expatwhy.

Sukhothai weather by month

Sukhothai runs from about 25°C in December to 33°C in April, with June the wettest month at 402 mm.

warmest month

April

33°C

coolest month

December

25°C

wettest month

June

402 mm

worst air month

April

47 µg/m³

The whole year, month by month.

Monthly climate normals for Sukhothai
MonthAvg tempRainSunPM2.5
January25°C42 mm306 h26
February27°C2 mm315 h33
March30°C58 mm327 h40
April33°C2 mm347 h47
May31°C234 mm300 h25
June29°C402 mm270 h17
July28°C370 mm201 h13
August28°C300 mm231 h11
September28°C322 mm227 h9
October28°C258 mm308 h10
November27°C40 mm305 h12
December25°C4 mm328 h17

About 3,465 hours of sun a year. Roughly 183 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.