Leandro N. Alem weather in December

In December, Leandro N. Alem sees average daytime highs of 31°C and overnight lows near 20°C, with 175 mm of rain across 14.1 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 39% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 36 min at the start of December to 13 h 42 min by month's end. Set against the rest of the year, December is Leandro N. Alem's 9th-clearest and 8th-windiest month. For the whole year in context, see Leandro N. Alem's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
20°
10th coldest
Rainfall
175 mm
14.1 wet days
Daylight
13 h 42 min
5:45 AM – 7:30 PM
Cloud cover
55%
9th clearest
Wind
9 km/h
8th windiest
Solar energy
6.56 kWh/m²
Travel score
4.3
out of 10

Leandro N. Alem is city in Misiones, Argentina.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Leandro N. Alem reaches about 31°C in the afternoon and slips back to 20°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53019
63019
73019
83019
93019
103019
113019
123119
133119
143120
153120
163120
173120
183120
193120
203120
213120
223120
233120
243120
253120
263120
273120
283120
293121
303121
313121

How December really feels in Leandro N. Alem

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.

Leandro N. Alem 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
Jan31° / 21°17215.413.53.9
Feb30° / 20°15715.1134.2
Mar29° / 19°14312.912.25.1
Apr26° / 17°16310.311.46.7
May22° / 13°1509.810.76.8
Jun21° / 12°1349.110.36.5
Jul20° / 11°1309.510.46.6
Aug23° / 13°978.3117.4
Sep25° / 14°15810.411.87.0
Oct27° / 16°22113.612.76.1
Nov29° / 18°17111.613.45.6
Dec31° / 20°17514.113.74.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35545
45545
55545
65545
75545
85644
95644
105644
115644
125644
135644
145644
155743
165743
175743
185743
195644
205545
215545
225446
235446
245347
255347
265248
275248
285248
295347
305347
315347

Chance of precipitation in December

Any precipitation

Leandro N. Alem gets around 175 mm of rain over 14.1 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 45% and peaks near 50% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
141
241
342
442
542
642
742
842
942
1042
1142
1242
1343
1443
1544
1644
1744
1845
1945
2046
2146
2247
2348
2449
2549
2650
2750
2850
2950
3050
3150

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 64% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
18152437160
28152437170
37142437180
47142437180
57132437190
67132436200
77122436210
87122436210
97112436220
107112336230
116112336230
126102336240
136102336250
145102336260
15592336270
16592236270
17592236280
18582236290
19482136310
20482136320
21472035330
22472035341
23371934361
24371933371
25371833391
26361832401
27361831411
28261830422
29261829432
30261828442
31261827442

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
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 13 h 36 min at the start of December to 13 h 42 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 5:42 AM to 5:53 AM, and sunset from 7:20 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:427:20
213.65:427:20
313.65:437:21
413.75:437:22
513.75:437:23
613.75:437:23
713.75:437:24
813.75:437:25
913.75:437:25
1013.75:447:26
1113.75:447:27
1213.75:447:27
1313.75:447:28
1413.75:457:28
1513.75:457:29
1613.75:457:30
1713.75:467:30
1813.75:467:31
1913.75:477:31
2013.75:477:32
2113.75:477:32
2213.75:487:33
2313.75:487:33
2413.75:497:34
2513.75:497:34
2613.75:507:34
2713.75:507:35
2813.75:517:35
2913.75:527:36
3013.75:527:36
3113.75:537:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.56 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.56 kWh/m² in December across the year — December's 6.56 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in December

Is December a good time to visit Leandro N. Alem?

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

4.3
Sightseeing
10th-best month of the year
6.2
Beach & pool
4th-best month of the year

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

What to pack for Leandro N. Alem in December

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

In December, Leandro N. Alem sees daytime highs around 31°C and nights near 20°C. Pack light clothes, rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Leandro N. Alem 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 Leandro N. Alem peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateVery highExtremeJan 19UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Leandro N. Alem 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 Leandro N. Alem is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (March, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1317 µg/m³Mar 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar7Good
Apr7Good
May7Good
Jun8Good
Jul9Good
Aug14Moderate
Sep17Moderate
Oct11Good
Nov8Good
Dec7Good
Location & terrain

Where is Leandro N. Alem?

Leandro N. Alem sits at 27.6°S, 55.3°W, 302 m above sea level, in Argentina. The nearest listed city is Oberá, 24 km away.

Topography around Leandro N. Alem

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

Within 3 km, the terrain around Leandro N. Alem has only modest variations in elevation — a maximum elevation change of 128 m around an average of 293 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 257 m; within 80 km, significant variations in elevation — a maximum elevation change of 476 m.

The land around Leandro N. Alem is covered by trees (58%) and grassland (25%) within 3 km, trees (77%) and grassland (22%) within 16 km, and trees (56%) and grassland (27%) within 80 km.

3 km
128 m
16 km
257 m
80 km
476 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Oberá 24 km · Garupá 52 km · Apóstoles 55 km · Encarnación 62 km · Jardín América 63 km · Posadas 64 km · Trinidad 65 km · Santo Cristo 70 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 Leandro N. Alem (-27.6038°, -55.3237°, elevation 302 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).