Santa Marta weather by month
Santa Marta runs from about 27°C in November to 29°C in July, with June the wettest month at 251 mm.
warmest month
July
29°C
coolest month
November
27°C
wettest month
June
251 mm
worst air month
May
11 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 29°C | 2 mm | 350 h | 7 |
| February | 28°C | 22 mm | 322 h | 8 |
| March | 29°C | 2 mm | 368 h | 8 |
| April | 29°C | 26 mm | 329 h | 8 |
| May | 29°C | 71 mm | 311 h | 11 |
| June | 28°C | 251 mm | 300 h | 9 |
| July | 29°C | 72 mm | 345 h | 10 |
| August | 29°C | 125 mm | 339 h | 10 |
| September | 29°C | 130 mm | 303 h | 9 |
| October | 28°C | 114 mm | 315 h | 8 |
| November | 27°C | 149 mm | 284 h | 7 |
| December | 28°C | 24 mm | 318 h | 6 |
About 3,884 hours of sun a year. Roughly 98 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.