Climate averages 1991–2020
Cartagena weather
in September.
A hot, very wet month: the 10th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Cartagena: daytime highs average 29.5°C and nights cool to about 24.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 210 mm of rain on roughly 28 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Sabanalarga (68 km away). In September its highs average 30.0°C, about as warm as Cartagena, with 251 mm of rain.
Among the 46 cities listed in Colombia, Cartagena ranks 14th of 46 for the warmest September highs and 27th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Cartagena is 3.1°C warmer than that mean.
From September to October, average highs fall by 0.5°C to 29.1°C, and monthly rainfall rises from 210 mm to 265 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
Cartagena climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.9°C24.5°C | 24.5°C | 9.0 | 2.3 | 11.612 h |
| February | 33.4°C25.0°C | 25.0°C | 6.3 | 1.7 | 11.812 h |
| March | 33.4°C25.2°C | 25.2°C | 19 | 4.4 | 12.112 h |
| April | 32.1°C25.4°C | 25.4°C | 75 | 15.6 | 12.412 h |
| May | 30.3°C25.2°C | 25.2°C | 181 | 26.1 | 12.613 h |
| June | 30.2°C25.2°C | 25.2°C | 176 | 25.4 | 12.713 h |
| July | 30.3°C25.1°C | 25.1°C | 157 | 25.0 | 12.713 h |
| August | 30.1°C25.1°C | 25.1°C | 186 | 27.6 | 12.512 h |
| September, selected | 29.5°C24.8°C | 24.8°C | 210 | 28.4 | 12.212 h |
| October | 29.1°C24.4°C | 24.4°C | 265 | 29.2 | 11.912 h |
| November | 29.1°C24.3°C | 24.3°C | 201 | 24.4 | 11.712 h |
| December | 30.1°C24.5°C | 24.5°C | 61 | 10.8 | 11.512 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
- Sabanalarga in SeptemberColombia · 68 kmHigh 30.0°C · Low 24.3°C · 251 mm rain
- Soledad in SeptemberColombia · 98 kmHigh 29.7°C · Low 25.5°C · 228 mm rain
- Barranquilla in SeptemberColombia · 100 kmHigh 29.3°C · Low 25.8°C · 228 mm rain
- Sincelejo in SeptemberColombia · 122 kmHigh 28.8°C · Low 22.7°C · 250 mm rain
- Magangué in SeptemberColombia · 152 kmHigh 29.9°C · Low 24.6°C · 249 mm rain
- Ciénaga in SeptemberColombia · 152 kmHigh 28.7°C · Low 24.3°C · 309 mm rain
- Santa Marta in SeptemberColombia · 170 kmHigh 28.3°C · Low 25.2°C · 140 mm rain
- Cereté in SeptemberColombia · 171 kmHigh 29.9°C · Low 23.5°C · 233 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 Cartagena) is explained once on the Cartagena year overview and on the Sources, method and limits page.