Mérida weather by month
Mérida runs from about 23°C in February to 32°C in May, with June the wettest month at 282 mm.
warmest month
May
32°C
coolest month
February
23°C
wettest month
June
282 mm
worst air month
June
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 24°C | 38 mm | 258 h | 8 |
| February | 23°C | 8 mm | 303 h | 8 |
| March | 28°C | 9 mm | 339 h | 7 |
| April | 28°C | 24 mm | 347 h | 8 |
| May | 32°C | 3 mm | 376 h | 10 |
| June | 29°C | 282 mm | 278 h | 12 |
| July | 28°C | 150 mm | 336 h | 10 |
| August | 28°C | 198 mm | 337 h | 11 |
| September | 28°C | 148 mm | 316 h | 10 |
| October | 26°C | 171 mm | 281 h | 9 |
| November | 25°C | 30 mm | 311 h | 8 |
| December | 23°C | 34 mm | 284 h | 8 |
About 3,766 hours of sun a year. Roughly 109 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.