Puerto Vallarta weather by month
Puerto Vallarta runs from about 22°C in March to 28°C in September, with August the wettest month at 194 mm.
warmest month
September
28°C
coolest month
March
22°C
wettest month
August
194 mm
worst air month
May
19 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 22°C | 3 mm | 290 h | 10 |
| February | 22°C | 41 mm | 258 h | 9 |
| March | 22°C | 0 mm | 357 h | 11 |
| April | 22°C | 0 mm | 351 h | 8 |
| May | 25°C | 0 mm | 359 h | 19 |
| June | 27°C | 90 mm | 251 h | 9 |
| July | 27°C | 169 mm | 280 h | 11 |
| August | 27°C | 194 mm | 261 h | 10 |
| September | 28°C | 145 mm | 266 h | 8 |
| October | 27°C | 74 mm | 313 h | 9 |
| November | 25°C | 12 mm | 304 h | 10 |
| December | 22°C | 0 mm | 312 h | 10 |
About 3,602 hours of sun a year. Roughly 72 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.