Middle of the wetter season · Weather & things to do
Cartagena in September
Little changes in Cartagena from August: highs stay near 85°F (29°C), lows near 81°F (27°C), and about 7.2 in (182 mm) of rain falls.
With a comfort score of 48/100 (11th of 12), it's one of the toughest months, held back mainly by cloud cover.
- Avg high
- 85°F (29°C)
- Avg low
- 81°F (27°C)
- Rain
- 7.2 in (182 mm)
- Humidity
- 82%
- Cloud cover
- 81%
- Daylight
- ~12 h 03 min
- Comfort score
- 48/100 · Fair
What September feels like
Highs settle around 85°F (29°C), warm enough for short sleeves.
Nights stay warm too, with lows averaging 81°F (27°C).
Humidity averages 82%, so the air feels sticky and the heat feels stronger than the thermometer says.
Expect regular rain: about 7.2 in (182 mm) falls in the month.
Expect plenty of overcast days, with cloud cover near 81%.
Plan around September
September is one of the lower-scoring months here; the best are January – March.
- Start of the wettest three-month stretch (September – November), which brings about 23.8 in (605 mm) in total.
- Comfort holds steady from August (50 → 48/100).
- Our Colombia: Coffee to Caribbean route recommends Dec – Mar, so September falls outside its suggested window.
What to pack for September
- Light, breathable clotheshighs average 85°F
- Sunscreen, sunglasses and a hathigh UV on clear days
- Quick-dry fabrics82% average humidity
- Rain jacket and waterproof shoes7.2 in of rain on average
- Comfortable walking shoesmost picks involve some walking
What to do in Cartagena in September
Wet days call for a roof: these picks favor sit-down and indoor stops, plus a few for drier spells.
Castillo San Felipe de Barajas
Massive Spanish fortress with tunnels, built on San Lázaro hill to guard the city.
Las Bóvedas
Former vaults in the city wall now holding craft and souvenir shops.
Why now An indoor-leaning stop for a month with 7.2 in of rain.
Alquímico
Three-story cocktail bar with a rooftop, using spirits and produce from its own farm.
Getsemaní
Former working-class barrio of murals and street life around Plaza de la Trinidad.
La Cevichería
Small spot near the walls famous for Caribbean ceviches and seafood rice.
Why now A sit-down stop to wait out showers in a month with 7.2 in of rain.
Nearby in September
- Medellín in September~287 mi · highs 75°F, 8.0 in rain · 6°C (10°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Cartagena in September: quick answers
Is September a good time to visit Cartagena?
It's one of the tougher months here, scoring 48/100, held back mainly by cloud cover. The best months are January – March. Expect highs of 85°F (29°C) and 7.2 in (182 mm) of rain. Our Colombia: Coffee to Caribbean route recommends Dec – Mar, so September is outside its suggested window.
How hot is Cartagena in September?
Average highs are 85°F (29°C) and average lows 81°F (27°C), making it the 5th-coldest month by daytime highs.
Does it rain a lot in Cartagena in September?
Yes: about 7.2 in (182 mm) of rain falls across September on average, the 2nd-wettest month of the year. The annual total is about 53.9 in (1369 mm).
What should I pack for Cartagena in September?
Bring light, breathable clothes (highs average 85°F), sunscreen, sunglasses and a hat (high UV on clear days), quick-dry fabrics (82% average humidity), rain jacket and waterproof shoes (7.2 in of rain on average) and comfortable walking shoes (most picks involve some walking).
More on Cartagena
Planning Cartagena in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.