Posadas weather in May

In May, Posadas sees average daytime highs of 23°C and overnight lows near 15°C, with 143 mm of rain across 9.1 wet days and about 10.7 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 39% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of May to 10 h 24 min by month's end. Set against the rest of the year, May is Posadas's 10th-clearest and 7th-windiest month. For the whole year in context, see Posadas's year-round climate.

Daytime high
23°
10th warmest
Overnight low
15°
4th coldest
Rainfall
143 mm
9.1 wet days
Daylight
10 h 42 min
7:20 AM – 5:59 PM
Cloud cover
54%
10th clearest
Wind
11 km/h
7th windiest
Solar energy
3.1 kWh/m²
Travel score
7.0
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical May day in Posadas reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, May runs about 4°C cooler than April and about 2°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12516
22516
32516
42516
52416
62415
72415
82415
92415
102415
112415
122315
132315
142315
152315
162314
172314
182314
192314
202214
212214
222214
232214
242214
252214
262214
272213
282213
292213
302113
312113

How May really feels in Posadas

Once humidity and wind are folded in, May 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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Posadas weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55446
65446
75446
85446
95347
105347
115347
125347
135248
145248
155248
165149
175149
185050
195050
205050
215050
225050
234951
245050
255050
264951
274951
284951
295050
305050
315050

Chance of precipitation in May

Any precipitation

Posadas gets around 143 mm of rain over 9.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
429
529
629
729
829
929
1029
1129
1229
1329
1430
1530
1630
1730
1830
1930
2030
2130
2230
2330
2429
2529
2629
2729
2829
2929
3028
3128

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1211927257
2222027256
3232026255
4242126245
5252225244
6252325244
7262325233
8262425233
9272424222
10272524212
11282524212
12282624201
13282624201
14292625191
15292725191
16302725181
17302725171
18312725161
19322725151
20332725151
21342625141
22352625131
23362624121
24382624121
25392524111
26402524111
27402523101
28412523101
29422423101
30422423101
31432323101

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 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
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 hours at the start of May to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 7:12 AM to 7:29 AM, and sunset from 6:10 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:126:10
210.97:126:09
310.97:136:08
410.97:136:08
510.97:146:07
610.97:156:06
710.87:156:05
810.87:166:05
910.87:166:04
1010.87:176:03
1110.87:176:03
1210.77:186:02
1310.77:196:01
1410.77:196:01
1510.77:206:00
1610.77:205:59
1710.67:215:59
1810.67:225:58
1910.67:225:58
2010.67:235:57
2110.67:235:57
2210.57:245:56
2310.57:245:56
2410.57:255:56
2510.57:265:55
2610.57:265:55
2710.57:275:55
2810.57:275:54
2910.47:285:54
3010.47:285:54
3110.47:295:53

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.1 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 — May's 3.1 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.4Moderate
73.4Moderate
83.4Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Is May a good time to visit Posadas?

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

7.0
Sightseeing
3rd-best month of the year
5.4
Beach & pool
10th-best month of the year

May is one of the better times to visit Posadas for general sightseeing.

What to pack for Posadas in May

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

In May, Posadas sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Posadas in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 5 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).