Santa Rosa de Osos weather in May

In May, Santa Rosa de Osos sees average daytime highs of 22°C and overnight lows near 13°C, with 414 mm of rain across 27 wet days and about 12.3 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 0% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 12 h 12 min at the start of May to 12 h 24 min by month's end. Set against the rest of the year, May is Santa Rosa de Osos's 12th-clearest and 8th-windiest month. For the whole year in context, see Santa Rosa de Osos's year-round climate.

Daytime high
22°
5th warmest
Overnight low
13°
12th coldest
Rainfall
414 mm
27 wet days
Daylight
12 h 18 min
5:49 AM – 6:07 PM
Cloud cover
95%
12th clearest
Wind
3 km/h
8th windiest
Solar energy
4.74 kWh/m²
Travel score
3.8
out of 10
Founded
1636

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical May day in Santa Rosa de Osos reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°C. Set against its neighbours, May runs on par with April and on par with June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102213
112213
122213
132213
142213
152213
162213
172213
182213
192213
202213
212213
222213
232213
242213
252213
262213
272213
282213
292213
302213
312213

Santa Rosa de Osos weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 1% of May, with mostly cloudy or overcast conditions the remaining 99%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1199
2199
3199
4199
5199
6199
7199
8199
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199
31298

Chance of precipitation in May

Any precipitation

Santa Rosa de Osos gets around 414 mm of rain over 27 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 86% and peaks near 90% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
289
389
488
588
688
787
887
987
1087
1187
1287
1386
1486
1586
1686
1786
1886
1986
2086
2186
2286
2386
2486
2586
2685
2785
2884
2983
3082
3181

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
138314
228414
328414
428513
528513
628612
728612
828711
928711
1028711
1128810
1228810
133889
143889
153889
163898
173898
183898
193907
203907
213907
223907
233916
243916
254906
264915
274915
284915
295914
305914
316904

Wind in May

Winds average 3 km/h in May.

Across May, 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 May

DaylightNight

Daylight runs from about 12 h 12 min at the start of May to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:52 AM to 5:49 AM, and sunset from 6:06 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:526:06
212.25:526:06
312.25:526:06
412.25:516:06
512.35:516:06
612.35:516:06
712.35:516:06
812.35:506:06
912.35:506:06
1012.35:506:06
1112.35:506:07
1212.35:506:07
1312.35:496:07
1412.35:496:07
1512.35:496:07
1612.35:496:07
1712.35:496:07
1812.35:496:07
1912.35:496:08
2012.35:496:08
2112.35:496:08
2212.35:496:08
2312.35:496:08
2412.35:486:08
2512.35:486:09
2612.35:486:09
2712.35:486:09
2812.35:486:09
2912.35:496:09
3012.45:496:10
3112.45:496:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.74 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 — May's 4.74 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
315.0Bright
Planning a trip in May

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

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

3.8
Sightseeing
8th-best month of the year
2.7
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Santa Rosa de Osos.

What to pack for Santa Rosa de Osos in May

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

In May, Santa Rosa de Osos sees daytime highs around 22°C and nights near 13°C. Pack rain gear. Worth having: sun protection. About 27 days see rain.

rain gearsun protection

UV index in Santa Rosa de Osos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 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 May

GoodModeratePoorUnhealthyVery unhealthy

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