Santo Tomé weather in January

In January, Santo Tomé sees average daytime highs of 32°C and overnight lows near 22°C, with 160 mm of rain across 12 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 43% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of January to 13 h 24 min by month's end. Set against the rest of the year, January is Santo Tomé's 9th-clearest and 9th-windiest month. For the whole year in context, see Santo Tomé's year-round climate.

Daytime high
32°
1st warmest
Overnight low
22°
12th coldest
Rainfall
160 mm
12 wet days
Daylight
13 h 36 min
6:04 AM – 7:42 PM
Cloud cover
51%
9th clearest
Wind
11 km/h
9th windiest
Solar energy
6.66 kWh/m²
Travel score
3.9
out of 10

Santo Tomé is city in Corrientes, Argentina.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical January day in Santo Tomé reaches about 32°C in the afternoon and slips back to 22°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 36°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13222
23222
33222
43222
53222
63222
73222
83222
93222
103222
113222
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222
313222

How January really feels in Santo Tomé

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Santo Tomé weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 4th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35941
45941
55842
65842
75842
85941
95941
105941
115941
125941
135941
145941
155941
165842
175941
185941
195941
205842
215842
225941
235842
245842
255842
265842
275842
285842
295842
305842
315842

Chance of precipitation in January

Any precipitation

Santo Tomé gets around 160 mm of rain over 12 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
538
638
738
838
938
1038
1138
1238
1338
1438
1539
1639
1739
1839
1939
2039
2139
2240
2340
2440
2540
2641
2741
2841
2941
3042
3142

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1292025378
2291925388
3291924388
4291925388
5291825388
6291825398
7291725397
8291726397
9391627397
10391627396
11391528406
12391529405
13391429404
14381430414
15381430414
16381431413
17381431413
18381431422
19371431422
20371432422
21371432432
22371432432
23261432442
24261432442
25251432452
26151432462
27151432462
28151432472
29151332473
30151332473
31151331473

Wind in January

Winds average 11 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 13 h 48 min at the start of January to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 5:54 AM to 6:17 AM, and sunset from 7:41 PM to 7:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:547:41
213.85:547:41
313.85:557:41
413.85:567:42
513.85:567:42
613.85:577:42
713.75:587:42
813.75:587:42
913.75:597:42
1013.76:007:43
1113.76:017:43
1213.76:017:43
1313.76:027:43
1413.76:037:43
1513.66:047:43
1613.66:047:42
1713.66:057:42
1813.66:067:42
1913.66:077:42
2013.66:087:42
2113.66:087:42
2213.56:097:42
2313.56:107:41
2413.56:117:41
2513.56:127:41
2613.56:127:40
2713.46:137:40
2813.46:147:40
2913.46:157:39
3013.46:167:39
3113.46:177:38

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.66 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 — January's 6.66 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.6Intense
206.6Intense
216.6Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.4Intense
276.4Intense
286.4Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in January

Is January a good time to visit Santo Tomé?

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

3.9
Sightseeing
12th-best month of the year
6.2
Beach & pool
7th-best month of the year

January is a weaker month for outdoor sightseeing in Santo Tomé. The water and warmth also suit a beach or pool day.

What to pack for Santo Tomé in January

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

In January, Santo Tomé sees daytime highs around 32°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.

light clothessun protectionrain gear

UV index in Santo Tomé in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).