Formosa weather in January

In January, Formosa sees average daytime highs of 33°C and overnight lows near 23°C, with 119 mm of rain across 11.1 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 44% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 13 h 36 min at the start of January to 13 h 12 min by month's end. Set against the rest of the year, January is Formosa's 7th-clearest and 10th-windiest month. For the whole year in context, see Formosa's year-round climate.

Daytime high
33°
1st warmest
Overnight low
23°
12th coldest
Rainfall
119 mm
11.1 wet days
Daylight
13 h 30 min
6:18 AM – 7:46 PM
Cloud cover
50%
7th clearest
Wind
12 km/h
10th windiest
Solar energy
6.74 kWh/m²
Travel score
3.5
out of 10

Formosa is city in Argentina.

Density
2,963/km²
people per km²
Founded
1879

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 33°C through the month.

A typical January day in Formosa reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 37°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)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323
313323

How January really feels in Formosa

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.

Formosa weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 23°11911.113.53.5
Feb32° / 23°13711.512.93.8
Mar31° / 21°12810.912.24.7
Apr28° / 18°1539.511.46.3
May24° / 15°1288.410.77.2
Jun22° / 14°998.410.47.0
Jul22° / 12°787.510.57.3
Aug24° / 14°646.611.17.8
Sep26° / 16°1118.611.87.1
Oct29° / 18°18411.512.65.7
Nov30° / 20°18210.613.35.0
Dec32° / 22°16211.413.64.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35941
45941
56040
66040
76139
86139
96139
106139
116139
126139
136139
146139
156040
166040
176040
185941
195941
205941
215941
225941
235941
245941
255941
265941
275941
285941
295941
305941
315941

Chance of precipitation in January

Any precipitation

Formosa gets around 119 mm of rain over 11.1 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 37% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
336
436
536
635
735
834
934
1034
1134
1234
1335
1435
1536
1636
1737
1837
1937
2037
2138
2238
2338
2438
2539
2639
2740
2840
2940
3040
3140

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11513234514
21513234415
31513234316
41513234316
51513234316
61413234216
71413234216
81413244216
91413244216
102413244215
112413244314
122313244414
132313244513
142313244612
152313254612
162313254711
172212254810
182212244910
19221224519
20221224528
21221224528
22121224547
23121124557
24121124557
25121124557
26121024567
27021024577
2802924587
2902924587
3003924577
3103925567

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 36 min at the start of January to 13 h 12 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 6:07 AM to 6:29 AM, and sunset from 7:44 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:077:44
213.66:087:45
313.66:097:45
413.66:097:45
513.66:107:45
613.66:117:45
713.66:117:46
813.66:127:46
913.66:137:46
1013.56:137:46
1113.56:147:46
1213.56:157:46
1313.56:167:46
1413.56:167:46
1513.56:177:46
1613.56:187:46
1713.56:197:46
1813.46:197:46
1913.46:207:46
2013.46:217:46
2113.46:217:46
2213.46:227:46
2313.46:237:45
2413.46:247:45
2513.36:257:45
2613.36:257:45
2713.36:267:44
2813.36:277:44
2913.36:287:44
3013.36:287:43
3113.26:297:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.74 kWh/m².

For context, solar energy here swings from a low near 2.67 kWh/m² to a high of 6.75 kWh/m² in December across the year — January's 6.74 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.9Intense
56.9Intense
66.9Intense
76.9Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.4Intense
Planning a trip in January

Is January a good time to visit Formosa?

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

3.5
Sightseeing
12th-best month of the year
6.1
Beach & pool
9th-best month of the year

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

What to pack for Formosa in January

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

In January, Formosa sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Formosa in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Formosa peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateVery highExtremeJan 18UV 14Jun 21UV 4
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun4Moderate
Jul5Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov12Extreme
Dec13Extreme

Air quality in Formosa 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 Formosa is worst in September — around 23 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (May, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodSep 1222 µg/m³May 198 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun9Good
Jul12Good
Aug21Moderate
Sep23Moderate
Oct15Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Formosa?

Formosa sits at 26.2°S, 58.2°W, 67 m above sea level, in Argentina. The nearest listed city is Pilar, 76 km away.

Topography around Formosa

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

Within 3 km, the terrain around Formosa has only modest variations in elevation — a maximum elevation change of 17 m around an average of 58 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, only modest variations in elevation — a maximum elevation change of 182 m.

The land around Formosa is covered by artificial surfaces (50%) and trees (29%) within 3 km, trees (44%) and grassland (39%) within 16 km, and grassland (49%) and trees (36%) within 80 km.

3 km
17 m
16 km
23 m
80 km
182 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Pilar 76 km · San Antonio 106 km · Pirané 106 km · Villa Elisa 108 km · Nemby 109 km · Lambaré 109 km · Itá 111 km · Asuncion 113 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 Formosa (-26.1849°, -58.1731°, 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).