Medellin records about 1685mm of rain across roughly 148 wet days a year, which is a 41% chance on an average day. October is the wettest month at 208mm (12% of the annual total) and January the driest at 72mm. Local rain type: brief showers. Medellín's "eternal spring" climate includes frequent afternoon showers. Morning activities stay dry — plan outdoor sightseeing before noon.
Chance of rain on an average day: 41%
Rainfall climatology for Medellin. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 1685mm |
| Rain days per year | 148 |
| Odds on an average day | 41% |
| Wettest month | October — 208mm over 18 days |
| Driest month | January — 72mm over 6 days |
| Rain type | brief showers |
| Best dry window | January and February offer the driest conditions with warm, spring-like weather. |
| Worst rain window | October brings the heaviest sustained rainfall. |
October delivers 189% more rain than January (208mm vs 72mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 12% of the annual total, so rain in Medellin is spread through the year — there is no season you can rely on being dry.
Medellin rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 18 days in October against 6 in January — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 72mm | 6 | 20% | 25°C |
| February | 86mm | 7 | 23% | 25°C |
| March | 132mm | 11 | 37% | 25°C |
| April | 200mm | 17 | 57% | 26°C |
| May | 196mm | 17 | 57% | 26°C |
| June | 142mm | 12 | 40% | 27°C |
| July | 108mm | 9 | 30% | 27°C |
| August | 136mm | 12 | 40% | 27°C |
| September | 175mm | 15 | 50% | 27°C |
| October | 208mm | 18 | 60% | 26°C |
| November | 164mm | 14 | 47% | 26°C |
| December | 88mm | 8 | 27% | 25°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Medellin we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Medellin records rain on roughly 148 days a year — about a 41% chance on any given day — totalling around 1685mm.
October, with about 208mm over 18 rain days. That is 12% of the entire year's rainfall in a single month.
January is the driest month at 72mm across roughly 6 days. January and February offer the driest conditions with warm, spring-like weather.
Medellín's "eternal spring" climate includes frequent afternoon showers. Morning activities stay dry — plan outdoor sightseeing before noon.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.