San Javier weather in May

In May, San Javier sees average daytime highs of 21°C and overnight lows near 12°C, with 83 mm of rain across 6 wet days and about 10.5 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 37% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of May to 10 h 12 min by month's end. Set against the rest of the year, May is San Javier's 12th-clearest and 8th-windiest month. For the whole year in context, see San Javier's year-round climate.

Daytime high
21°
9th warmest
Overnight low
12°
5th coldest
Rainfall
83 mm
6 wet days
Daylight
10 h 30 min
7:42 AM – 6:10 PM
Cloud cover
56%
12th clearest
Wind
11 km/h
8th windiest
Solar energy
2.9 kWh/m²
Travel score
7.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 19°C by the end.

A typical May day in San Javier reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°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)
12314
22314
32314
42313
52213
62213
72213
82213
92213
102213
112213
122213
132113
142113
152112
162112
172112
182112
192112
202112
212012
222012
232011
242011
252011
262011
272011
282011
291911
301911
311910

How May really feels in San Javier

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.

San Javier weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°1279.413.84.6
Feb30° / 20°1188.813.15.1
Mar28° / 18°1179.112.26.2
Apr25° / 15°1388.911.37.2
May21° / 12°83610.57.1
Jun18° / 10°615.610.16.6
Jul18° / 435.210.26.8
Aug21° / 10°635.310.97.4
Sep23° / 12°766.711.87.6
Oct25° / 15°1379.512.87.1
Nov28° / 17°1197.613.56.6
Dec30° / 19°1378.713.95.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35446
45347
55347
65347
75149
85149
95149
104951
114951
124852
134852
144852
154654
164654
174654
184654
194555
204555
214555
224654
234654
244654
254753
264852
274852
284951
294951
304951
315050

Chance of precipitation in May

Any precipitation

San Javier gets around 83 mm of rain over 6 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 20% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
324
424
523
623
722
822
921
1021
1121
1220
1320
1420
1520
1620
1719
1819
1919
2018
2118
2218
2317
2417
2517
2617
2716
2816
2916
3016
3116

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1432019162
2441919162
3451919152
4461919152
5471919142
6471919132
7481919122
8492019112
9492019101
10502019101
1150202091
1250212081
1351202081
1452202071
1552202071
1653202070
1754192070
1855192060
1957181960
2058171960
2158171861
2260161761
2361151761
2463141661
2564141561
2666131461
2766131461
2868131351
2969131251
3069131251
3170131151

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
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 10 h 48 min at the start of May to 10 h 12 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 7:32 AM to 7:52 AM, and sunset from 6:22 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.87:326:22
210.87:336:21
310.87:336:20
410.77:346:19
510.77:356:18
610.77:356:17
710.77:366:16
810.67:376:16
910.67:376:15
1010.67:386:14
1110.67:396:13
1210.57:406:12
1310.57:406:12
1410.57:416:11
1510.57:426:10
1610.57:426:10
1710.47:436:09
1810.47:436:09
1910.47:446:08
2010.47:456:07
2110.47:456:07
2210.37:466:06
2310.37:476:06
2410.37:476:05
2510.37:486:05
2610.37:496:04
2710.27:496:04
2810.27:506:04
2910.27:506:03
3010.27:516:03
3110.27:526:03

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.9 kWh/m².

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 7.1 kWh/m² in December across the year — May's 2.9 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.9Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in May

Is May a good time to visit San Javier?

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

7.1
Sightseeing
4th-best month of the year
4.4
Beach & pool
9th-best month of the year

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

What to pack for San Javier in May

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

In May, San Javier sees daytime highs around 21°C and nights near 12°C. Little to plan around — just the basics. About 6 days see rain.

UV index in San Javier 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 San Javier peaks around January 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 13Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7Very high
Oct8Very high
Nov11Extreme
Dec13Extreme

Air quality in San Javier 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 San Javier is worst in August — around 22 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (May, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1721 µg/m³May 116 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb8Good
Mar6Good
Apr6Good
May6Good
Jun7Good
Jul13Moderate
Aug22Moderate
Sep15Moderate
Oct9Good
Nov6Good
Dec7Good
Location & terrain

Where is San Javier?

San Javier sits at 30.6°S, 59.9°W, 30 m above sea level, in Argentina. The nearest listed city is La Paz, 33 km away.

Topography around San Javier

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

Within 3 km, the terrain around San Javier has only modest variations in elevation — a maximum elevation change of 29 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 36 m; within 80 km, only modest variations in elevation — a maximum elevation change of 78 m.

The land around San Javier is covered by wetland (50%) and grassland (20%) within 3 km, wetland (71%) within 16 km, and grassland (27%), wetland (26%) and cropland (23%) within 80 km.

3 km
29 m
16 km
36 m
80 km
78 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: La Paz 33 km · Santa Elena 43 km · San Justo 68 km · Esquina 74 km · Federal 118 km · Vera 128 km · Esperanza 136 km · Santa Fe 140 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 San Javier (-30.5807°, -59.9296°, elevation 30 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).