Los Andes weather in December

In December, Los Andes sees average daytime highs of 20°C and overnight lows near 8°C, with 22 mm of rain across 6 wet days and about 14.1 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 85% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of December to 14 h 06 min by month's end. Set against the rest of the year, December is Los Andes's 4th-clearest and 1st-windiest month. For the whole year in context, see Los Andes's year-round climate.

Daytime high
20°
3rd warmest
Overnight low
9th coldest
Rainfall
22 mm
6 wet days
Daylight
14 h 12 min
6:34 AM – 8:43 PM
Cloud cover
20%
4th clearest
Wind
5 km/h
1st windiest
Solar energy
8.99 kWh/m²
Travel score
7.6
out of 10

Los Andes is Chilean city.

Density
5,127/km²
people per km²
Founded
1791

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 18°C in the first days to 21°C by the end.

A typical December day in Los Andes reaches about 20°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 23°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1187
2187
3187
4187
5187
6197
7197
8197
9197
10198
11198
12198
13198
14198
15198
16208
17208
18209
19209
20209
21209
22209
23209
24209
252010
262010
272110
282110
292110
302110
312110

How December really feels in Los Andes

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.

Los Andes 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
Jan21° / 11°175013.98.1
Feb21° / 11°134.1013.28.1
Mar20° / 132.60.212.28.1
Apr16° / 273.90.711.26.2
May12° / 606.43.510.33.6
Jun / -2°1067.46.39.91.2
Jul / -3°736.75.910.10.6
Aug / -2°696.65.610.81.4
Sep10° / 487.34.111.82.7
Oct14° / 4392.312.84.3
Nov17° / 328.20.413.76.1
Dec20° / 226014.17.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 85% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 8%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1919
2919
39010
49010
59010
6919
7919
8919
9919
10919
11919
12928
13928
14928
15928
16928
17928
18928
19928
20928
21928
22928
23937
24928
25928
26928
27928
28928
29928
30928
31928

Chance of precipitation in December

Any precipitation

Los Andes gets around 22 mm of rain over 6 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 19% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
326
426
525
625
725
824
923
1023
1122
1221
1320
1419
1519
1618
1717
1816
1916
2015
2115
2215
2315
2414
2514
2614
2715
2815
2915
3015
3116

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 5 km/h in December, the windiest month of the year.

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 hours at the start of December to 14 h 06 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 6:32 AM to 6:41 AM, and sunset from 8:32 PM to 8:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.06:328:32
214.06:328:33
314.06:328:34
414.06:328:35
514.16:328:36
614.16:328:36
714.16:328:37
814.16:328:38
914.16:328:39
1014.16:328:39
1114.16:338:40
1214.16:338:41
1314.16:338:41
1414.16:338:42
1514.16:348:43
1614.26:348:43
1714.26:348:44
1814.26:358:44
1914.26:358:45
2014.26:358:45
2114.26:368:46
2214.26:368:46
2314.26:378:47
2414.26:378:47
2514.26:388:48
2614.26:388:48
2714.26:398:48
2814.26:408:49
2914.16:408:49
3014.16:418:49
3114.16:418:50

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.99 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.97 kWh/m² to a high of 8.99 kWh/m² in December across the year — December's 8.99 kWh/m² sits near the top of that range.

0246810151015202531
Solar energy (kWh/m²)Level
18.8Intense
28.8Intense
38.8Intense
48.8Intense
58.8Intense
68.8Intense
78.9Intense
88.9Intense
98.9Intense
108.9Intense
118.9Intense
128.9Intense
138.9Intense
149.0Intense
159.0Intense
169.0Intense
179.0Intense
189.0Intense
199.0Intense
209.0Intense
219.1Intense
229.1Intense
239.1Intense
249.1Intense
259.1Intense
269.1Intense
279.1Intense
289.1Intense
299.1Intense
309.1Intense
319.1Intense
Planning a trip in December

Hazard calendar for Los Andes

In seasonPeak

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

Los Andes'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 December a good time to visit Los Andes?

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

7.6
Sightseeing
4th-best month of the year
3.6
Beach & pool
4th-best month of the year

December is one of the better times to visit Los Andes for general sightseeing.

What to pack for Los Andes in December

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

In December, Los Andes sees daytime highs around 20°C and nights near 8°C. Pack sun protection. About 6 days see rain.

sun protection

UV index in Los Andes in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Los Andes peaks around January 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 18UV 16Jun 22UV 5
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar12Extreme
Apr8Very high
May5High
Jun5Moderate
Jul5Moderate
Aug7High
Sep8Very high
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Los Andes 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 Los Andes is worst in July — around 118 µg/m³ PM2.5 (unhealthy), about 4.8× the cleanest month (January, 25 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJul 16116 µg/m³Jan 1225 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb28Moderate
Mar41Poor
Apr58Unhealthy
May84Unhealthy
Jun104Unhealthy
Jul118Unhealthy
Aug102Unhealthy
Sep82Unhealthy
Oct55Poor
Nov36Poor
Dec26Moderate
Location & terrain

Where is Los Andes?

Los Andes sits at 32.8°S, 70.6°W, 833 m above sea level, in Chile. The nearest listed city is San Esteban, 4.0 km away.

Topography around Los Andes

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

Within 3 km, the terrain around Los Andes has significant variations in elevation — a maximum elevation change of 406 m around an average of 831 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,054 m; within 80 km, extreme variations in elevation — a maximum elevation change of 6,840 m.

The land around Los Andes is covered by cropland (30%) and artificial surfaces (29%) within 3 km, shrubs (40%) and grassland (23%) within 16 km, and bare terrain (37%) and shrubs (29%) within 80 km.

3 km
406 m
16 km
2,054 m
80 km
6,840 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainsnow and icewater
December weather nearby: San Esteban 4.0 km · San Felipe 15 km · Putaendo 26 km · Llaillay 33 km · Colina 42 km · Batuco 49 km · Chicureo 50 km · La Calera 56 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 Los Andes (-32.8337°, -70.5983°, elevation 833 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).