Rionegro weather in September

In September, Rionegro sees average daytime highs of 24°C and overnight lows near 14°C, with 176 mm of rain across 21.4 wet days and about 12 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Rionegro's 7th-clearest and 3rd-windiest month. For the whole year in context, see Rionegro's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
14°
6th coldest
Rainfall
176 mm
21.4 wet days
Daylight
12 hours
5:55 AM – 5:57 PM
Cloud cover
88%
7th clearest
Wind
4 km/h
3rd windiest
Solar energy
5.73 kWh/m²
Travel score
4.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Rionegro reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52414
62414
72414
82414
92414
102414
112414
122414
132414
142414
152414
162414
172414
182414
192414
202414
212414
222414
232414
242414
252414
262414
272414
282414
292414
302414

Rionegro weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 14°14121.311.74.9
Feb23° / 14°15722.311.84.4
Mar23° / 14°26827.1124.0
Apr23° / 15°31926.112.13.9
May24° / 15°27224.912.34.3
Jun24° / 14°10517.312.45.3
Jul24° / 14°6912.312.36.1
Aug25° / 14°8913.912.25.8
Sep24° / 14°17621.4124.7
Oct23° / 14°33227.711.93.8
Nov23° / 14°36928.511.73.6
Dec23° / 14°22023.811.64.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2892
3892
4892
5892
6892
7892
8892
9793
10793
11793
12793
13694
14694
15694
16694
17694
18793
19694
20694
21694
22694
23694
24694
25694
26496
27496
28496
29496
30496

Chance of precipitation in September

Any precipitation

Rionegro gets around 176 mm of rain over 21.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 71% and peaks near 81% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
161
261
362
462
562
663
764
864
965
1066
1167
1268
1369
1470
1571
1672
1773
1874
1975
2076
2176
2277
2378
2479
2579
2679
2780
2880
2981
3081

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
117758
216768
316768
415778
514779
613789
7127810
8117811
9107911
1097912
1188012
1287913
1377914
1468014
1558015
1658015
1748115
1848016
1938116
2038017
2128117
2228018
2318019
2418019
2517920
2617821
2707723
2807624
2907525
3007426

Wind in September

Winds average 4 km/h in September.

Across September, 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.

0246810151015202530
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

Sunrise & sunset in September

DaylightNight

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

Days shrink by about 6 minutes over September. Sunrise moves from 5:58 AM to 5:52 AM, and sunset from 6:05 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:586:05
212.15:576:04
312.15:576:04
412.15:576:03
512.15:576:03
612.15:576:02
712.15:576:02
812.15:566:01
912.15:566:01
1012.15:566:00
1112.15:566:00
1212.15:565:59
1312.15:555:58
1412.05:555:58
1512.05:555:57
1612.05:555:57
1712.05:555:56
1812.05:545:56
1912.05:545:55
2012.05:545:55
2112.05:545:54
2212.05:545:54
2312.05:535:53
2412.05:535:52
2512.05:535:52
2612.05:535:51
2712.05:535:51
2812.05:535:50
2912.05:525:50
3012.05:525:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.73 kWh/m².

For context, solar energy here swings from a low near 4.35 kWh/m² to a high of 6.24 kWh/m² in August across the year — September's 5.73 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Bright
86.0Bright
95.9Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.8Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Is September a good time to visit Rionegro?

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

4.7
Sightseeing
5th-best month of the year
4.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Rionegro for sightseeing.

What to pack for Rionegro in September

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

In September, Rionegro sees daytime highs around 24°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

UV index in Rionegro in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Rionegro peaks around February 21 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 21UV 16Dec 13UV 12
UV index (midday)Level
Jan13Extreme
Feb16Extreme
Mar16Extreme
Apr12Extreme
May14Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep14Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme

Air quality in Rionegro in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Rionegro is worst in March — around 33 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1631 µg/m³Oct 2217 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb25Moderate
Mar33Moderate
Apr24Moderate
May20Moderate
Jun18Moderate
Jul18Moderate
Aug21Moderate
Sep18Moderate
Oct17Moderate
Nov17Moderate
Dec18Moderate
Location & terrain

Where is Rionegro?

Rionegro sits at 6.2°N, 75.4°W, 2,090 m above sea level, in Colombia. The nearest listed city is Marinilla, 5.0 km away.

Topography around Rionegro

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

Within 3 km, the terrain around Rionegro has only modest variations in elevation — a maximum elevation change of 91 m around an average of 2,108 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 903 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,217 m.

The land around Rionegro is covered by grassland (50%), trees (26%) and artificial surfaces (22%) within 3 km, grassland (60%) and trees (36%) within 16 km, and trees (63%) and grassland (35%) within 80 km.

3 km
91 m
16 km
903 m
80 km
3,217 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Marinilla 5.0 km · Carmen de Viboral 9.0 km · Santuario 12 km · San Vicente 15 km · La Ceja 15 km · Retiro 18 km · La Unión 20 km · Medellin 24 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 Rionegro (6.1551°, -75.3737°, elevation 2,090 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).