Last 7 days
Today
35° / 27° High / Low (°C)
90% Humidity
99% Rain probability
Thunderstorm Condition
~5h Rain duration
What this means
In Bangkok on 21 Jun 2026, rain is expected: 99% chance, up to 3.2 mm forecast (source: Open-Meteo).
A thunderstorm is expected today for around 5 hours — 99% probability, up to 3.2mm forecast. An umbrella is the right call.
Rain season
Bangkok's wet season (May–October) brings daily tropical rain, mostly in the afternoon — intense for 30–90 minutes, then clearing. September and October are the most challenging months: accumulated rainfall saturates the city's drainage, and tidal effects on the Chao Phraya River amplify flood risk. The dry season (November–April) is reliable — virtually zero chance of rain.