Mercedes weather in May

In May, Mercedes sees average daytime highs of 18°C and overnight lows near 9°C, with 64 mm of rain across 6.2 wet days and about 10.2 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 17°C by the end. The sky is clear or mostly clear about 35% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Mercedes's 12th-clearest and 10th-windiest month. For the whole year in context, see Mercedes's year-round climate.

Daytime high
18°
9th warmest
Overnight low
5th coldest
Rainfall
64 mm
6.2 wet days
Daylight
10 h 12 min
7:48 AM – 6:00 PM
Cloud cover
57%
12th clearest
Wind
12 km/h
10th windiest
Solar energy
2.65 kWh/m²
Travel score
6.5
out of 10

Mercedes is city in Buenos Aires Province, Argentina.

Founded
1745

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 20°C in the first days to 17°C by the end.

A typical May day in Mercedes reaches about 18°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°C. Set against its neighbours, May runs about 4°C cooler than April and about 3°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12010
22010
32010
42010
52010
62010
72010
82010
92010
101910
111910
12199
13199
14199
15199
16199
17189
18189
19189
20189
21189
22188
23178
24178
25178
26178
27178
28178
29178
30177
31167

Mercedes weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 18°93814.15.8
Feb28° / 17°96813.36.4
Mar26° / 15°887.512.37.3
Apr22° / 12°1008.411.27.2
May18° / 646.210.26.5
Jun15° / 515.79.75.2
Jul15° / 485.59.94.8
Aug17° / 575.210.76.1
Sep19° / 676.511.86.7
Oct22° / 11°1119.512.96.8
Nov25° / 14°958.413.87.2
Dec28° / 16°919.214.36.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35545
45545
55644
65545
75545
85545
95446
105347
115347
125248
135149
145050
155050
164852
174852
184753
194753
204654
214555
224456
234456
244357
254357
264357
274456
284456
294456
304555
314555

Chance of precipitation in May

Any precipitation

Mercedes gets around 64 mm of rain over 6.2 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 21% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
123
222
322
421
521
620
720
820
919
1019
1119
1220
1320
1420
1521
1621
1721
1822
1922
2022
2122
2222
2321
2421
2521
2620
2720
2819
2919
3018
3118

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16820102
26820102
36919102
46919102
5701992
6701992
7711892
8721882
9731881
10741781
11751771
12751771
13761671
14761671
15761671
16761671
17761671
18771571
19771571
20771571
21781471
22791371
23791371
24801271
25811261
26821161
27821161
28841051
29841051
30851041
3186941

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

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
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
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 36 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over May. Sunrise moves from 7:36 AM to 7:59 AM, and sunset from 6:14 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.67:366:14
210.67:376:13
310.67:386:12
410.57:396:11
510.57:396:10
610.57:406:09
710.47:416:08
810.47:426:07
910.47:436:06
1010.47:436:05
1110.37:446:04
1210.37:456:03
1310.37:466:02
1410.27:476:01
1510.27:476:01
1610.27:486:00
1710.27:495:59
1810.17:505:58
1910.17:505:58
2010.17:515:57
2110.17:525:56
2210.07:535:56
2310.07:535:55
2410.07:545:54
2510.07:555:54
2610.07:565:53
279.97:565:53
289.97:575:52
299.97:585:52
309.97:585:52
319.97:595:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.65 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 7.43 kWh/m² in December across the year — May's 2.65 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.0Moderate
53.0Moderate
63.0Moderate
73.0Moderate
82.9Moderate
92.9Moderate
102.9Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.7Moderate
152.7Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.3Moderate
312.3Moderate
Planning a trip in May

Is May a good time to visit Mercedes?

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

6.5
Sightseeing
6th-best month of the year
2.5
Beach & pool
9th-best month of the year

May is a reasonable time to visit Mercedes for sightseeing.

What to pack for Mercedes in May

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

In May, Mercedes sees daytime highs around 18°C and nights near 9°C. Little to plan around — just the basics. About 6 days see rain.

UV index in Mercedes in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mercedes peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Mercedes 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 Mercedes is worst in August — around 20 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodAug 1619 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar12Moderate
Apr11Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug20Moderate
Sep15Moderate
Oct13Moderate
Nov10Good
Dec11Good
Location & terrain

Where is Mercedes?

Mercedes sits at 34.7°S, 59.4°W, 40 m above sea level, in Argentina. The nearest listed city is Luján, 30 km away.

Topography around Mercedes

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

Within 3 km, the terrain around Mercedes has only modest variations in elevation — a maximum elevation change of 24 m around an average of 38 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 49 m; within 80 km, only modest variations in elevation — a maximum elevation change of 89 m.

The land around Mercedes is covered by artificial surfaces (35%), grassland (33%) and trees (21%) within 3 km, cropland (55%) and grassland (36%) within 16 km, and cropland (62%) and grassland (26%) within 80 km.

3 km
24 m
16 km
49 m
80 km
89 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Luján 30 km · Navarro 42 km · San Antonio de Areco 45 km · Carmen de Areco 47 km · Pilar 52 km · Moreno 59 km · Chivilcoy 60 km · José C. Paz 63 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 Mercedes (-34.6507°, -59.4314°, elevation 40 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).