Santo Tomé weather in April

In April, Santo Tomé sees average daytime highs of 27°C and overnight lows near 17°C, with 168 mm of rain across 10.1 wet days and about 11.3 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 25°C by the end. The sky is clear or mostly clear about 44% of the time in April, and the air most often feels muggy.

Daylight stretches from about 11 h 42 min at the start of April to 10 h 54 min by month's end. Set against the rest of the year, April is Santo Tomé's 5th-clearest and 10th-windiest month. For the whole year in context, see Santo Tomé's year-round climate.

Daytime high
27°
6th warmest
Overnight low
17°
7th coldest
Rainfall
168 mm
10.1 wet days
Daylight
11 h 18 min
7:05 AM – 6:24 PM
Cloud cover
50%
5th clearest
Wind
11 km/h
10th windiest
Solar energy
4.02 kWh/m²
Travel score
6.7
out of 10

Santo Tomé is city in Corrientes, Argentina.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 25°C by the end.

A typical April day in Santo Tomé reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 32°C. Set against its neighbours, April runs about 3°C cooler than March and about 4°C warmer than May.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12918
22818
32818
42818
52818
62818
72818
82818
92818
102718
112717
122717
132717
142717
152717
162617
172617
182617
192616
202616
212616
222616
232616
242516
252516
262516
272516
282515
292515
302515

How April really feels in Santo Tomé

Once humidity and wind are folded in, April 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

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Santo Tomé weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°1601213.63.9
Feb31° / 21°13311.5134.3
Mar30° / 20°12710.112.25.2
Apr27° / 17°16810.111.36.7
May23° / 14°1218.410.67.1
Jun21° / 12°1159.410.26.5
Jul20° / 11°117910.46.7
Aug23° / 12°1008.5117.2
Sep24° / 14°15410.411.87.0
Oct27° / 16°21712.212.76.3
Nov29° / 18°1609.413.45.7
Dec31° / 20°16110.813.84.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55842
65644
75644
85644
95644
105644
115644
125644
135644
145644
155545
165545
175545
185545
195545
205545
215446
225446
235446
245446
255545
265446
275446
285446
295347
305446

Chance of precipitation in April

Any precipitation

Santo Tomé gets around 168 mm of rain over 10.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
231
331
431
532
632
732
833
933
1033
1134
1234
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2333
2433
2532
2631
2731
2830
2929
3028

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 42% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19142435180
210142434180
310152334181
410152334181
511152333181
611162232181
712162232181
812162231181
913172230181
1013172229181
1114182228171
1214182228171
1315192327170
1415192327160
1516192326160
1616192426150
1716202425150
1817202425140
1918202524130
2018202524130
2119202524120
2220202624110
2320202624100
242120262490
252220262390
262320262380
272420262370
282520252370
292620252360
302720252350

Wind in April

Winds average 11 km/h in April.

Across April, 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.

051015151015202530
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 42 min at the start of April to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over April. Sunrise moves from 6:56 AM to 7:13 AM, and sunset from 6:41 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:566:41
211.76:576:40
311.76:586:39
411.76:586:38
511.66:596:36
611.66:596:35
711.67:006:34
811.57:006:33
911.57:016:32
1011.57:016:31
1111.57:026:29
1211.47:036:28
1311.47:036:27
1411.47:046:26
1511.37:046:25
1611.37:056:24
1711.37:056:23
1811.37:066:22
1911.27:076:21
2011.27:076:20
2111.27:086:19
2211.27:086:18
2311.17:096:17
2411.17:106:16
2511.17:106:15
2611.07:116:14
2711.07:116:13
2811.07:126:12
2911.07:136:11
3010.97:136:10

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.02 kWh/m².

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 6.83 kWh/m² in December across the year — April's 4.02 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.0Bright
164.0Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.8Moderate
233.7Moderate
243.7Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in April

Is April a good time to visit Santo Tomé?

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

6.7
Sightseeing
4th-best month of the year
6.7
Beach & pool
3rd-best month of the year

April is a reasonable time to visit Santo Tomé for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Santo Tomé in April

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

In April, Santo Tomé sees daytime highs around 27°C and nights near 17°C. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in Santo Tomé in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santo Tomé peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 20UV 14Jun 20UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct6High
Nov11Extreme
Dec12Extreme

Air quality in Santo Tomé in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Santo Tomé is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (March, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodSep 1116 µg/m³Mar 226 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb14Moderate
Mar6Good
Apr7Good
May6Good
Jun7Good
Jul10Good
Aug15Moderate
Sep16Moderate
Oct9Good
Nov9Good
Dec6Good
Location & terrain

Where is Santo Tomé?

Santo Tomé sits at 28.6°S, 56.0°W, 67 m above sea level, in Argentina. The nearest listed city is São Borja, 13 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 47 m around an average of 67 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 78 m; within 80 km, only modest variations in elevation — a maximum elevation change of 203 m.

The land around Santo Tomé is covered by trees (28%) and grassland (27%) within 3 km, grassland (28%), trees (26%) and cropland (20%) within 16 km, and grassland (39%), cropland (22%) and wetland (21%) within 80 km.

3 km
47 m
16 km
78 m
80 km
203 m
treesgrasslandcroplandartificial surfaceswaterwetland
April weather nearby: São Borja 13 km · Gobernador Virasora 56 km · Apóstoles 76 km · Itaqui 81 km · São Luiz Gonzaga 107 km · Garupá 121 km · Ituzaingó 125 km · Leandro N. Alem 127 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 (-28.551°, -56.0412°, elevation 67 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).