The Bangkok Metropolitan Administration updated today's weather forecast: Bangkok and the surrounding metropolitan area will experience thunderstorms covering 60% of the area. A warning has been issued for the period 21-25 October of increased rainfall, with heavy to very heavy rain in some locations, and a need to monitor for flash floods.
On 18 October 2026, the Facebook pageBangkok Metropolitan Administrationposted a message stating that today's weather forecast for Bangkok and its vicinity predicts thunderstorms covering 60% of the area.
Daily situation report for 18 October 2026
Bangkok and surrounding metropolitan area: Thunderstorms across 60% of the area.
Maximum temperature 33-35 °C / minimum 24-26 °C.
In the past 24 hours (since 07:00): heavy to very heavy rainfall was recorded in Bangkok, with the highest rainfall at the Khlong Thawi Watthana-Khlong Phasi Charoen measuring station in Nong Khaem District at 110.0 mm, Khlong Bang Chak station in Bang Khae District at 75.0 mm, and Wat Sai station in Bang Kho Laem District at 60.0 mm.
There are reports of five main roads where water drainage was accelerated; these areas are currently dry and normal.https://dds.bangkok.go.th/flood_report_search_result.php. . .
General weather conditions in Thailand
The 24-hour forecast indicates heavy rain in some areas of the Eastern and Southern regions. Northern Thailand will have scattered thunderstorms. Residents in these areas are advised to be cautious of dangers from thunderstorms, heavy rain, and accumulated rainfall that may cause flash floods and rapid runoff.
Furthermore, from 21-25 October 2026, increased rainfall with heavy to very heavy rain in some places, along with strong gusty winds in certain areas, is expected in the lower Northeastern region, Central region including Bangkok and its vicinity, the Eastern region, and upper Southern region. During this period, residents should closely follow weather updates and stay vigilant against the dangers of heavy and accumulating rain that could lead to flash floods and rapid runoff.
Real-time Bangkok weather updates can be checked at
If flooding problems are encountered, reports can be made via Line: @traffyfondue, phone 0 2248 5115, or the Bangkok hotline 1555, available 24 hours.
Thanks to information from the Facebook page of Bangkok Metropolitan Administration.