May8Very high
Jun7High
Jul7High
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Arica?

Arica sits at 18.5°S, 70.3°W, 80 m above sea level, in Chile. The nearest listed city is Tacna, 51 km away.

Topography around Arica

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arica.

Within 3 km, the terrain around Arica has significant variations in elevation — a maximum elevation change of 290 m around an average of 49 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 863 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,342 m.

The land around Arica is covered by artificial surfaces (53%) and bare terrain (26%) within 3 km, bare terrain (56%) and water (37%) within 16 km, and bare terrain (69%) and water (27%) within 80 km.

3 km
290 m
16 km
863 m
80 km
4,342 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Tacna 51 km · Ilo 145 km · San Antonio 155 km · Moquegua 157 km · Iquique 194 km · Alto Hospicio 200 km · Pozo Almonte 205 km · Mollendo 243 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

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 Arica (-18.4755°, -70.3006°, elevation 80 m), 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).