Bangkok in February

February is the last gasp of Bangkok's cool, dry stretch — still very pleasant by Western-summer standards but already warming noticeably from January. Average highs creep up to 33 °C and humidity holds around 73%. Tourist crowds remain heavy for the first three weeks (Chinese New Year often spills into early February, and Valentine's Day brings a domestic-tourism surge), then taper as the hot season begins to bite. February is also peak season for cycling tours, walking food tours, and outdoor activities — the last reliable window before April's heat closes them off.

The downside is brutal air quality. February historically posts Bangkok's worst PM2.5 readings of the year — the seasonal agricultural burning across northern Thailand and the Khorat Plateau combines with windless high-pressure inversions to trap pollutants for days at a time. AQI readings above 150 are common; above 200 happens. Anyone visiting with kids, asthma, or pregnancy should pack N95s and use them. Indoor activities — Michelin-starred dining, Thai cooking classes, MBK and Siam Paragon shopping, the SEA Life aquarium under Siam Paragon — become the default plan B for the worst air days.