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Hoi An weather by month

Hoi An runs from about 23°C in January to 31°C in June, with November the wettest month at 516 mm.

warmest month

June

31°C

coolest month

January

23°C

wettest month

November

516 mm

worst air month

April

30 µg/m³

The whole year, month by month.

Monthly climate normals for Hoi An
MonthAvg tempRainSunPM2.5
January23°C143 mm246 h17
February24°C44 mm262 h15
March25°C35 mm308 h19
April29°C1 mm355 h30
May29°C71 mm284 h25
June31°C77 mm343 h23
July29°C182 mm310 h15
August31°C56 mm371 h16
September28°C304 mm260 h11
October26°C514 mm218 h11
November25°C516 mm213 h16
December23°C432 mm104 h14

About 3,274 hours of sun a year. Roughly 181 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.