Cartagena in September
In September, Cartagena averages 31°C (88°F) during the day and 25°C (77°F) at night, with frequent rain — about 16 days of the month see precipitation (175 mm total).
ShoulderConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Cartagena. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Cartagena
September is in the middle of the year for warmth in Cartagena (9th of 12) and one of the wettest months (2nd of 12). Daytime temperature matches the city's annual average. September runs 1°C cooler than August (32°C) and stays flat into October.
September sunrise & sunset in Cartagena
Times shown for Cartagena local time (America/Bogota), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Cartagena — September
Golden-hour and blue-hour windows for the 15th of September, in Cartagena's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Cartagena in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Cartagena's popularity.
Crowds & pricing — September in Cartagena
Cartagena is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Cartagena
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Cartagena — September
Across the year Cartagena's sea swings from 28.1°C (February) to 30.6°C (September) — September sits at 30.6°C.
Cartagena in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 31°C / 88°F | 24°C / 75°F | 5 mm | 1 | 0 |
| February | 31°C / 88°F | 24°C / 75°F | 5 mm | 1 | 0 |
| March | 31°C / 88°F | 25°C / 77°F | 5 mm | 1 | 0 |
| April | 32°C / 90°F | 25°C / 77°F | 25 mm | 3 | 0 |
| May | 32°C / 90°F | 25°C / 77°F | 105 mm | 9 | 0 |
| June | 32°C / 90°F | 25°C / 77°F | 105 mm | 12 | 0 |
| July | 32°C / 90°F | 25°C / 77°F | 105 mm | 12 | 0 |
| August | 32°C / 90°F | 25°C / 77°F | 130 mm | 14 | 0 |
| September | 31°C / 88°F | 25°C / 77°F | 175 mm | 16 | 0 |
| October | 31°C / 88°F | 25°C / 77°F | 220 mm | 17 | 0 |
| November | 31°C / 88°F | 25°C / 77°F | 95 mm | 11 | 0 |
| December | 31°C / 88°F | 24°C / 75°F | 25 mm | 3 | 0 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Cartagena in September →
Frequently asked questions
How hot is Cartagena in September?
In September, Cartagena averages a high of 31°C (88°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in Cartagena in September?
September is quite rainy in Cartagena, with about 16 rainy days on average.
Is September a good time to visit Cartagena?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Cartagena in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Cartagena for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.