Bacalar weather by month
Bacalar runs from about 24°C in December to 30°C in May, with June the wettest month at 449 mm.
warmest month
May
30°C
coolest month
December
24°C
wettest month
June
449 mm
worst air month
June
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 61 mm | 303 h | 5 |
| February | 24°C | 14 mm | 309 h | 6 |
| March | 27°C | 13 mm | 365 h | 6 |
| April | 28°C | 20 mm | 355 h | 6 |
| May | 30°C | 8 mm | 365 h | 9 |
| June | 28°C | 449 mm | 243 h | 12 |
| July | 28°C | 160 mm | 308 h | 9 |
| August | 28°C | 187 mm | 327 h | 7 |
| September | 28°C | 107 mm | 330 h | 5 |
| October | 26°C | 274 mm | 258 h | 5 |
| November | 25°C | 142 mm | 291 h | 5 |
| December | 24°C | 77 mm | 285 h | 5 |
About 3,739 hours of sun a year. Roughly 136 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 2026-05-25. Full method, licences and the list of sources we rejected are on the methodology page.