Climate averages 1991–2020
Bello weather
in September.
A warm, very wet month: the joint 3rd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Bello: daytime highs average 25.3°C and nights cool to about 15.2°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 247 mm of rain on roughly 27 days, which makes September a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Medellín (10 km away). In September its highs average 24.8°C, about as warm as Bello, with 247 mm of rain.
Among the 46 cities listed in Colombia, Bello ranks 30th of 46 for the warmest September highs and joint 35th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Bello is 1.2°C cooler than that mean.
From September to October, average highs fall by 1.2°C to 24.0°C, and monthly rainfall rises from 247 mm to 307 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
Bello climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.7°C15.1°C | 15.1°C | 134 | 21.3 | 11.812 h |
| February | 25.2°C15.4°C | 15.4°C | 169 | 22.9 | 11.912 h |
| March | 25.3°C15.6°C | 15.6°C | 268 | 28.1 | 12.112 h |
| April | 24.7°C16.0°C | 16.0°C | 335 | 28.6 | 12.312 h |
| May | 24.5°C16.0°C | 16.0°C | 337 | 29.5 | 12.412 h |
| June | 25.0°C15.3°C | 15.3°C | 208 | 26.7 | 12.512 h |
| July | 25.5°C14.7°C | 14.7°C | 172 | 25.6 | 12.512 h |
| August | 26.0°C14.9°C | 14.9°C | 180 | 25.0 | 12.312 h |
| September, selected | 25.3°C15.2°C | 15.2°C | 247 | 27.2 | 12.212 h |
| October | 24.0°C15.6°C | 15.6°C | 307 | 29.2 | 12.012 h |
| November | 23.4°C15.7°C | 15.7°C | 294 | 28.6 | 11.812 h |
| December | 24.1°C15.4°C | 15.4°C | 193 | 23.9 | 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 · 10 kmHigh 24.8°C · Low 14.8°C · 247 mm rain
- Caldas in SeptemberColombia · 29 kmHigh 23.2°C · Low 13.0°C · 253 mm rain
- Rionegro in SeptemberColombia · 29 kmHigh 22.3°C · Low 13.0°C · 176 mm rain
- La Dorada in SeptemberColombia · 140 kmHigh 33.2°C · Low 22.9°C · 110 mm rain
- Quibdó in SeptemberColombia · 141 kmHigh 27.8°C · Low 22.6°C · 754 mm rain
- Montelíbano in SeptemberColombia · 183 kmHigh 29.8°C · Low 23.4°C · 182 mm rain
- Chigorodó in SeptemberColombia · 193 kmHigh 29.1°C · Low 22.6°C · 395 mm rain
- Barrancabermeja in SeptemberColombia · 205 kmHigh 29.9°C · Low 23.3°C · 393 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 Bello) is explained once on the Bello year overview and on the Sources, method and limits page.
Medellín lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.