Mendoza weather in December

In December, Mendoza sees average daytime highs of 30°C and overnight lows near 18°C, with 47 mm of rain across 6.8 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 68% 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 Mendoza's 4th-clearest and 3rd-windiest month. For the whole year in context, see Mendoza's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
18°
10th coldest
Rainfall
47 mm
6.8 wet days
Daylight
14 h 12 min
6:27 AM – 8:36 PM
Cloud cover
34%
4th clearest
Wind
9 km/h
3rd windiest
Solar energy
7.98 kWh/m²
Travel score
5.6
out of 10

Mendoza is city in Argentina.

Density
2,128/km²
people per km²
Founded
1561

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 29°C in the first days to 31°C by the end.

A typical December day in Mendoza reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62917
72917
82917
92918
103018
113018
123018
133018
143018
153018
163018
173019
183119
193119
203119
213119
223119
233119
243119
253119
263120
273120
283120
293120
303120
313120

Mendoza weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan31° / 20°487.8013.94.9
Feb30° / 18°467.1013.25.8
Mar26° / 16°597.8012.37.3
Apr22° / 12°406.5011.27.5
May17° / 306.1010.36.2
Jun14° / 214.10.29.95.0
Jul14° / 193.60.710.14.9
Aug17° / 254.10.410.86.6
Sep20° / 2850.111.87.6
Oct24° / 12°436.5012.87.9
Nov28° / 16°447.5013.77.0
Dec30° / 18°476.8014.15.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18416
28416
38416
48416
58317
68317
78317
88317
98317
108416
118416
128416
138515
148515
158515
168614
178713
188713
198713
208713
218713
228713
238713
248713
258713
268614
278614
288515
298515
308515
318515

Chance of precipitation in December

Any precipitation

Mendoza gets around 47 mm of rain over 6.8 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 23% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
626
726
825
925
1024
1124
1223
1323
1422
1522
1621
1721
1820
1920
2020
2120
2220
2320
2420
2521
2621
2722
2822
2923
3023
3124

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

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1841510
2841510
3831610
4831610
5821620
6821620
7811720
8801730
9801730
10801730
11801730
12791740
13791740
14791740
15781840
16771850
17771850
18761851
19751951
20741961
21741961
22722071
23712171
24712171
25692281
26682381
27662491
28652591
296326101
306127102
315928112

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:25 AM to 6:34 AM, and sunset from 8:25 PM to 8:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.06:258:25
214.06:258:26
314.06:258:27
414.16:258:28
514.16:258:29
614.16:258:29
714.16:258:30
814.16:258:31
914.16:258:32
1014.16:258:32
1114.16:258:33
1214.16:268:34
1314.16:268:34
1414.16:268:35
1514.26:268:36
1614.26:278:36
1714.26:278:37
1814.26:288:37
1914.26:288:38
2014.26:288:38
2114.26:298:39
2214.26:298:39
2314.26:308:40
2414.26:308:40
2514.26:318:41
2614.26:318:41
2714.26:328:42
2814.26:328:42
2914.26:338:42
3014.16:348:43
3114.16:348:43

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.98 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.87 kWh/m² to a high of 7.98 kWh/m² in December across the year — December's 7.98 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.9Intense
57.9Intense
67.9Intense
77.9Intense
87.9Intense
97.9Intense
107.9Intense
118.0Intense
128.0Intense
138.0Intense
148.0Intense
158.0Intense
168.0Intense
178.0Intense
188.0Intense
198.0Intense
208.0Intense
218.0Intense
228.0Intense
238.0Intense
248.0Intense
258.0Intense
268.0Intense
278.0Intense
287.9Intense
297.9Intense
307.9Intense
317.9Intense
Planning a trip in December

Is December a good time to visit Mendoza?

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

5.6
Sightseeing
9th-best month of the year
7.7
Beach & pool
1st-best month of the year

December is a reasonable time to visit Mendoza for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mendoza in December

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

In December, Mendoza sees daytime highs around 30°C and nights near 18°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Mendoza 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 Mendoza peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 17UV 14Jun 19UV 3
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7High
Oct10Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Mendoza?

Mendoza sits at 32.9°S, 68.8°W, 853 m above sea level, in Argentina. The nearest listed city is Rodeo del Medio, 19 km away.

Topography around Mendoza

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

Within 3 km, the terrain around Mendoza has only modest variations in elevation — a maximum elevation change of 135 m around an average of 773 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,610 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,377 m.

The land around Mendoza is covered by artificial surfaces (83%) within 3 km, shrubs (42%) and artificial surfaces (24%) within 16 km, and shrubs (44%), bare terrain (23%) and grassland (21%) within 80 km.

3 km
135 m
16 km
1,610 m
80 km
5,377 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Rodeo del Medio 19 km · Perdriel 21 km · San Martín 41 km · Rivadavia 49 km · Tupungato 60 km · Tunuyán 79 km · Pocito 136 km · Caucete 148 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus 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 Mendoza (-32.8895°, -68.8458°, elevation 853 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).