Tunuyán weather in January

In January, Tunuyán sees average daytime highs of 28°C and overnight lows near 15°C, with 68 mm of rain across 10.2 wet days and about 14 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 61% of the time in January, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of January to 13 h 42 min by month's end. Set against the rest of the year, January is Tunuyán's 5th-clearest and 4th-windiest month. For the whole year in context, see Tunuyán's year-round climate.

Daytime high
28°
1st warmest
Overnight low
15°
12th coldest
Rainfall
68 mm
10.2 wet days
Daylight
14 hours
6:45 AM – 8:45 PM
Cloud cover
37%
5th clearest
Wind
7 km/h
4th windiest
Solar energy
7.9 kWh/m²
Travel score
6.6
out of 10

Tunuyán is city in Mendoza, Argentina.

Founded
1880

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 28°C through the month.

A typical January day in Tunuyán reaches about 28°C in the afternoon and slips back to 15°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°C. Set against its neighbours, January runs about 1°C warmer than December and about 2°C warmer than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12815
22815
32815
42815
52815
62815
72815
82815
92815
102815
112815
122815
132815
142815
152815
162815
172815
182815
192815
202815
212815
222815
232815
242815
252815
262815
272815
282815
292815
302715
312715

How January really feels in Tunuyán

Once humidity and wind are folded in, January 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

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

Tunuyán weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan28° / 15°6810.20146.6
Feb26° / 14°6810013.26.8
Mar24° / 12°8511.7012.36.9
Apr19° / 80110.111.26.3
May15° / 6710.50.510.34.5
Jun12° / 547.91.49.83.3
Jul11° / -0°497.62.3103.1
Aug14° / 567.81.910.84.4
Sep17° / 629.10.911.85.8
Oct21° / 8310.40.112.86.9
Nov24° / 10°7910.8013.77.2
Dec27° / 13°759.9014.26.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 24% of January, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38614
48614
58614
68515
78515
88515
98515
108515
118515
128515
138416
148416
158416
168416
178515
188614
198614
208614
218614
228614
238614
248614
258614
268614
278614
288614
298515
308416
318416

Chance of precipitation in January

Any precipitation

Tunuyán gets around 68 mm of rain over 10.2 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 33% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
334
434
534
634
734
834
934
1034
1133
1233
1333
1433
1533
1632
1732
1832
1932
2032
2132
2232
2332
2432
2532
2632
2733
2833
2933
3034
3134

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
178193
277203
377203
476213
576213
676213
775223
875223
974224
1074224
1174224
1274224
1374224
1474224
1573234
1673234
1772244
1872244
1972244
2071254
2172253
2272253
2372253
2472253
2572253
2672253
2772253
2872253
2972253
3072253
3173243

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
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 14 h 12 min at the start of January to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over January. Sunrise moves from 6:33 AM to 6:59 AM, and sunset from 8:45 PM to 8:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.26:338:45
214.26:348:45
314.26:358:45
414.26:368:46
514.26:368:46
614.16:378:46
714.16:388:46
814.16:398:46
914.16:398:46
1014.16:408:46
1114.16:418:46
1214.16:428:46
1314.16:438:46
1414.06:448:46
1514.06:448:46
1614.06:458:45
1714.06:468:45
1814.06:478:45
1913.96:488:45
2013.96:498:44
2113.96:508:44
2213.96:518:44
2313.96:528:43
2413.86:538:43
2513.86:548:43
2613.86:558:42
2713.86:558:42
2813.76:568:41
2913.76:578:41
3013.76:588:40
3113.76:598:40

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.9 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 8.35 kWh/m² in December across the year — January's 7.9 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.2Intense
28.2Intense
38.2Intense
48.2Intense
58.1Intense
68.1Intense
78.1Intense
88.1Intense
98.1Intense
108.0Intense
118.0Intense
128.0Intense
138.0Intense
147.9Intense
157.9Intense
167.9Intense
177.9Intense
187.8Intense
197.8Intense
207.8Intense
217.8Intense
227.8Intense
237.7Intense
247.7Intense
257.7Intense
267.7Intense
277.6Intense
287.6Intense
297.6Intense
307.5Intense
317.5Intense
Planning a trip in January

Is January a good time to visit Tunuyán?

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

6.6
Sightseeing
6th-best month of the year
7.2
Beach & pool
1st-best month of the year

January is a reasonable time to visit Tunuyán for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tunuyán in January

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

In January, Tunuyán sees daytime highs around 28°C and nights near 15°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Tunuyán 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 Tunuyán peaks around January 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighExtremeJan 17UV 15Jun 20UV 3
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar11Extreme
Apr6High
May5High
Jun3Moderate
Jul4Moderate
Aug6High
Sep6High
Oct10Extreme
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Tunuyán?

Tunuyán sits at 33.6°S, 69.0°W, 864 m above sea level, in Argentina. The nearest listed city is Tupungato, 27 km away.

Topography around Tunuyán

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

Within 3 km, the terrain around Tunuyán has only modest variations in elevation — a maximum elevation change of 92 m around an average of 885 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 203 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,950 m.

The land around Tunuyán is covered by grassland (29%), shrubs (23%) and cropland (20%) within 3 km, shrubs (44%) and cropland (28%) within 16 km, and shrubs (44%), grassland (25%) and bare terrain (21%) within 80 km.

3 km
92 m
16 km
203 m
80 km
5,950 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainsnow and icewater
January weather nearby: Tupungato 27 km · Perdriel 58 km · Rivadavia 67 km · Rodeo del Medio 72 km · San Martín 75 km · Mendoza 79 km · San Rafael 131 km · Peñalolén 141 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 Tunuyán (-33.5812°, -69.0154°, elevation 864 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).