Thailand enters winter as North and Northeast cool to 18°C, heavy rain persists in South
Thailand’s first winter day sees 18°C lows in the North and Northeast, while heavy rain and rough seas hit the South under Fengshen’s lingering influence
The Thai Meteorological Department (TMD) announced that October 23 2025 marks the official start of Thailand’s winter season, with cooler weather in the North and Northeast and continued heavy rainfall in the South due to Tropical Storm Fengshen.
In the next 24 hours, southern provinces will face heavy to very heavy rain as a monsoon trough moves across the central South, combined with a strong northeast monsoon over the Gulf of Thailand. Residents of Nakhon Si Thammarat, Phatthalung, Songkhla, and Pattani are urged to beware of flash floods, accumulated rain, and difficult road conditions.
Waves in the Andaman Sea and the Gulf of Thailand are expected to reach around 1 metre, and more than 2 metres in stormy areas. Mariners are advised to proceed with caution and avoid sailing during thunderstorms.
In the northern and northeastern regions, morning temperatures will drop slightly, accompanied by strong winds, as a moderate high-pressure system from China extends over upper Thailand. The TMD advises residents to take care of their health as the weather changes.
Meanwhile, Tropical Storm Fengshen, currently over the upper South China Sea, is expected to make landfall in central Vietnam today before weakening rapidly. The storm will not enter Thailand due to the cold air mass from China covering northern Vietnam and the upper South China Sea.
Regional forecasts (6am today – 6am tomorrow)
Bangkok and Vicinity:
Partly cloudy; low 24–26°C, high 33–34°C; northeast winds 10–25 km/h.
North:
Cool morning; low 19–23°C, high 30–34°C; northeast winds 5–15 km/h.
Northeast:
Cool and breezy morning, slight rain in eastern areas; low 18–23°C, high 29–32°C; northeast winds 15–35 km/h.
Central:
Partly cloudy; low 22–24°C, high 31–34°C; northeast winds 10–25 km/h.
East:
Cool in upper areas, slight temperature drop; low 22–24°C, high 32–33°C; northeast winds 15–30 km/h; seas 1 metre, over 2 metres in storms.
South (East Coast):
Thunderstorms in 70% of the area, heavy to very heavy rain in Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, and Narathiwat; low 23–24°C, high 28–32°C; seas 1–2 metres in storms.
South (West Coast):
Thunderstorms in 70% of the area, heavy rain in Phang Nga, Phuket, Krabi, Trang, and Satun; low 23–24°C, high 29–31°C; seas 1–2 metres in storms.
