expatwhy.

Banos weather by month

Banos runs from about 17°C in August to 19°C in February, with December the wettest month at 363 mm.

warmest month

February

19°C

coolest month

August

17°C

wettest month

December

363 mm

worst air month

March

10 µg/m³

The whole year, month by month.

Monthly climate normals for Banos
MonthAvg tempRainSunPM2.5
January18°C292 mm285 h7
February19°C253 mm264 h8
March19°C206 mm293 h10
April19°C162 mm284 h7
May19°C232 mm292 h4
June17°C247 mm253 h5
July17°C262 mm288 h5
August17°C131 mm319 h6
September17°C134 mm303 h6
October18°C185 mm341 h6
November18°C174 mm310 h7
December18°C363 mm322 h9

About 3,554 hours of sun a year. Roughly 257 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.