Monthly climate guide
Sincelejo weather in December
With highs near 33°C (91°F) and lows around 25°C (77°F), December feels very hot in Sincelejo. Rainfall averages about 49 mm (fairly dry) and the sky is a mix of sun and cloud. Daytime highs are 2°C warmer than November and about the same as January.
What stands out in December
- It's one of the drier stretches of the year in Sincelejo.
- Just 120 km apart, but Sincelejo runs about 3°C warmer than Cartagena this month.
- Nights stay warm, rarely below 25°C — air-conditioning helps.
- Humidity near 80% makes 33°C feel stickier than it sounds.
Avg high
33°C
91°F
Avg low
25°C
77°F
Rainfall
49 mm
fairly dry
Humidity
80%
relative
Sky
46%
cloud · a mix of sun and cloud
Sincelejo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 34°C / 93°F | 24°C / 75°F | 13 mm | 75% | 33% |
| February | 35°C / 96°F | 24°C / 76°F | 6 mm | 70% | 34% |
| March | 35°C / 96°F | 25°C / 77°F | 19 mm | 69% | 49% |
| April | 34°C / 94°F | 26°C / 78°F | 102 mm | 74% | 71% |
| May | 33°C / 91°F | 26°C / 78°F | 162 mm | 80% | 82% |
| June | 33°C / 91°F | 26°C / 79°F | 153 mm | 80% | 77% |
| July | 33°C / 91°F | 26°C / 78°F | 187 mm | 81% | 75% |
| August | 33°C / 91°F | 26°C / 78°F | 171 mm | 82% | 78% |
| September | 32°C / 89°F | 26°C / 78°F | 174 mm | 83% | 82% |
| October | 31°C / 88°F | 25°C / 77°F | 174 mm | 85% | 84% |
| November | 31°C / 89°F | 25°C / 77°F | 129 mm | 84% | 70% |
| December | 33°C / 91°F | 25°C / 77°F | 49 mm | 80% | 46% |
What to pack for December
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A small travel umbrella, just in case
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is December a good time to visit Sincelejo?
Compare the months in the chart above to find your ideal window.
Best time to visit Sincelejo →Other Colombia cities in December
Cite or embed this data
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Sincelejo weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/colombia/sincelejo/december
<a href="https://weathercompare.eu/weather/colombia/sincelejo/december">Sincelejo weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/colombia/sincelejo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Sincelejo weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/colombia/sincelejo/december">Sincelejo weather in December</a> – WeatherCompare</p>
Sincelejo in December: quick answers
Is December a good time to visit Sincelejo?
Yes. December is one of the best months for Sincelejo, with highs around 33°C and about 49 mm of rain.
How warm is Sincelejo in December?
Average highs are about 33°C (91°F) and average lows about 25°C (77°F), based on 10 years of daily data.
Does it rain a lot in Sincelejo in December?
Sincelejo typically gets around 49 mm of rain in December — fairly dry.
Figures are long-term averages for the area around Sincelejo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.