Puente Alto weather in December

In December, Puente Alto sees average daytime highs of 22°C and overnight lows near 10°C, with 25 mm of rain across 6.7 wet days and about 14.2 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 23°C by the end. The sky is clear or mostly clear about 81% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of December to 14 h 12 min by month's end. Set against the rest of the year, December is Puente Alto's 4th-clearest and 2nd-windiest month. For the whole year in context, see Puente Alto's year-round climate.

Daytime high
22°
3rd warmest
Overnight low
10°
9th coldest
Rainfall
25 mm
6.7 wet days
Daylight
14 h 12 min
6:32 AM – 8:45 PM
Cloud cover
22%
4th clearest
Wind
5 km/h
2nd windiest
Solar energy
8.76 kWh/m²
Travel score
7.9
out of 10

Puente Alto is settlement in Chile.

Air quality
High
PM2.5 26.1 µg/m³ · 2016

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 23°C by the end.

A typical December day in Puente Alto reaches about 22°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1218
2218
3218
4218
5218
6219
7219
8219
9219
10219
11229
12229
13229
14229
152210
162210
172210
182210
192210
202210
212310
222310
232310
242311
252311
262311
272311
282311
292311
302311
312311

How December really feels in Puente Alto

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Puente Alto weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 12°153.90148.8
Feb23° / 11°144.1013.28.7
Mar22° / 10°152.8012.38.6
Apr18° / 394.40.511.27.1
May14° / 807.12.310.34.6
Jun10° / -0°1298.65.39.82.4
Jul / -2°9785.3101.9
Aug11° / -0°9085.210.82.9
Sep14° / 7293.611.84.1
Oct16° / 6211212.85.3
Nov19° / 4510.30.413.76.6
Dec22° / 10°256.7014.27.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 10%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28614
38614
48713
58812
68812
78812
88911
98911
108911
118911
129010
139010
149010
159010
169010
179010
189010
199010
20928
21928
22919
23919
24919
25919
26919
27937
28937
29937
30937
31937

Chance of precipitation in December

Any precipitation

Puente Alto gets around 25 mm of rain over 6.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
131
230
330
429
528
628
727
826
926
1025
1125
1224
1323
1423
1522
1621
1720
1820
1919
2019
2118
2218
2317
2417
2516
2616
2716
2815
2915
3015
3115

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December 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
11991
12991
13991
14991
15991
16991
17982
18982
19982
20982
21973
22973
23973
24973
25973
26973
27973
28973
29973
30973
31982

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 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
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 06 min at the start of December to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:30 AM to 6:39 AM, and sunset from 8:34 PM to 8:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.16:308:34
214.16:308:35
314.16:308:36
414.16:308:37
514.16:308:37
614.16:308:38
714.16:308:39
814.26:308:40
914.26:308:40
1014.26:308:41
1114.26:318:42
1214.26:318:42
1314.26:318:43
1414.26:318:44
1514.26:328:44
1614.26:328:45
1714.26:328:46
1814.26:338:46
1914.26:338:47
2014.26:338:47
2114.26:348:48
2214.26:348:48
2314.26:358:49
2414.26:358:49
2514.26:368:50
2614.26:368:50
2714.26:378:50
2814.26:378:51
2914.26:388:51
3014.26:398:51
3114.26:398:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.76 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.66 kWh/m² to a high of 8.76 kWh/m² in December across the year — December's 8.76 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.4Intense
28.5Intense
38.5Intense
48.5Intense
58.5Intense
68.6Intense
78.6Intense
88.6Intense
98.6Intense
108.6Intense
118.7Intense
128.7Intense
138.7Intense
148.7Intense
158.7Intense
168.8Intense
178.8Intense
188.8Intense
198.8Intense
208.8Intense
218.8Intense
228.9Intense
238.9Intense
248.9Intense
258.9Intense
268.9Intense
278.9Intense
288.9Intense
298.9Intense
308.9Intense
318.9Intense
Planning a trip in December

Hazard calendar for Puente Alto

In seasonPeak

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

Puente Alto's rainy season runs May–October, when most of the year's rain falls.

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

Is December a good time to visit Puente Alto?

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

7.9
Sightseeing
4th-best month of the year
5.5
Beach & pool
4th-best month of the year

December is one of the better times to visit Puente Alto for general sightseeing.

What to pack for Puente Alto in December

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

In December, Puente Alto sees daytime highs around 22°C and nights near 10°C. Pack sun protection. Worth having: light clothes. About 7 days see rain.

sun protectionlight clothes

UV index in Puente Alto in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Puente Alto peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 18UV 14Jun 17UV 4
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr6High
May4Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep7Very high
Oct10Extreme
Nov12Extreme
Dec13Extreme

Air quality in Puente Alto in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Puente Alto is worst in July — around 46 µg/m³ PM2.5 (poor), about 3.9× the cleanest month (December, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Puente Alto's WHO annual average of 26.1 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 1646 µg/m³Dec 2112 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar17Moderate
Apr24Moderate
May34Moderate
Jun41Poor
Jul46Poor
Aug41Poor
Sep33Moderate
Oct23Moderate
Nov15Moderate
Dec12Good
Location & terrain

Where is Puente Alto?

Puente Alto sits at 33.6°S, 70.6°W, 700 m above sea level, in Chile. The nearest listed city is La Pintana, 6.0 km away.

Topography around Puente Alto

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

Within 3 km, the terrain around Puente Alto has only modest variations in elevation — a maximum elevation change of 231 m around an average of 687 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,436 m; within 80 km, extreme variations in elevation — a maximum elevation change of 6,491 m.

The land around Puente Alto is covered by artificial surfaces (63%) within 3 km, artificial surfaces (30%) and shrubs (24%) within 16 km, and bare terrain (30%), shrubs (24%) and grassland (20%) within 80 km.

3 km
231 m
16 km
2,436 m
80 km
6,491 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainsnow and ice
December weather nearby: La Pintana 6.0 km · San Bernardo 12 km · Peñalolén 16 km · Ñuñoa 18 km · Santiago 18 km · Buin 20 km · Maipú 21 km · Padre Hurtado 22 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 Puente Alto (-33.6117°, -70.5758°, elevation 700 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).