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The weather in Cartagena in September is very hot. The average temperatures are between 26°C and 32°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Cartagena.
Cartagena should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Cartagena in September 2025.
If you’re planning to visit Cartagena in the near future, we highly recommend that you review the 14 day weather forecast for Cartagena before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 34° / 25° | 0 | 31 | 0 | 17 mm | Ok | Cartagena in January |
| February | 34° / 25° | 1 | 28 | 0 | 16 mm | Ok | Cartagena in February |
| March | 34° / 26° | 3 | 28 | 0 | 61 mm | Ok | Cartagena in March |
| April | 33° / 26° | 9 | 21 | 0 | 168 mm | Ok | Cartagena in April |
| May | 32° / 26° | 18 | 13 | 0 | 305 mm | Ok | Cartagena in May |
| June | 32° / 26° | 17 | 13 | 0 | 244 mm | Ok | Cartagena in June |
| July | 33° / 26° | 14 | 17 | 0 | 192 mm | Ok | Cartagena in July |
| August | 32° / 26° | 18 | 13 | 0 | 256 mm | Ok | Cartagena in August |
| September | 32° / 26° | 20 | 10 | 0 | 281 mm | Ok | Cartagena in September |
| October | 31° / 25° | 19 | 12 | 0 | 377 mm | Ok | Cartagena in October |
| November | 31° / 25° | 15 | 15 | 0 | 300 mm | Ok | Cartagena in November |
| December | 32° / 25° | 4 | 27 | 0 | 93 mm | Good | Cartagena in December |