Libertador General San Martín weather in May

In May, Libertador General San Martín sees average daytime highs of 21°C and overnight lows near 11°C, with 101 mm of rain across 16 wet days and about 10.9 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 25% 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 42 min by month's end. Set against the rest of the year, May is Libertador General San Martín's 7th-clearest and 11th-windiest month. For the whole year in context, see Libertador General San Martín's year-round climate.

Daytime high
21°
10th warmest
Overnight low
11°
4th coldest
Rainfall
101 mm
16 wet days
Daylight
10 h 54 min
7:50 AM – 6:41 PM
Cloud cover
67%
7th clearest
Wind
4 km/h
11th windiest
Solar energy
3.36 kWh/m²
Travel score
5.4
out of 10

Libertador General San Martín is human settlement.

Founded
1899

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 22°C in the first days to 19°C by the end.

A typical May day in Libertador General San Martín reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, May runs about 3°C cooler than April and about 2°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72212
82112
92112
102112
112112
122112
132112
142111
152111
162011
172011
182011
192011
202010
212010
222010
232010
242010
251910
261910
27199
28199
29199
30199
31199

Libertador General San Martín weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°23217.513.34.4
Feb28° / 19°23917.712.84.7
Mar26° / 18°27520.712.24.8
Apr24° / 15°19618.811.55.3
May21° / 11°1011610.95.4
Jun19° / 5010.310.66.0
Jul19° / 316.610.76.9
Aug23° / 254.611.28.1
Sep26° / 11°366.311.97.6
Oct28° / 16°10311.512.66.0
Nov29° / 17°1651413.25.1
Dec29° / 19°24116.713.44.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 10% of May, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33169
43268
53169
63169
73268
83169
93268
103268
113268
123367
133268
143367
153367
163367
173367
183466
193664
203664
213664
223763
233763
243763
253763
263961
273961
284060
293961
304060
314060

Chance of precipitation in May

Any precipitation

Libertador General San Martín gets around 101 mm of rain over 16 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 52% and peaks near 59% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
159
259
358
458
557
657
756
856
956
1055
1155
1255
1354
1454
1554
1653
1752
1852
1951
2050
2149
2249
2348
2447
2546
2645
2744
2844
2943
3042
3142

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1292431151
2302531141
3322530131
4332629121
5342629111
6352728100
735282790
836292680
937302570
1039312560
1140312450
1241322340
1343322240
1444322130
1546322030
1647321920
1749321820
1850311720
1952311610
2054301510
2156291410
2257291310
2359281210
2460271210
2562261110
2664251100
2766241000
2867231000
296922900
306922900
317022800

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 06 min at the start of May to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over May. Sunrise moves from 7:43 AM to 7:57 AM, and sunset from 6:50 PM to 6:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.17:436:50
211.17:436:49
311.17:446:49
411.17:446:48
511.07:446:47
611.07:456:47
711.07:456:46
811.07:466:45
911.07:466:45
1011.07:476:44
1110.97:476:44
1210.97:486:43
1310.97:486:43
1410.97:496:42
1510.97:496:41
1610.97:506:41
1710.87:506:41
1810.87:516:40
1910.87:516:40
2010.87:526:39
2110.87:526:39
2210.87:536:39
2310.77:536:38
2410.77:546:38
2510.77:546:38
2610.77:556:37
2710.77:556:37
2810.77:566:37
2910.77:566:36
3010.77:576:36
3110.77:576:36

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.36 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.36 kWh/m² to a high of 5.67 kWh/m² in December across the year — May's 3.36 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.4Moderate
103.4Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.3Moderate
163.3Moderate
173.3Moderate
183.3Moderate
193.3Moderate
203.3Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.3Moderate
293.3Moderate
303.3Moderate
313.3Moderate
Planning a trip in May

Hazard calendar for Libertador General San Martín

In seasonPeak

None of Libertador General San Martín's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Libertador General San Martín's rainy season runs November–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Libertador General San Martín?

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

5.4
Sightseeing
6th-best month of the year
3.1
Beach & pool
10th-best month of the year

May is a reasonable time to visit Libertador General San Martín for sightseeing.

What to pack for Libertador General San Martín in May

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

In May, Libertador General San Martín sees daytime highs around 21°C and nights near 11°C. Pack rain gear. About 16 days see rain.

rain gear

UV index in Libertador General San Martín in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Libertador General San Martín peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 18UV 15Jul 10UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr8Very high
May7High
Jun5High
Jul5High
Aug8Very high
Sep9Very high
Oct9Very high
Nov13Extreme
Dec14Extreme

Air quality in Libertador General San Martín 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 Libertador General San Martín is worst in September — around 26 µg/m³ PM2.5 (moderate), about 5.6× the cleanest month (May, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateSep 2326 µg/m³May 155 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar7Good
Apr6Good
May5Good
Jun6Good
Jul8Good
Aug13Moderate
Sep26Moderate
Oct26Moderate
Nov19Moderate
Dec13Moderate
Location & terrain

Where is Libertador General San Martín?

Libertador General San Martín sits at 23.8°S, 64.8°W, 464 m above sea level, in Argentina. The nearest listed city is San Pedro de Jujuy, 47 km away.

Topography around Libertador General San Martín

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Libertador General San Martín.

Within 3 km, the terrain around Libertador General San Martín has significant variations in elevation — a maximum elevation change of 324 m around an average of 488 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,160 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,815 m.

The land around Libertador General San Martín is covered by cropland (45%), trees (27%) and artificial surfaces (21%) within 3 km, trees (64%) and cropland (29%) within 16 km, and trees (64%) within 80 km.

3 km
324 m
16 km
1,160 m
80 km
4,815 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: San Pedro de Jujuy 47 km · Santa Rosa 60 km · Palpalá 65 km · San Salvador de Jujuy 66 km · Pichanal 81 km · San Ramón de la Nueva Orán 89 km · Embarcación 97 km · General Güemes 99 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 Libertador General San Martín (-23.8131°, -64.7935°, elevation 464 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).