Medellín weather in December

December in Medellín: hot, soaked, with muggy air — fine if you can take 22 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Medellín🇨🇴 Colombia · Colombian Andes · City78
  1. 82Jan
  2. 75Feb
  3. 65Mar
  4. 60Apr
  5. 61May
  6. 72Jun
  7. 78Jul
  8. 76Aug
  9. 71Sep
  10. 63Oct
  11. 66Nov
  12. 78Dec

#3 of 12 months in Medellín · #521 of 1413 destinations to visit in December · comfort 78/100 (tier B)

Days
28°C
Nights
18°C
Wet days
22
Sun
9.6 h
Humidity
85%
Daylight
12 h
Medellín, Colombia
Photo: Karlus Morales · Pexels

Traveller notes on Medellín in December

The Medellin forum's answer to December weather is about the shape of the day, not the month: mornings and early afternoons are gorgeous, and it tends to rain after two or three o'clock, so posters tell visitors to put the indoor half of the plan there. What falls is spotty and comes and goes, sometimes with thunder, rather than settling in for the day. The other December fact is the alumbrados - the Christmas lights switch on around 2 December and run to 6 January, and the whole month is festive, with the riverside displays drawing very large crowds. The record explains the hedging: 22 precipitation days but only 150.7mm between them, 28C days feeling like 31C, 17.8C nights, humidity near 85 percent, 9.6 hours of sun, AQI 53.
AlumbradosAfterTwo · December · 1 month ago · Read more on Tripadvisor ↗

Other months in Medellín

Regulars are specific that rain here varies so much by neighborhood that it can be genuinely pouring in Poblado while a nearby area like Laureles stays sunny at the very same hour, weather apps notoriously unreliable at capturing that hyperlocal split. Our row backs that hot, genuinely wet read, 28.7C reading as a hot 33C, over 18.1C nights, with a substantial 222.6mm of rain across an extraordinary 26.5 days and humidity at 84 percent. Regulars are consistent that a downpour typically lasts only 30 minutes to an hour, usually arriving in late afternoon, with plenty of nice weather still available earlier in the day. A compact umbrella carried at all times is the standard advice rather than trusting any single forecast. The record: 9.9 hours of sun, a 6.6 kph wind and AQI 49.
PouringInPobladoSunnyInLaurelesSameHour · September · 1 month ago · Read more on Tripadvisor ↗
The city of eternal spring earns the name in our data: every month of the year tops out between 27 and 29C, and June reads 28.2C over 17.8C, which matches the board's mid-eighties by day and mid-sixties at night almost exactly. The rain column looks alarming at 26.7 days, and regulars defuse it before you can worry - it rains nearly every day but not all day. Sunny morning, shower from about four, sixty to ninety minutes, done. Plan the outdoors for the first half of the day and the 215.7mm stops mattering. At 87.3 percent humidity 28C reads as 32C, which is the one real cost. The record: 9.6 hours of sun, an almost still 6 kph wind and AQI 47.
RainAtFourForNinetyMinutes · June · 1 month ago · Read more on Tripadvisor ↗
The eternal spring is real in the sense that matters: regulars put the whole year at roughly 77 to 82F by day and 58 to 63F at night, and our February reads 28.9C over 18C. They call February part of the drier season, December to March, and our row looks like a flat contradiction at 166.7mm across 21.5 precipitation days. Their own description resolves it - it rarely rains all day here, sometimes in the morning and sometimes in the afternoon but not usually both - which makes those 21.5 days about eight millimetres each. Flash afternoon thunderstorms are the usual form. The record: humidity 82 percent, 9.9 hours of sun, a 5.4 kph wind and AQI 56.
RarelyAllDay · February · 1 month ago · Read more on Tripadvisor ↗
August in the city of eternal spring is warm, flowery and wetter than the nickname implies - our row counts 24 precipitation days carrying 178.8mm, which is most days of the month. The forum's correction is about timing rather than quantity: when it rains here it is usually late afternoon, evening or the middle of the night, often predictable almost to the hour, so the daylight hours mostly survive. They are also blunt that Colombian weather apps are useless inland, forecasting rain and thunderstorms every single day, because microclimates, mountains and altitude defeat them. August still has plenty of flowers, if fewer than July. The record: 29C days that feel like 33C, 18C nights, humidity 82 percent and 10.3 hours of sun.
TheAppSaysRainEveryDay · August · 1 month ago · Read more on Tripadvisor ↗

Year-round notes are on Medellín's overview. Add your own note from Medellín's card on the map.

Medellín climate normals — December

Daytime high28°C / 82°F🥵 hot
Nighttime low18°C / 64°F
Feels like (high)31°C / 88°F
Rainfall151 mm / 5.9 in⛈ soaked
Rainy days22 days
Humidity85%💦 very humid
Dew point16°C / 61°F
Sunshine9.6 h/day
Daylight11.8 h
Wind5 km/h / 3 mph
Air quality (US AQI)53🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Medellín in December

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsThe Monday puentes, Alumbrados navidenos, Year-end holidays in Colombia(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Medellín's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Best weatherMedellín's best weather comes in January, July and December — separate windows, not one continuous season.

December includes La Alborada.

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Best weatherFair weatherToughest weather

What's on in Medellín in December

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Holiday

    The Monday puentes

    1 Jan – 31 DecNational holidayCrowded

    Colombia moves most of its public holidays onto a Monday, so the country takes a long weekend roughly every month. Guatape, Jardin and the road out of the valley are solid on every one of them. Source ↗

  • Opening

    Alumbrados navidenos

    28 Nov – 14 Jan · usuallyChristmas & New YearCrowded

    The utility company strings millions of lights along the river and the main avenues and switches them on at the end of November, then leaves them up into mid-January. Weekend evenings on the river walk are shoulder to shoulder. Source ↗

  • Festival

    La Alborada

    30 Nov – 1 DecChristmas & New YearRisk

    At midnight on the last night of November the whole valley sets off fireworks at once for hours, an unofficial start to Christmas with an ugly history behind it. Nobody in Medellin sleeps through it. Source ↗

  • Season

    The drier weeks between the rains

    15 Dec – 10 MarDry season

    Rain here runs on two cycles rather than one wet season, and the gaps are roughly late December to early March and again through July and August. Those are the weeks the pueblos day trip actually works.

  • Holiday

    Novenas and the December break

    16 Dec – 6 JanChristmas & New YearCrowdedBook early

    Nine nights of neighbourhood novenas from the sixteenth, then a fortnight in which Colombians who live abroad come home. Flights into Rionegro and city apartments both price like a peak season, because it is one. Source ↗

What's on around the world in December →

Nearby, and something's on

Within 300 km of Medellín — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Medellín?

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Medellín in December — FAQ

Is December a good time to visit Medellín?
December in Medellín: hot, soaked, with muggy air — fine if you can take 22 rainy days. It ranks #3 of 12 months for Medellín on SeasonMap's comfort score (78/100).
What is the weather like in Medellín in December?
In December, Medellín averages a daily high of 28°C and a low of 17.8°C, with about 150.7 mm of rain over roughly 22 rainy days.
What is the air quality in Medellín in December?
Medellín has a mean US Air Quality Index of about 53 in December.

Within 300 km: Villa de Leyva's Festival de Luces on 5–7 Dec, and Guatapé's Christmas lights around 15 Nov – 10 Jan.