Bangkok: Thailand has officially entered the winter season of 2025 as of October 23, with the Meteorological Department announcing a slightly later start than usual. The coldest period is expected from mid-December to early February, and there are warnings of heavy rain in the southern region.
According to Thai News Agency, the Meteorological Department confirmed that the winter season's onset was delayed by about a week. The northern and northeastern areas will experience cool weather first, followed by the central and eastern regions. Meanwhile, the southern region will continue to face heavy to very heavy rainfall.
Ms. Suchada Sang Thanasup, Secretary to the Minister of Digital Economy and Society and spokesperson for the Ministry, stated that the winter's arrival indicates a persistent drop in temperatures across upper Thailand, with winds shifting to northeasterly or easterly. Rainfall in these areas will significantly decrease, but cold weather won't be immediate. The forecast indicates the coolest temperatures will occur from mid-December 2025 to early February 2026, with minimum averages of 21-22 degrees Celsius. Northern regions, including Mae Hong Son and Chiang Rai, may see temperatures as low as 7-8 degrees Celsius, with the possibility of frost. Bangkok may experience lows of 18-20 degrees Celsius, while the southern region, especially along the Gulf of Thailand, will continue to see heavy rain, potentially leading to flash floods and strong winds.
Ms. Suchada also advised the public to prepare for variable weather conditions during this transitional period, including thick fog and frost. The public should be cautious of strong winds and sea waves in the south and heed warnings from the Meteorological Department.
Dr. Sukanyanee Yawinchan, Director-General of the Meteorological Department, noted that early in the season, weather instability is expected, with rain in some northeastern, central, eastern, and Bangkok areas. The department will continue to monitor and provide updates to help the public prepare for potential impacts on health, travel, and daily activities.