Bangkok operates on a perpetual simmer, with temperatures hovering between 26°C and 35°C year-round and little variation to speak of.
The wet season brings torrential afternoon downpours that drench the city in minutes, making waterproof footwear and quick-dry fabrics non-negotiable.
Even the 'cool' season rarely dips below 25°C during the day, though mornings can feel almost refreshing by local standards.
Humidity sits at a relentless 70-90% throughout the year, turning any walk into a sweating contest you will lose.
Light-coloured linen becomes your most valuable asset here, as dark fabrics transform into portable saunas within seconds of stepping outside.
Bangkok doesn't do spring, summer, autumn, or winter—just hot, hotter, and hot-with-rain.