Tulum weather by month
Tulum runs from about 24°C in February to 29°C in May, with June the wettest month at 518 mm.
warmest month
May
29°C
coolest month
February
24°C
wettest month
June
518 mm
worst air month
June
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 25°C | 66 mm | 301 h | 5 |
| February | 24°C | 23 mm | 305 h | 6 |
| March | 27°C | 32 mm | 366 h | 6 |
| April | 27°C | 55 mm | 351 h | 5 |
| May | 29°C | 13 mm | 384 h | 10 |
| June | 28°C | 518 mm | 272 h | 12 |
| July | 28°C | 159 mm | 339 h | 8 |
| August | 28°C | 165 mm | 338 h | 7 |
| September | 28°C | 216 mm | 306 h | 5 |
| October | 26°C | 276 mm | 246 h | 4 |
| November | 25°C | 121 mm | 314 h | 5 |
| December | 24°C | 102 mm | 291 h | 5 |
About 3,813 hours of sun a year. Roughly 154 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.