Santo Tomé weather in May

In May, Santo Tomé sees average daytime highs of 20°C and overnight lows near 12°C, with 74 mm of rain across 6.1 wet days and about 10.4 hours of daylight. It is the 9th-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 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 06 min by month's end. Set against the rest of the year, May is Santo Tomé's 12th-clearest and 8th-windiest month. For the whole year in context, see Santo Tomé's year-round climate.

Daytime high
20°
9th warmest
Overnight low
12°
5th coldest
Rainfall
74 mm
6.1 wet days
Daylight
10 h 24 min
7:48 AM – 6:11 PM
Cloud cover
55%
12th clearest
Wind
11 km/h
8th windiest
Solar energy
2.86 kWh/m²
Travel score
7.0
out of 10

Santo Tomé is Argentinian municipality in Santa Fe province.

Density
748/km²
people per km²

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 Santo Tomé reaches about 20°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)
12213
22213
32213
42213
52213
62213
72213
82112
92112
102112
112112
122112
132112
142112
152112
162012
172012
182011
192011
202011
212011
222011
231911
241911
251911
261910
271910
281910
291910
301910
311910

Santo Tomé 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° / 20°1128.713.85.0
Feb29° / 20°1188.713.25.6
Mar28° / 18°1388.212.26.7
Apr24° / 15°1148.611.27.3
May20° / 12°746.110.47.0
Jun18° / 445.1106.4
Jul17° / 374.510.16.3
Aug20° / 484.910.87.3
Sep22° / 11°655.811.87.5
Oct25° / 14°1329.612.87.1
Nov27° / 16°1167.913.66.9
Dec29° / 19°1358.9145.6

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 14% of May, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55446
65446
75347
85347
95248
105248
115149
125149
135050
145050
154951
165050
174852
184852
194852
204852
214951
224951
234951
244852
254951
264951
275050
285050
295050
305050
315149

Chance of precipitation in May

Any precipitation

Santo Tomé gets around 74 mm of rain over 6.1 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 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
922
1021
1121
1221
1321
1421
1521
1620
1720
1820
1920
2019
2119
2219
2318
2418
2518
2617
2717
2817
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 61% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1492218101
2502118101
3512117101
4512216101
5522215101
653221591
753231491
855231480
955241380
1056241370
1155251370
1257251260
1357251260
1458251250
1559241250
1658241350
1760231340
1861221340
1962211340
2064191340
2165181340
2266171340
2367161340
2468151340
2570141240
2671131240
2773121140
2874121130
2975121030
3075121030
317711930

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 06 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 7:37 AM to 7:57 AM, and sunset from 6:24 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.87:376:24
210.77:386:23
310.77:386:22
410.77:396:21
510.77:406:20
610.67:416:19
710.67:416:18
810.67:426:17
910.67:436:16
1010.57:436:15
1110.57:446:15
1210.57:456:14
1310.57:456:13
1410.47:466:12
1510.47:476:12
1610.47:486:11
1710.47:486:10
1810.37:496:10
1910.37:506:09
2010.37:506:09
2110.37:516:08
2210.37:526:07
2310.27:526:07
2410.27:536:06
2510.27:546:06
2610.27:546:05
2710.27:556:05
2810.27:556:05
2910.17:566:04
3010.17:576:04
3110.17:576:04

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.86 kWh/m².

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 7.22 kWh/m² in December across the year — May's 2.86 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.0Moderate
113.0Moderate
123.0Moderate
132.9Moderate
142.9Moderate
152.9Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.6Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in May

Is May a good time to visit Santo Tomé?

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

7.0
Sightseeing
5th-best month of the year
3.9
Beach & pool
9th-best month of the year

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

What to pack for Santo Tomé in May

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

In May, Santo Tomé sees daytime highs around 20°C and nights near 12°C. Little to plan around — just the basics. About 6 days see rain.

UV index in Santo Tomé 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 Santo Tomé peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 17UV 13Jun 21UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7High
Oct9Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is Santo Tomé?

Santo Tomé sits at 31.7°S, 60.8°W, 19 m above sea level, in Argentina. The nearest listed city is Santa Fe, 6.0 km away.

Topography around Santo Tomé

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

Within 3 km, the terrain around Santo Tomé has only modest variations in elevation — a maximum elevation change of 30 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 40 m; within 80 km, only modest variations in elevation — a maximum elevation change of 116 m.

The land around Santo Tomé is covered by artificial surfaces (34%) and grassland (26%) within 3 km, grassland (31%) and cropland (28%) within 16 km, and cropland (59%) and grassland (22%) within 80 km.

3 km
30 m
16 km
40 m
80 km
116 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Santa Fe 6.0 km · Paraná 24 km · Esperanza 28 km · Coronda 38 km · Diamante 46 km · Gálvez 59 km · Crespo 60 km · Rafaela 83 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 Santo Tomé (-31.6627°, -60.7653°, elevation 19 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).