Santa Rosa de Osos weather in January

In January, Santa Rosa de Osos sees average daytime highs of 21°C and overnight lows near 12°C, with 108 mm of rain across 19.4 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 8% of the time in January, and the air most often feels comfortable.

Daylight stretches from about 11 h 36 min at the start of January to 11 h 42 min by month's end. Set against the rest of the year, January is Santa Rosa de Osos's 1st-clearest and 5th-windiest month. For the whole year in context, see Santa Rosa de Osos's year-round climate.

Daytime high
21°
8th warmest
Overnight low
12°
1st coldest
Rainfall
108 mm
19.4 wet days
Daylight
11 h 42 min
6:22 AM – 6:01 PM
Cloud cover
74%
1st clearest
Wind
3 km/h
5th windiest
Solar energy
5.05 kWh/m²
Travel score
5.0
out of 10
Founded
1636

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 21°C through the month.

A typical January day in Santa Rosa de Osos reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 23°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12112
22112
32112
42112
52112
62112
72112
82112
92112
102112
112112
122112
132112
142112
152112
162112
172112
182112
192112
202112
212112
222112
232112
242112
252112
262112
272112
282112
292112
302112
312112

Santa Rosa de Osos weather by month

How January compares with the rest of the year at a glance. January is the 8th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 12°10819.411.75.0
Feb21° / 12°16821.611.84.3
Mar21° / 13°31327.9123.7
Apr22° / 13°42627.712.13.5
May22° / 13°4142712.33.8
Jun22° / 13°20720.412.44.5
Jul22° / 13°16218.112.35.1
Aug23° / 13°18717.412.25.1
Sep22° / 13°30423.1124.2
Oct21° / 13°38428.211.93.6
Nov21° / 13°33127.511.73.5
Dec21° / 12°17422.411.64.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32575
42476
52476
62476
72476
82278
92278
102179
112179
122179
131981
141981
151981
161981
171981
182080
191981
201981
212179
222179
232278
242377
252476
262476
272575
282575
292575
302575
312575

Chance of precipitation in January

Any precipitation

Santa Rosa de Osos gets around 108 mm of rain over 19.4 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 63% and peaks near 66% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
159
259
359
460
560
661
762
863
964
1065
1165
1266
1366
1466
1566
1665
1765
1865
1964
2064
2163
2263
2362
2462
2562
2662
2763
2863
2963
3064
3165

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the comfortable band about 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
14060
24060
34060
44060
54060
64060
74060
83961
93961
103961
113961
123961
133961
143961
154060
164060
174060
184159
194159
204258
214258
224258
234357
244357
254357
264258
274258
284258
294159
304159
314060

Wind in January

Winds average 3 km/h in January.

Across January, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 36 min at the start of January to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:16 AM to 6:24 AM, and sunset from 5:54 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:165:54
211.66:175:54
311.66:175:55
411.66:185:55
511.66:185:56
611.66:185:56
711.66:195:57
811.66:195:57
911.66:195:57
1011.66:205:58
1111.66:205:58
1211.66:205:59
1311.66:215:59
1411.66:216:00
1511.66:216:00
1611.76:226:01
1711.76:226:01
1811.76:226:02
1911.76:226:02
2011.76:226:02
2111.76:236:03
2211.76:236:03
2311.76:236:04
2411.76:236:04
2511.76:236:04
2611.76:236:05
2711.76:246:05
2811.76:246:05
2911.76:246:06
3011.76:246:06
3111.76:246:06

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.05 kWh/m².

For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 5.77 kWh/m² in August across the year — January's 5.05 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in January

Is January a good time to visit Santa Rosa de Osos?

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

5.0
Sightseeing
3rd-best month of the year
3.1
Beach & pool
4th-best month of the year

January is a reasonable time to visit Santa Rosa de Osos for sightseeing.

What to pack for Santa Rosa de Osos in January

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

In January, Santa Rosa de Osos sees daytime highs around 21°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 19 days see rain.

rain gearsun protection

UV index in Santa Rosa de Osos in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (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 de Osos peaks around February 22 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 16Dec 12UV 12
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar16Extreme
Apr13Extreme
May15Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep14Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Santa Rosa de Osos 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 Santa Rosa de Osos is worst in March — around 25 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1525 µg/m³Oct 2112 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb20Moderate
Mar25Moderate
Apr17Moderate
May14Moderate
Jun13Moderate
Jul13Moderate
Aug13Moderate
Sep12Moderate
Oct12Good
Nov12Good
Dec13Moderate
Location & terrain

Where is Santa Rosa de Osos?

Santa Rosa de Osos sits at 6.6°N, 75.5°W, 2,586 m above sea level, in Colombia. The nearest listed city is Barbosa, 27 km away.

Topography around Santa Rosa de Osos

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

Within 3 km, the terrain around Santa Rosa de Osos has only modest variations in elevation — a maximum elevation change of 172 m around an average of 2,540 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,113 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,807 m.

The land around Santa Rosa de Osos is covered by grassland (77%) within 3 km, grassland (63%) and trees (36%) within 16 km, and trees (63%) and grassland (35%) within 80 km.

3 km
172 m
16 km
1,113 m
80 km
3,807 m
treesgrasslandartificial surfaceswater
January weather nearby: Barbosa 27 km · Copacabana 34 km · Yarumal 35 km · Bello 36 km · Santa Fe de Antioquia 42 km · San Vicente 43 km · Medellin 46 km · Itagüí 54 km

Colombia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 / 240 V · 60 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$8,562
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
74%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
15.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 480
Religion
Roman Catholic 64%Protestant 17%none 14%atheist 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 de Osos (6.6474°, -75.4603°, elevation 2,586 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).