Sincelejo Weather in September
September in Sincelejo brings very high temperatures around 32°C (90°F) during the day, dropping to 24°C (75°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Sincelejo in September
As part of the rainy season, Sincelejo sees around 10 days of rain in September, with an average of 255 mm (10 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Sincelejo in September
Daytime highs in Sincelejo in September reach 32°C (90°F), with nights around 24°C (75°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Sincelejo in September
The month experiences a moderate amount of sunlight, with 144 hours of sunshine. This provides a nice balance between sunshine and rain.September in Sincelejo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Colombia, check out our Sincelejo's climate page.
Sincelejo Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
32°C (90°F)
Chance of Rain
34%
Precipitation
255 mm (10 in)
Rainy days
10 days
Humidity
84%
Sunshine
144 hours
Percentage Sunshine
Historical weather for Sincelejo in September
Browse day-by-day weather records for Sincelejo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sincelejo historical weather extremes in September
The extremes listed below come from historical weather data collected in Sincelejo from 2005 through 2025.
- The warmest day in September was on September 6, 2023, with a maximum of 37°C (99°F).
- On September 21, 2005, Sincelejo saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 19°C (66°F) on September 25, 2025, marking the coldest September night on record.
Best Places in Colombia in September
Find out more about the weather in Colombia and which places have the best travel conditions in this month. See all of Colombia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sincelejo in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Sincelejo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Colombia, check out our Sincelejo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Sincelejo climate overview or explore weather in Colombia.
