Santa Rosa weather in January

In January, Santa Rosa sees average daytime highs of 30°C and overnight lows near 18°C, with 82 mm of rain across 9 wet days and about 14.2 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 65% of the time in January, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of January to 13 h 54 min by month's end. Set against the rest of the year, January is Santa Rosa's 1st-clearest and 5th-windiest month. For the whole year in context, see Santa Rosa's year-round climate.

Daytime high
30°
1st warmest
Overnight low
18°
12th coldest
Rainfall
82 mm
9 wet days
Daylight
14 h 12 min
6:19 AM – 8:34 PM
Cloud cover
34%
1st clearest
Wind
12 km/h
5th windiest
Solar energy
7.62 kWh/m²
Travel score
5.6
out of 10

Santa Rosa is capital of La Pampa Province, Argentina.

Density
69/km²
people per km²
Founded
1892

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 30°C through the month.

A typical January day in Santa Rosa reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13018
23018
33018
43018
53018
63018
73018
83018
93018
103018
113018
123018
133018
143018
153018
163018
173018
183018
193018
203018
213018
223018
233018
243018
253018
263018
273018
282918
292918
302918
312917

How January really feels in Santa Rosa

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.

Santa Rosa 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
Jan30° / 18°82914.25.6
Feb28° / 17°817.913.46.4
Mar26° / 15°86812.37.4
Apr22° / 11°676.311.17.4
May17° / 30510.16.2
Jun14° / 173.39.54.8
Jul14° / 193.79.84.6
Aug16° / 27410.66.1
Sep19° / 485.811.86.9
Oct22° / 11°839.612.96.9
Nov26° / 14°748.1147.4
Dec29° / 16°858.514.56.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 21%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37822
47822
57822
67822
77822
87921
97921
108020
118020
128020
138119
148119
158119
168119
178119
188119
198020
208020
218020
227921
237921
247921
257822
267822
277822
287723
297723
307723
317624

Chance of precipitation in January

Any precipitation

Santa Rosa gets around 82 mm of rain over 9 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
231
331
430
530
630
730
829
929
1029
1129
1228
1328
1428
1528
1628
1728
1828
1928
2028
2128
2228
2328
2429
2529
2629
2729
2829
2929
3029
3129

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1402622111
2392622111
3392622121
4392622121
5402622121
6402522121
7402522120
8402522120
9412522120
10412522120
11412522120
12412522120
13402522121
14402522121
15392522121
16392523131
17382523131
18372524131
19362524131
20362525132
21352526132
22342426132
23342427132
24332427132
25332428132
26332428132
27332428142
28332428142
29332428142
30342427142
31342427142

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 12 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
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 30 min at the start of January to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over January. Sunrise moves from 6:06 AM to 6:34 AM, and sunset from 8:34 PM to 8:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.56:068:34
214.56:078:34
314.46:088:35
414.46:098:35
514.46:098:35
614.46:108:35
714.46:118:35
814.46:128:35
914.46:138:35
1014.46:148:35
1114.36:148:35
1214.36:158:35
1314.36:168:34
1414.36:178:34
1514.36:188:34
1614.26:198:34
1714.26:208:34
1814.26:218:33
1914.26:228:33
2014.26:238:33
2114.16:248:32
2214.16:258:32
2314.16:268:31
2414.16:278:31
2514.06:288:30
2614.06:298:30
2714.06:308:29
2814.06:318:29
2913.96:328:28
3013.96:338:27
3113.96:348:27

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.62 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 7.87 kWh/m² in December across the year — January's 7.62 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.8Intense
57.8Intense
67.8Intense
77.8Intense
87.8Intense
97.8Intense
107.8Intense
117.8Intense
127.8Intense
137.8Intense
147.8Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.6Intense
207.6Intense
217.6Intense
227.5Intense
237.5Intense
247.5Intense
257.4Intense
267.4Intense
277.3Intense
287.3Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in January

Is January a good time to visit Santa Rosa?

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

5.6
Sightseeing
10th-best month of the year
7.5
Beach & pool
2nd-best month of the year

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

What to pack for Santa Rosa in January

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

In January, Santa Rosa sees daytime highs around 30°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Santa Rosa in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Rosa peaks around January 1 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 1UV 13Jun 21UV 2
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr6High
May3Moderate
Jun2Moderate
Jul2Moderate
Aug4Moderate
Sep5High
Oct8Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is Santa Rosa?

Santa Rosa sits at 36.6°S, 64.3°W, 163 m above sea level, in Argentina. The nearest listed city is Toay, 10 km away.

General VillegasCoronel SuárezPehuajó

Topography around Santa Rosa

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

Within 3 km, the terrain around Santa Rosa has only modest variations in elevation — a maximum elevation change of 34 m around an average of 180 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 118 m; within 80 km, significant variations in elevation — a maximum elevation change of 274 m.

The land around Santa Rosa is covered by artificial surfaces (59%) within 3 km, cropland (65%) within 16 km, and cropland (59%) within 80 km.

3 km
34 m
16 km
118 m
80 km
274 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Toay 10 km · General Acha 89 km · General Pico 117 km · Trenque Lauquen 157 km · Pigüé 200 km · General Villegas 210 km · Coronel Suárez 229 km · Pehuajó 232 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 Santa Rosa (-36.6162°, -64.2899°, elevation 163 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).