Rosario de la Frontera weather in January

In January, Rosario de la Frontera sees average daytime highs of 27°C and overnight lows near 18°C, with 244 mm of rain across 20.2 wet days and about 13.4 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels humid.

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 Rosario de la Frontera's 11th-clearest and 7th-windiest month. For the whole year in context, see Rosario de la Frontera's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
18°
12th coldest
Rainfall
244 mm
20.2 wet days
Daylight
13 h 24 min
6:46 AM – 8:13 PM
Cloud cover
68%
11th clearest
Wind
7 km/h
7th windiest
Solar energy
5.76 kWh/m²
Travel score
4.9
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Rosario de la Frontera reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, January runs on par with December and about 1°C warmer than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12818
22818
32818
42818
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292718
302718
312718

Rosario de la Frontera weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°24420.213.44.9
Feb26° / 17°19918.112.95.1
Mar24° / 16°16918.312.25.5
Apr22° / 13°9113.411.46.1
May20° / 10°42910.86.4
Jun18° / 185.310.46.9
Jul19° / 13410.67.4
Aug22° / 153.511.18.1
Sep24° / 10°255.111.88.0
Oct26° / 14°7811.712.66.6
Nov26° / 15°12214.813.35.8
Dec27° / 17°19618.513.65.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 25% of January, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
43961
53961
63862
73862
83961
93961
103961
113961
123961
133961
143961
153961
163961
173961
183961
193862
203862
213862
223763
233763
243862
253862
263862
273862
283763
293763
303763
313763

Chance of precipitation in January

Any precipitation

Rosario de la Frontera gets around 244 mm of rain over 20.2 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 65% and peaks near 66% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
165
265
366
466
566
666
766
866
966
1066
1166
1266
1366
1466
1566
1666
1766
1866
1965
2065
2165
2265
2364
2464
2564
2664
2765
2865
2965
3066
3166

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
151739400
241738410
341738410
431737420
531737420
631837420
731837420
831837420
931837410
1031838410
1131739400
1241740390
1341741380
1441642370
1541644360
1641545351
1741547341
1841448331
1941449331
2041450321
2131450321
2231351321
2331351321
2431351321
2531252321
2631251331
2731250341
2831249351
2931248351
3031347361
3131346371

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 6:35 AM to 6:57 AM, and sunset from 8:11 PM to 8:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:358:11
213.66:368:11
313.66:378:11
413.66:378:11
513.66:388:12
613.66:398:12
713.56:398:12
813.56:408:12
913.56:418:12
1013.56:418:12
1113.56:428:13
1213.56:438:13
1313.56:448:13
1413.56:448:13
1513.56:458:13
1613.46:468:13
1713.46:468:13
1813.46:478:13
1913.46:488:12
2013.46:498:12
2113.46:498:12
2213.46:508:12
2313.36:518:12
2413.36:528:12
2513.36:528:11
2613.36:538:11
2713.36:548:11
2813.36:558:11
2913.26:558:10
3013.26:568:10
3113.26:578:10

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.76 kWh/m².

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 5.87 kWh/m² in December across the year — January's 5.76 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Bright
66.0Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for Rosario de la Frontera

In seasonPeak

In January, Rosario de la Frontera sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Rosario de la Frontera's monsoon runs November–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Rosario de la Frontera?

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

4.9
Sightseeing
12th-best month of the year
5.0
Beach & pool
6th-best month of the year

January is a reasonable time to visit Rosario de la Frontera for sightseeing.

What to pack for Rosario de la Frontera in January

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

In January, Rosario de la Frontera sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.

rain gearlight clothessun protection

UV index in Rosario de la Frontera 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 Rosario de la Frontera peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 18UV 15Jul 10UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug7High
Sep9Very high
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Rosario de la Frontera?

Rosario de la Frontera sits at 25.8°S, 65.0°W, 768 m above sea level, in Argentina. The nearest listed city is San José de Metán, 34 km away.

Topography around Rosario de la Frontera

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosario de la Frontera.

Within 3 km, the terrain around Rosario de la Frontera has only modest variations in elevation — a maximum elevation change of 88 m around an average of 791 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 975 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,471 m.

The land around Rosario de la Frontera is covered by cropland (50%) within 3 km, trees (53%) and cropland (38%) within 16 km, and trees (52%) within 80 km.

3 km
88 m
16 km
975 m
80 km
3,471 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: San José de Metán 34 km · Cafayate 105 km · Tafí Viejo 108 km · Rosario de Lerma 109 km · San José de los Cerrillos 113 km · Joaquín V. González 114 km · Alderetes 115 km · San Miguel de Tucuman 116 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 Rosario de la Frontera (-25.7986°, -64.9739°, elevation 768 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).