Posadas weather in January

In January, Posadas sees average daytime highs of 32°C and overnight lows near 22°C, with 133 mm of rain across 12.7 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 45% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 42 min at the start of January to 13 h 18 min by month's end. Set against the rest of the year, January is Posadas's 9th-clearest and 10th-windiest month. For the whole year in context, see Posadas's year-round climate.

Daytime high
32°
1st warmest
Overnight low
22°
12th coldest
Rainfall
133 mm
12.7 wet days
Daylight
13 h 36 min
6:06 AM – 7:40 PM
Cloud cover
51%
9th clearest
Wind
10 km/h
10th windiest
Solar energy
6.63 kWh/m²
Travel score
4.0
out of 10

Posadas is city in Argentina.

Density
317/km²
people per km²
Founded
1870

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical January day in Posadas reaches about 32°C in the afternoon and slips back to 22°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 35°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13222
23222
33222
43222
53222
63222
73222
83222
93222
103222
113222
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222
313222

How January really feels in Posadas

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Posadas weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°13312.713.54.0
Feb31° / 22°12911.9134.3
Mar30° / 21°12110.512.25.1
Apr27° / 18°1599.911.46.6
May23° / 15°1439.110.77.0
Jun21° / 13°1218.910.36.7
Jul21° / 12°1179.110.46.8
Aug23° / 13°907.9117.4
Sep25° / 15°1479.811.87.1
Oct27° / 17°21612.412.76.2
Nov29° / 19°15610.413.45.5
Dec31° / 21°16411.813.74.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55842
65842
75941
86040
96040
106040
116040
126040
136040
146139
156139
166139
176040
186040
196040
206040
216040
225941
235941
245941
255941
265941
275941
285941
295941
306040
316040

Chance of precipitation in January

Any precipitation

Posadas gets around 133 mm of rain over 12.7 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
540
640
740
840
940
1041
1141
1241
1341
1441
1541
1641
1741
1841
1941
2041
2141
2241
2341
2441
2542
2642
2742
2842
2942
3043
3143

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11415254511
21415244511
31415244611
41415244611
51415244710
61415234710
71315234810
8131524489
9131424499
10131424508
11131424517
12131325517
13231325516
14221225536
15221225545
16221226535
17221126554
18221126554
19221126554
20121126564
21121126564
22121026574
23121027564
24121027564
25121027564
2612927574
2702927575
2802927575
2902927575
3002928565
3102928556

Wind in January

Winds average 10 km/h in January.

Across January, daily wind ranges from about 10 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
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 42 min at the start of January to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 5:56 AM to 6:18 AM, and sunset from 7:38 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:567:38
213.75:567:38
313.75:577:38
413.75:587:39
513.75:587:39
613.75:597:39
713.76:007:39
813.66:007:39
913.66:017:39
1013.66:027:40
1113.66:037:40
1213.66:037:40
1313.66:047:40
1413.66:057:40
1513.66:067:40
1613.66:067:40
1713.56:077:40
1813.56:087:39
1913.56:097:39
2013.56:097:39
2113.56:107:39
2213.56:117:39
2313.46:127:39
2413.46:137:38
2513.46:137:38
2613.46:147:38
2713.46:157:38
2813.46:167:37
2913.36:167:37
3013.36:177:36
3113.36:187:36

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.63 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.74 kWh/m² in December across the year — January's 6.63 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.4Intense
266.4Intense
276.4Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in January

Is January a good time to visit Posadas?

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

4.0
Sightseeing
12th-best month of the year
6.2
Beach & pool
8th-best month of the year

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

What to pack for Posadas in January

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

In January, Posadas sees daytime highs around 32°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.

light clothessun protectionrain gear

UV index in Posadas in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Posadas 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 highHighModerateHighVery highExtremeJan 19UV 14Jun 21UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug5High
Sep8Very high
Oct7High
Nov11Extreme
Dec13Extreme

Air quality in Posadas in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Posadas is worst in September — around 19 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodSep 1319 µg/m³Mar 236 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Good
Mar6Good
Apr7Good
May7Good
Jun8Good
Jul10Good
Aug16Moderate
Sep19Moderate
Oct11Good
Nov15Moderate
Dec6Good
Location & terrain

Where is Posadas?

Posadas sits at 27.4°S, 55.9°W, 83 m above sea level, in Argentina. The nearest listed city is Encarnación, 9.0 km away.

Topography around Posadas

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

Within 3 km, the terrain around Posadas has only modest variations in elevation — a maximum elevation change of 72 m around an average of 116 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 139 m; within 80 km, significant variations in elevation — a maximum elevation change of 419 m.

The land around Posadas is covered by artificial surfaces (69%) and trees (22%) within 3 km, grassland (33%), trees (29%) and water (23%) within 16 km, and trees (40%) and grassland (30%) within 80 km.

3 km
72 m
16 km
139 m
80 km
419 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Encarnación 9.0 km · Garupá 14 km · Trinidad 36 km · Apóstoles 60 km · Leandro N. Alem 64 km · Gobernador Virasora 74 km · Ituzaingó 78 km · Jardín América 79 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 Posadas (-27.3918°, -55.9238°, elevation 83 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).