Asuncion weather in May

In May, Asuncion sees average daytime highs of 24°C and overnight lows near 16°C, with 136 mm of rain across 8.8 wet days and about 10.8 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 40% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of May to 10 h 36 min by month's end. Set against the rest of the year, May is Asuncion's 10th-clearest and 7th-windiest month. For the whole year in context, see Asuncion's year-round climate.

Daytime high
24°
10th warmest
Overnight low
16°
4th coldest
Rainfall
136 mm
8.8 wet days
Daylight
10 h 48 min
7:24 AM – 6:10 PM
Cloud cover
54%
10th clearest
Wind
12 km/h
7th windiest
Solar energy
3.25 kWh/m²
Travel score
7.1
out of 10

Asuncion is capital of Paraguay.

Air quality
Elevated
PM2.5 18.4 µg/m³ · 2010
Density
12,668/km²
people per km²
Founded
1537

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 26°C in the first days to 23°C by the end.

A typical May day in Asuncion reaches about 24°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 30°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)
12617
22617
32617
42617
52617
62617
72617
82516
92516
102516
112516
122516
132516
142516
152516
162416
172416
182415
192415
202415
212415
222415
232315
242315
252315
262315
272315
282315
292315
302315
312315

How May really feels in Asuncion

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.

Asuncion 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
Jan33° / 23°12112.413.43.3
Feb32° / 23°14112.512.93.6
Mar31° / 22°11910.612.24.5
Apr28° / 19°1559.711.46.0
May24° / 16°1368.810.87.1
Jun23° / 14°1018.610.57.1
Jul23° / 13°757.710.67.4
Aug25° / 14°646.411.17.7
Sep27° / 16°1078.611.86.9
Oct29° / 19°18511.912.65.2
Nov30° / 20°19011.413.24.7
Dec32° / 22°16112.713.53.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65545
75545
85446
95347
105248
115347
125248
135248
145149
155050
165050
175050
185050
195050
205050
215050
224951
234951
244951
254852
264852
274852
284852
294951
304951
314951

Chance of precipitation in May

Any precipitation

Asuncion gets around 136 mm of rain over 8.8 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
428
528
627
727
827
926
1026
1126
1226
1326
1427
1527
1627
1728
1828
1929
2029
2129
2229
2330
2430
2530
2630
2730
2830
2930
3030
3130

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 27% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11816213312
21916213311
32017213310
4211720329
5211820329
6221820318
7231921308
8231921307
9241921297
10242022287
11252022276
12252023266
13252023256
14262124246
15262124246
16262124235
17272224225
18282224215
19282224205
20292224195
21302224195
22312224185
23322324184
24322323174
25332323174
26342323174
27352322174
28352222174
29362222173
30362122173
31362122173

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 06 min at the start of May to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over May. Sunrise moves from 7:16 AM to 7:31 AM, and sunset from 6:20 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:166:20
211.07:166:19
311.07:176:18
411.07:176:17
511.07:186:17
611.07:186:16
710.97:196:15
810.97:196:15
910.97:206:14
1010.97:216:13
1110.97:216:13
1210.87:226:12
1310.87:226:12
1410.87:236:11
1510.87:236:10
1610.87:246:10
1710.87:246:09
1810.77:256:09
1910.77:256:09
2010.77:266:08
2110.77:266:08
2210.77:276:07
2310.77:276:07
2410.67:286:07
2510.67:286:06
2610.67:296:06
2710.67:296:06
2810.67:306:05
2910.67:306:05
3010.67:316:05
3110.67:316:05

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.25 kWh/m².

For context, solar energy here swings from a low near 2.77 kWh/m² to a high of 6.75 kWh/m² in January across the year — May's 3.25 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.2Moderate
173.2Moderate
183.2Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.0Moderate
233.0Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.9Moderate
312.9Moderate
Planning a trip in May

Is May a good time to visit Asuncion?

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

7.1
Sightseeing
3rd-best month of the year
6.2
Beach & pool
7th-best month of the year

May is one of the better times to visit Asuncion for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Asuncion in May

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

In May, Asuncion sees daytime highs around 24°C and nights near 16°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Asuncion in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Asuncion peaks around January 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 17UV 15Jul 15UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr9Very high
May6High
Jun5Moderate
Jul5Moderate
Aug5High
Sep8Very high
Oct8Very high
Nov12Extreme
Dec13Extreme

Air quality in Asuncion 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 Asuncion is worst in September — around 33 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Asuncion's WHO annual average of 18.4 µg/m³.

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 932 µg/m³Dec 1312 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb18Moderate
Mar18Moderate
Apr13Moderate
May13Moderate
Jun14Moderate
Jul17Moderate
Aug32Moderate
Sep33Moderate
Oct21Moderate
Nov14Moderate
Dec12Good
Location & terrain

Where is Asuncion?

Asuncion sits at 25.3°S, 57.6°W, 113 m above sea level, in Paraguay. The nearest listed city is Lambaré, 8.0 km away.

Topography around Asuncion

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

Within 3 km, the terrain around Asuncion has only modest variations in elevation — a maximum elevation change of 98 m around an average of 81 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 500 m.

The land around Asuncion is covered by artificial surfaces (49%), trees (26%) and water (20%) within 3 km, trees (43%), grassland (31%) and artificial surfaces (22%) within 16 km, and grassland (51%) and trees (42%) within 80 km.

3 km
98 m
16 km
139 m
80 km
500 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Lambaré 8.0 km · Villa Elisa 11 km · Fernando de la Mora 14 km · Mariano Roque Alonso 14 km · San Lorenzo 15 km · Nemby 16 km · San Antonio 18 km · Limpio 21 km

Paraguay travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / N
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$7,027
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
64%
of population, 2024
Homicide rate
6.8
per 100k, 2023
Road deaths
22
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 531
Religion
Roman Catholic 80%Protestant 7%Believer 6%other 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 Asuncion (-25.2865°, -57.647°, elevation 113 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).