Santa Rosa de Osos weather in August

In August, Santa Rosa de Osos sees average daytime highs of 23°C and overnight lows near 13°C, with 187 mm of rain across 17.4 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 1% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 12 h 18 min at the start of August to 12 h 06 min by month's end. Set against the rest of the year, August is Santa Rosa de Osos's 5th-clearest and 1st-windiest month. For the whole year in context, see Santa Rosa de Osos's year-round climate.

Daytime high
23°
1st warmest
Overnight low
13°
7th coldest
Rainfall
187 mm
17.4 wet days
Daylight
12 h 12 min
5:59 AM – 6:13 PM
Cloud cover
90%
5th clearest
Wind
4 km/h
1st windiest
Solar energy
5.77 kWh/m²
Travel score
5.1
out of 10
Founded
1636

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical August day in Santa Rosa de Osos reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, August runs on par with July and on par with September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62313
72313
82313
92313
102313
112313
122313
132313
142313
152313
162313
172313
182313
192313
202313
212313
222313
232313
242313
252313
262313
272313
282313
292213
302213
312213

Santa Rosa de Osos weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 8th-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 4% of August, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3793
4694
5694
6694
7694
8694
9694
10694
11694
12694
13694
14694
15595
16595
17595
18595
19595
20595
21496
22496
23496
24496
25496
26496
27397
28397
29397
30397
31397

Chance of precipitation in August

Any precipitation

Santa Rosa de Osos gets around 187 mm of rain over 17.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
152
252
352
452
552
652
752
852
953
1054
1154
1255
1356
1456
1557
1658
1759
1859
1960
2061
2161
2262
2362
2462
2562
2663
2763
2864
2964
3065
3166

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
156440
256440
355441
455441
554451
654451
753461
853461
952471
1051481
1151481
1251481
1350491
1450491
1549501
1649501
1748511
1847521
1947521
2046531
2146531
2246531
2345541
2445541
2545541
2645541
2745550
2844560
2944560
3043570
3142580

Wind in August

Winds average 4 km/h in August, the windiest month of the year.

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

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
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 August

DaylightNight

Daylight runs from about 12 h 18 min at the start of August to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over August. Sunrise moves from 5:59 AM to 5:58 AM, and sunset from 6:17 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:596:17
212.35:596:17
312.35:596:16
412.35:596:16
512.35:596:16
612.35:596:16
712.35:596:15
812.35:596:15
912.35:596:15
1012.35:596:15
1112.25:596:14
1212.25:596:14
1312.25:596:14
1412.25:596:13
1512.25:596:13
1612.25:596:13
1712.25:596:12
1812.25:596:12
1912.25:596:11
2012.25:596:11
2112.25:596:11
2212.25:596:10
2312.25:596:10
2412.25:596:09
2512.25:596:09
2612.25:596:08
2712.25:586:08
2812.25:586:07
2912.15:586:07
3012.15:586:06
3112.15:586:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.77 kWh/m² — the sunniest month for solar.

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 — August's 5.77 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.6Bright
Planning a trip in August

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

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

5.1
Sightseeing
1st-best month of the year
3.8
Beach & pool
1st-best month of the year

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

What to pack for Santa Rosa de Osos in August

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

In August, Santa Rosa de Osos sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 17 days see rain.

rain gearlight clothessun protection

UV index in Santa Rosa de Osos in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 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 August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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
August 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).