expatwhy.

Piura weather by month

Piura runs from about 21°C in August to 29°C in March, with February the wettest month at 81 mm.

warmest month

March

29°C

coolest month

August

21°C

wettest month

February

81 mm

worst air month

June

9 µg/m³

The whole year, month by month.

Monthly climate normals for Piura
MonthAvg tempRainSunPM2.5
January27°C16 mm320 h6
February28°C81 mm290 h5
March29°C4 mm323 h7
April28°C13 mm321 h6
May24°C26 mm336 h7
June23°C1 mm314 h9
July22°C0 mm333 h8
August21°C0 mm336 h7
September22°C6 mm326 h7
October23°C2 mm351 h8
November23°C0 mm317 h7
December25°C14 mm342 h7

About 3,909 hours of sun a year. Roughly 16 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 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.