Climate averages 1991–2020
Rionegro weather
in September.
A warm, wet month: the 3rd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Rionegro: daytime highs average 22.3°C and nights cool to about 13.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 176 mm of rain on roughly 21 days, which makes September a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average September day.
The nearest other city in this atlas is Medellín (24 km away). In September its highs average 24.8°C, 2.5°C warmer than Rionegro, with 247 mm of rain.
Among the 46 cities listed in Colombia, Rionegro ranks 38th of 46 for the warmest September highs and 20th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Rionegro is 4.2°C cooler than that mean.
From September to October, average highs fall by 1.1°C to 21.1°C, and monthly rainfall rises from 176 mm to 332 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rionegro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.1°C12.9°C | 12.9°C | 141 | 21.3 | 11.812 h |
| February | 21.4°C13.0°C | 13.0°C | 159 | 22.5 | 11.912 h |
| March | 21.7°C13.2°C | 13.2°C | 267 | 27.1 | 12.112 h |
| April | 21.5°C13.5°C | 13.5°C | 319 | 26.0 | 12.312 h |
| May | 21.6°C13.6°C | 13.6°C | 272 | 24.9 | 12.412 h |
| June | 21.9°C13.1°C | 13.1°C | 105 | 17.3 | 12.512 h |
| July | 22.4°C12.7°C | 12.7°C | 69 | 12.2 | 12.412 h |
| August | 23.1°C12.9°C | 12.9°C | 89 | 13.9 | 12.312 h |
| September, selected | 22.3°C13.0°C | 13.0°C | 176 | 21.4 | 12.212 h |
| October | 21.1°C13.1°C | 13.1°C | 332 | 27.7 | 12.012 h |
| November | 20.5°C13.2°C | 13.2°C | 369 | 28.5 | 11.812 h |
| December | 20.8°C13.1°C | 13.1°C | 220 | 23.8 | 11.812 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Medellín in SeptemberColombia · 24 kmHigh 24.8°C · Low 14.8°C · 247 mm rain
- Bello in SeptemberColombia · 29 kmHigh 25.3°C · Low 15.2°C · 247 mm rain
- Caldas in SeptemberColombia · 30 kmHigh 23.2°C · Low 13.0°C · 253 mm rain
- La Dorada in SeptemberColombia · 111 kmHigh 33.2°C · Low 22.9°C · 110 mm rain
- Quibdó in SeptemberColombia · 151 kmHigh 27.8°C · Low 22.6°C · 754 mm rain
- Ibagué in SeptemberColombia · 192 kmHigh 26.9°C · Low 19.2°C · 217 mm rain
- Barrancabermeja in SeptemberColombia · 196 kmHigh 29.9°C · Low 23.3°C · 393 mm rain
- Zipaquirá in SeptemberColombia · 197 kmHigh 19.8°C · Low 9.9°C · 77 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rionegro) is explained once on the Rionegro year overview and on the Sources, method and limits page.