Southern Thailand set for heavy rain and Bangkok for warmer conditions

Isolated heavy to very heavy rain is expected to continue across southern Thailand over the next 24 hours, particularly in Prachuap Khiri Khan, Chumphon and Surat Thani, according to the Thai Meteorological Department’s outlook issued at 5pm on Friday (November 13, 2026).

Residents were advised to beware of heavy to very heavy rain and accumulated rainfall, which could cause flash floods and rapid run-off, especially on foothill slopes near waterways and in low-lying areas.

Warmer weather and patchy rain in upper Thailand with cool and misty mornings in North and Northeast

Temperatures are expected to rise in upper Thailand, with rain in some areas, although mornings in the North and Northeast will remain cool with light mist.

Residents in upper Thailand were advised to look after their health as the weather changes, while farmers should prepare to protect their crops from possible damage.

The conditions reflect a weakening of the fairly strong high-pressure system, or cold air mass, over upper Thailand and the South China Sea.

Meanwhile, a moderate northeast monsoon and southeasterly winds prevail over the Gulf of Thailand and the South.

Winds and waves in the lower Gulf of Thailand are easing to moderate levels, with waves about 2 metres high and exceeding 2 metres in thundershowers.

Mariners in the Gulf of Thailand and the Andaman Sea should check their routes and navigate with caution.

Thailand forecast from 6pm on Friday (November 13) to 6pm on Saturday (November 14)

North

• Mornings will be cool with light mist. Isolated rain is also expected.
• Minimum temperatures will range from 17–24°C and maximum temperatures from 25–33°C.
• Mountaintops will be cold, with lows of 10–15°C.
• Northeasterly winds will blow at 10–20 km/h.

Northeast

• Mornings will be cool with light mist.
• Temperatures are expected to rise by 1–2°C, with isolated rain also forecast.
• Minimum temperatures will range from 20–24°C and maximum temperatures from 30–33°C.
• Mountaintops will be cool to cold, with lows of 11–17°C.
• Northeasterly winds will blow at 10–25 km/h.

Central Thailand

• Mostly cloudy conditions with isolated rain are expected, with temperatures rising by 1–2°C.
• Minimum temperatures will range from 20–25°C and maximum temperatures from 31–33°C.
• Easterly winds will blow at 10–20 km/h.

East

• Mostly cloudy conditions are expected, with temperatures rising by 1–2°C and rain covering 10% of the region, mainly in Chon Buri, Rayong, Chanthaburi and Trat.
• Minimum temperatures will range from 23–26°C and maximum temperatures from 32–34°C.
• Northeasterly winds will blow at 15–30 km/h, with waves about 1 metre high and exceeding 1 metre offshore.

South (east coast)

• Thundershowers are expected across 70% of the region, with isolated heavy rain in Phetchaburi, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala and Narathiwat.
• Isolated very heavy rain is expected in Prachuap Khiri Khan, Chumphon and Surat Thani.
• Minimum temperatures will range from 21–25°C and maximum temperatures from 27–34°C.
• From Surat Thani northwards, northeasterly winds will blow at 15–35 km/h. Waves will reach 1–2 metres, exceeding 2 metres in thundershowers.
• From Nakhon Si Thammarat southwards, easterly winds will blow at 20–35 km/h. Waves will be about 2 metres high, exceeding 2 metres in thundershowers.

South (west coast)

• Thundershowers are expected across 60% of the region, with isolated heavy rain in Ranong, Phang Nga, Phuket, Krabi, Trang and Satun.
• Minimum temperatures will range from 23–25°C and maximum temperatures from 27–34°C.
• Easterly winds will blow at 15–35 km/h.
• Waves will be about 1 metre high, rising to 1–2 metres offshore and exceeding 2 metres in thundershowers.

Bangkok and surrounding areas

• Mostly cloudy conditions are expected, with temperatures rising by 1–2°C and rain covering 10% of the area.
• Minimum temperatures will range from 24–26°C and maximum temperatures from 31–33°C.
• Easterly winds will blow at 10–20 km/h.