General Alvear weather in December

In December, General Alvear sees average daytime highs of 32°C and overnight lows near 18°C, with 57 mm of rain across 8.1 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 30°C in the first days to 33°C by the end. The sky is clear or mostly clear about 71% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of December to 14 h 18 min by month's end. Set against the rest of the year, December is General Alvear's 1st-clearest and 2nd-windiest month. For the whole year in context, see General Alvear's year-round climate.

Daytime high
32°
2nd warmest
Overnight low
18°
10th coldest
Rainfall
57 mm
8.1 wet days
Daylight
14 h 18 min
6:17 AM – 8:37 PM
Cloud cover
31%
1st clearest
Wind
14 km/h
2nd windiest
Solar energy
8.07 kWh/m²
Travel score
4.7
out of 10

General Alvear is city in Mendoza Province, Argentina.

Founded
1914

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 30°C in the first days to 33°C by the end.

A typical December day in General Alvear reaches about 32°C in the afternoon and slips back to 18°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 37°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)
13016
23016
33017
43017
53017
63017
73117
83117
93117
103117
113117
123117
133118
143118
153218
163218
173218
183218
193218
203218
213219
223319
233319
243319
253319
263319
273319
283319
293319
303319
313319

How December really feels in General Alvear

Once humidity and wind are folded in, December averages 14 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
14
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

General Alvear weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 19°478.914.13.9
Feb31° / 18°527.113.34.9
Mar28° / 16°536.712.36.8
Apr23° / 11°395.111.17.9
May19° / 253.810.26.9
Jun16° / 132.79.75.8
Jul15° / 132.49.95.8
Aug18° / 183.110.77.3
Sep21° / 284.211.87.7
Oct25° / 12°577.312.97.6
Nov29° / 15°497.213.86.5
Dec32° / 18°578.114.34.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18020
28020
38020
48020
58020
68020
78020
88119
98119
108218
118218
128416
138416
148515
158515
168713
178713
188812
198812
208911
218911
228911
238911
248812
258812
268812
278812
288812
298713
308713
318713

Chance of precipitation in December

Any precipitation

General Alvear gets around 57 mm of rain over 8.1 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 26% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1126
1226
1326
1425
1525
1624
1724
1824
1924
2024
2124
2224
2324
2424
2525
2625
2726
2826
2926
3027
3127

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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1811540
2801550
3801550
4791650
5791650
6771760
7771760
8761860
9751861
10741871
11741871
12731971
13731971
14731971
15731971
16731971
17731971
18711982
19711982
20711982
21701992
22701992
236919102
246819112
256620122
266420133
276420133
286320143
296220153
306120163
316120163

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 12 min at the start of December to 14 h 18 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 6:15 AM to 6:24 AM, and sunset from 8:26 PM to 8:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.26:158:26
214.26:158:27
314.26:158:28
414.26:158:28
514.26:158:29
614.36:158:30
714.36:158:31
814.36:158:32
914.36:158:32
1014.36:158:33
1114.36:158:34
1214.36:168:35
1314.36:168:35
1414.36:168:36
1514.36:168:37
1614.36:178:37
1714.36:178:38
1814.36:178:38
1914.46:188:39
2014.46:188:39
2114.46:198:40
2214.46:198:40
2314.46:208:41
2414.46:208:41
2514.46:218:42
2614.36:218:42
2714.36:228:42
2814.36:228:43
2914.36:238:43
3014.36:248:43
3114.36:248:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.07 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.59 kWh/m² to a high of 8.07 kWh/m² in December across the year — December's 8.07 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
98.0Intense
108.0Intense
118.0Intense
128.0Intense
138.1Intense
148.1Intense
158.1Intense
168.1Intense
178.1Intense
188.1Intense
198.2Intense
208.2Intense
218.2Intense
228.2Intense
238.2Intense
248.2Intense
258.2Intense
268.2Intense
278.1Intense
288.1Intense
298.1Intense
308.1Intense
318.1Intense
Planning a trip in December

Is December a good time to visit General Alvear?

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

4.7
Sightseeing
11th-best month of the year
7.3
Beach & pool
4th-best month of the year

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

What to pack for General Alvear in December

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

In December, General Alvear sees daytime highs around 32°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in General Alvear in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in General Alvear peaks around January 18 at about 13 (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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 18UV 13Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Very high
Apr5High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov12Extreme
Dec12Extreme
Location & terrain

Where is General Alvear?

General Alvear sits at 35.0°S, 67.7°W, 471 m above sea level, in Argentina. The nearest listed city is San Rafael, 71 km away.

RivadaviaSan MartínTupungatoSan LuisPerdriel

Topography around General Alvear

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

Within 3 km, the terrain around General Alvear has only modest variations in elevation — a maximum elevation change of 15 m around an average of 471 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,336 m.

The land around General Alvear is covered by grassland (49%) and artificial surfaces (23%) within 3 km, shrubs (47%) and grassland (41%) within 16 km, and shrubs (85%) within 80 km.

3 km
15 m
16 km
62 m
80 km
1,336 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: San Rafael 71 km · Malargüe 180 km · Tunuyán 197 km · Rivadavia 211 km · San Martín 222 km · Tupungato 223 km · San Luis 226 km · Perdriel 238 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 General Alvear (-34.9775°, -67.6962°, elevation 471 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).