Buin weather in October

In October, Buin sees average daytime highs of 21°C and overnight lows near 8°C, with 38 mm of precipitation across 5.2 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 50% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 18 min by month's end. Set against the rest of the year, October is Buin's 7th-clearest and 6th-windiest month. For the whole year in context, see Buin's year-round climate.

Daytime high
21°
7th warmest
Overnight low
6th coldest
Precipitation
38 mm
5.2 wet days
Daylight
12 h 54 min
7:02 AM – 7:54 PM
Cloud cover
44%
7th clearest
Wind
5 km/h
6th windiest
Solar energy
6.54 kWh/m²
Travel score
7.4
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 22°C by the end.

A typical October day in Buin reaches about 21°C in the afternoon and slips back to 8°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1197
2197
3207
4207
5207
6207
7207
8207
9208
10208
11208
12208
13208
14218
15218
16218
17218
18218
19218
20219
21219
22229
23229
24229
25229
26229
27229
28229
29229
30229
312210

Buin weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 15°30.9147.7
Feb28° / 15°4113.38.3
Mar26° / 13°71.112.38.9
Apr22° / 293.111.28.2
May18° / 70610.36.5
Jun15° / 1267.89.84.8
Jul15° / 947.2104.7
Aug16° / 837.410.75.5
Sep18° / 577.211.86.4
Oct21° / 385.212.87.4
Nov24° / 11°152.813.88.7
Dec27° / 13°71.214.28.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45842
55842
65842
75842
85941
96040
106040
116040
126139
136139
146238
156238
166238
176337
186436
196436
206535
216535
226634
236832
246832
256931
266931
277030
287030
297129
307129
317129

Chance of precipitation in October

Any precipitation

Buin gets around 38 mm of rain and snow over 5.2 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 17% and peaks near 22% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
122
222
322
422
522
622
722
822
921
1020
1120
1219
1318
1418
1517
1616
1716
1815
1915
2014
2114
2213
2313
2412
2512
2612
2712
2812
2912
3012
3113

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
15991
16991
17991
18991
19991
20991
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982
31982

Wind in October

Winds average 5 km/h in October.

Across October, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)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
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October 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 October. Sunrise moves from 7:22 AM to 6:46 AM, and sunset from 7:42 PM to 8:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:227:42
212.47:217:43
312.47:197:43
412.47:187:44
512.57:177:45
612.57:157:46
712.57:147:46
812.67:127:47
912.67:117:48
1012.67:107:49
1112.77:097:50
1212.77:077:50
1312.87:067:51
1412.87:057:52
1512.87:047:53
1612.97:027:54
1712.97:017:55
1812.97:007:55
1913.06:597:56
2013.06:587:57
2113.06:567:58
2213.16:557:59
2313.16:548:00
2413.16:538:00
2513.26:528:01
2613.26:518:02
2713.26:508:03
2813.26:498:04
2913.36:488:05
3013.36:478:06
3113.36:468:07

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.54 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 8.83 kWh/m² in December across the year — October's 6.54 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.9Bright
45.9Bright
56.0Bright
66.0Intense
76.1Intense
86.1Intense
96.2Intense
106.2Intense
116.3Intense
126.3Intense
136.4Intense
146.5Intense
156.5Intense
166.5Intense
176.6Intense
186.7Intense
196.7Intense
206.8Intense
216.8Intense
226.8Intense
236.9Intense
246.9Intense
257.0Intense
267.0Intense
277.1Intense
287.1Intense
297.1Intense
307.2Intense
317.2Intense
Planning a trip in October

Hazard calendar for Buin

In seasonPeak

None of Buin's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Buin's rainy season runs May–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Buin?

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

7.4
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 Buin for general sightseeing.

What to pack for Buin in October

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

In October, Buin sees daytime highs around 21°C and nights near 8°C. Pack sun protection. About 5 days see rain.

sun protection

UV index in Buin in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Buin peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 17UV 13Jun 15UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr5Moderate
May3Moderate
Jun3Moderate
Jul3Moderate
Aug3Moderate
Sep6High
Oct9Very high
Nov10Extreme
Dec12Extreme

Air quality in Buin 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 Buin is worst in July — around 108 µg/m³ PM2.5 (unhealthy), about 3.9× the cleanest month (December, 28 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJul 16107 µg/m³Dec 2128 µg/m³
PM2.5 (µg/m³)Level
Jan30Moderate
Feb31Moderate
Mar41Poor
Apr56Unhealthy
May80Unhealthy
Jun96Unhealthy
Jul108Unhealthy
Aug95Unhealthy
Sep78Unhealthy
Oct55Poor
Nov35Poor
Dec28Moderate
Location & terrain

Where is Buin?

Buin sits at 33.7°S, 70.7°W, 483 m above sea level, in Chile. The nearest listed city is Paine, 8.0 km away.

Topography around Buin

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

Within 3 km, the terrain around Buin has only modest variations in elevation — a maximum elevation change of 74 m around an average of 473 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,416 m; within 80 km, extreme variations in elevation — a maximum elevation change of 6,085 m.

The land around Buin is covered by cropland (31%) and artificial surfaces (30%) within 3 km, cropland (33%) within 16 km, and shrubs (25%), grassland (23%) and bare terrain (21%) within 80 km.

3 km
74 m
16 km
1,416 m
80 km
6,085 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainsnow and ice
October weather nearby: Paine 8.0 km · San Bernardo 16 km · Talagante 19 km · Peñaflor 19 km · Padre Hurtado 19 km · La Pintana 19 km · Puente Alto 20 km · El Monte 23 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 Buin (-33.7326°, -70.7428°, elevation 483 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. 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).