Cartagena weather in September
September in Cartagena: sweltering, soaked, with clean air — a great time to visit.
#8 of 12 months in Cartagena · #351 of 604 destinations to visit in September · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Cartagena climate normals — September
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 186 mm / 7.3 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 86% | 💦 very humid |
| Dew point | 25°C / 77°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 12.2 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cartagena in September — FAQ
- Is September a good time to visit Cartagena?
- September in Cartagena: sweltering, soaked, with clean air — a great time to visit. It ranks #8 of 12 months for Cartagena on SeasonMap's comfort score (77/100).
- What is the weather like in Cartagena in September?
- In September, Cartagena averages a daily high of 29.6°C and a low of 25.7°C, with about 185.7 mm of rain over roughly 27.4 rainy days.
- What is the air quality in Cartagena in September?
- Cartagena has a mean US Air Quality Index of about 44 in September.