Rosario de Lerma weather in January

In January, Rosario de Lerma sees average daytime highs of 24°C and overnight lows near 16°C, with 216 mm of rain across 24.3 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 9% of the time in January, and the air most often feels humid.

Daylight stretches from about 13 h 30 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 Lerma's 10th-clearest and 8th-windiest month. For the whole year in context, see Rosario de Lerma's year-round climate.

Daytime high
24°
1st warmest
Overnight low
16°
12th coldest
Rainfall
216 mm
24.3 wet days
Daylight
13 h 24 min
6:50 AM – 8:13 PM
Cloud cover
74%
10th clearest
Wind
4 km/h
8th windiest
Solar energy
5.79 kWh/m²
Travel score
4.6
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical January day in Rosario de Lerma reaches about 24°C in the afternoon and slips back to 16°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, January runs on par with December and about 1°C warmer than February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12516
22516
32516
42516
52516
62516
72416
82416
92416
102416
112416
122416
132416
142416
152416
162416
172416
182416
192416
202416
212416
222416
232416
242416
252416
262416
272416
282416
292416
302416
312416

Rosario de Lerma weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 16°21624.3013.44.6
Feb23° / 16°19522.7012.94.4
Mar22° / 15°20223.8012.24.4
Apr20° / 12°12919.50.111.44.7
May17° / 7413.60.210.85.1
Jun16° / 368.20.410.55.5
Jul16° / 286.70.710.65.8
Aug18° / 275.80.311.17.0
Sep20° / 397.60.111.87.0
Oct22° / 12°91140.112.66.2
Nov23° / 14°12616.5013.25.7
Dec24° / 15°18121.2013.55.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 18% of January, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42872
52872
62872
72872
82872
92872
102773
112872
122872
132773
142773
152872
162872
172872
182773
192773
202773
212773
222773
232773
242872
252773
262773
272674
282773
292674
302674
312575

Chance of precipitation in January

Any precipitation

Rosario de Lerma gets around 216 mm of rain over 24.3 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 78% and peaks near 80% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
172
273
373
474
575
676
776
877
978
1078
1178
1279
1379
1479
1579
1680
1780
1880
1980
2080
2180
2279
2379
2479
2579
2679
2779
2879
2979
3079
3179

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 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1738523
2738523
3638533
4638533
5638533
6637543
7637543
8737533
9737533
10737533
11737533
12738523
13738523
14738523
15739513
16739513
17739513
18739513
19739513
20639523
21639523
22639523
23639523
24638533
25638533
26637543
27636553
28636553
29635563
30635563
31734563

Wind in January

Winds average 4 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 30 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 18 minutes over January. Sunrise moves from 6:40 AM to 7:01 AM, and sunset from 8:11 PM to 8:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:408:11
213.56:408:12
313.56:418:12
413.56:418:12
513.56:428:12
613.56:438:13
713.56:438:13
813.56:448:13
913.56:458:13
1013.56:458:13
1113.56:468:13
1213.46:478:13
1313.46:488:13
1413.46:488:13
1513.46:498:13
1613.46:508:13
1713.46:508:13
1813.46:518:13
1913.46:528:13
2013.36:538:13
2113.36:538:13
2213.36:548:13
2313.36:558:13
2413.36:568:13
2513.36:568:12
2613.36:578:12
2713.26:588:12
2813.26:588:12
2913.26:598:11
3013.27:008:11
3113.27:018:11

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.79 kWh/m².

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 6.02 kWh/m² in November across the year — January's 5.79 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Bright
86.0Bright
95.9Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in January

Hazard calendar for Rosario de Lerma

In seasonPeak

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

Rosario de Lerma's rainy season runs November–April, when most of the year's rain falls.

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

Is January a good time to visit Rosario de Lerma?

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

4.6
Sightseeing
10th-best month of the year
4.0
Beach & pool
4th-best month of the year

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

What to pack for Rosario de Lerma in January

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

In January, Rosario de Lerma sees daytime highs around 24°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 24 days see rain.

rain gearlight clothessun protection

UV index in Rosario de Lerma in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 16 (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 Lerma peaks around January 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 16UV 16Jul 10UV 6
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar14Extreme
Apr9Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep10Extreme
Oct13Extreme
Nov15Extreme
Dec16Extreme
Location & terrain

Where is Rosario de Lerma?

Rosario de Lerma sits at 25.0°S, 65.6°W, 1,421 m above sea level, in Argentina. The nearest listed city is San José de los Cerrillos, 14 km away.

Topography around Rosario de Lerma

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

Within 3 km, the terrain around Rosario de Lerma has only modest variations in elevation — a maximum elevation change of 103 m around an average of 1,318 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,912 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,593 m.

The land around Rosario de Lerma is covered by cropland (66%) within 3 km, cropland (45%) and trees (38%) within 16 km, and trees (37%), grassland (23%) and bare terrain (23%) within 80 km.

3 km
103 m
16 km
1,912 m
80 km
5,593 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
January weather nearby: San José de los Cerrillos 14 km · Salta 26 km · San Lorenzo 29 km · General Güemes 64 km · San José de Metán 83 km · Palpalá 89 km · San Salvador de Jujuy 93 km · Rosario de la Frontera 109 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 Lerma (-24.9858°, -65.5784°, elevation 1,421 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).