Cartagena weather by month
Cartagena runs from about 27°C in November to 29°C in March, with November the wettest month at 254 mm.
warmest month
March
29°C
coolest month
November
27°C
wettest month
November
254 mm
worst air month
May
16 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 28°C | 4 mm | 349 h | 9 |
| February | 28°C | 7 mm | 319 h | 12 |
| March | 29°C | 13 mm | 361 h | 11 |
| April | 29°C | 76 mm | 320 h | 12 |
| May | 29°C | 183 mm | 285 h | 16 |
| June | 28°C | 203 mm | 265 h | 13 |
| July | 28°C | 139 mm | 307 h | 13 |
| August | 28°C | 193 mm | 290 h | 10 |
| September | 28°C | 224 mm | 261 h | 8 |
| October | 28°C | 145 mm | 286 h | 6 |
| November | 27°C | 254 mm | 268 h | 8 |
| December | 28°C | 64 mm | 309 h | 9 |
About 3,620 hours of sun a year. Roughly 149 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 2026-05-23. Full method, licences and the list of sources we rejected are on the methodology page.