The Meteorological Department warns of a new round of thunderstorms, strong gusts and possible lightning across northern, northeastern, central, eastern and Bangkok areas from 4 to 7 October 2026, with heavy rain in some spots. Rain may start in the north and northeast before reaching central Thailand and Bangkok. Sea waves over 2 metres are forecast where storms occur in the Gulf and Andaman Sea, so boat operators should avoid those areas. For a small business, plan outdoor jobs, stock deliveries and staff travel for those days, and secure loose signage and equipment.