Best time to visit Bangkok: month-by-month weather (2026)

January, February, and December stand out as the best months to visit, combining the lowest rainfall totals of the year with the most sunshine hours per day. January averages just 8mm of rain with 10.6 hours of sunshine, and December is similar with 17mm of rain and 10.3 hours of sunshine, while temperatures across this period stay warm without the extremes seen later in the year.

The trade-off is that peak season also includes July and August, months that bring heavy rain of 269mm and 200mm respectively alongside reduced sunshine, so travelers visiting then should expect wetter conditions despite the higher demand. April is the hottest month at a high of 35.4C, sitting outside the peak season but adding to the case for favoring the cooler, drier months at the start and end of the year.