Medellin weather by month
Medellin runs from about 20°C in November to 22°C in March, with May the wettest month at 358 mm.
warmest month
March
22°C
coolest month
November
20°C
wettest month
May
358 mm
worst air month
March
19 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 21°C | 37 mm | 332 h | 14 |
| February | 21°C | 93 mm | 295 h | 15 |
| March | 22°C | 60 mm | 329 h | 19 |
| April | 21°C | 244 mm | 255 h | 15 |
| May | 21°C | 358 mm | 245 h | 13 |
| June | 20°C | 268 mm | 279 h | 9 |
| July | 21°C | 121 mm | 324 h | 13 |
| August | 21°C | 192 mm | 331 h | 14 |
| September | 21°C | 157 mm | 306 h | 15 |
| October | 20°C | 229 mm | 289 h | 13 |
| November | 20°C | 279 mm | 262 h | 12 |
| December | 21°C | 138 mm | 290 h | 16 |
About 3,537 hours of sun a year. Roughly 212 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.