Cooler weather forecast for upper Thailand as South faces heavy rain

The Thai Meteorological Department’s forecast for Saturday (November 7, 2026) to Friday (November 13) indicates that rain will ease across upper Thailand on November 8, although isolated thundershowers will remain, mainly in western parts of the North and Central region.

A high-pressure system, or cool air mass, from China is covering upper Thailand and the South China Sea, bringing easterly winds across upper Thailand and the Gulf of Thailand.

Upper Thailand will see little rain, cooler conditions and strong winds on November 9–13, with temperatures falling by 3–5°C as another fairly strong high-pressure system from China extends over upper Thailand and the South China Sea.

Rainfall will increase in the South on November 8–13, with heavy rain in many areas and isolated very heavy rain as easterly winds strengthen over the Gulf of Thailand, the South and the Andaman Sea.

Waves in the Andaman Sea and Gulf of Thailand will exceed 2 metres in thundershowers throughout this period.

Precautions for November 8–13

People in the South should beware of heavy to very heavy rain and accumulated rainfall, which could trigger flash floods, rapid runoff and mudslides, particularly on foothill slopes near waterways and in low-lying areas.

Mariners in the Gulf of Thailand and Andaman Sea should check their routes, navigate with caution and avoid areas with thundershowers throughout the period.

Regional forecast

North

• Thundershowers will affect 20–40% of the North on November 8–9, mainly its upper and western parts.
• Cool weather is forecast on November 10–13, with temperatures falling by 1–3°C and thundershowers covering 10–30% of the region.
• A westerly trough passing over the upper North on November 11–12 will bring thundershowers, hail and gusty winds to some areas.
• Northeasterly winds will blow at 10–25 km/h. Minimum temperatures will be 18–23°C and maximum temperatures 28–33°C.

Northeast

• Thundershowers will cover 10–20% of the Northeast on November 8, with easterly winds of 10–25 km/h. Minimum temperatures will be 20–25°C and maximum temperatures 31–35°C.
• Cool weather and strong winds are forecast on November 9–13, with temperatures falling by 3–5°C and isolated light rain.
• Northeasterly winds will blow at 15–35 km/h.
• Minimum temperatures will be 17–23°C and maximum temperatures 26–34°C.

Central region

• The Central region will have thundershowers across 30–40% of its area on November 8, with gusty winds and isolated heavy rain.
• Southeasterly winds will blow at 10–20 km/h.
• Minimum temperatures will be 21–26°C and maximum temperatures 31–35°C.
• Cool weather and strong winds are forecast on November 9–13, with temperatures falling by 1–3°C and isolated light rain.
• Northeasterly winds will blow at 15–30 km/h.
• Minimum temperatures will be 19–25°C and maximum temperatures 29–34°C.

East

• Thundershowers will affect 20–40% of the East on November 8, with easterly winds of 10–30 km/h.
• Waves will be below 1 metre.
• Minimum temperatures will be 22–26°C and maximum temperatures 31–35°C.
• Cool weather and strong winds are forecast on November 9–13, with temperatures falling by 1–2°C and isolated light rain.
• Northeasterly winds will blow at 15–35 km/h.
• Waves will be about 1 metre high, rising to 1–2 metres offshore.
• Minimum temperatures will be 21–25°C and maximum temperatures 30–33°C.

South

• Thundershowers will cover 60–70% of each southern coastal region, with isolated heavy rain throughout the forecast period.
• Very heavy rain is also forecast in some areas along the east coast on November 8–13.

East coast

• Easterly winds will blow at 15–35 km/h.
• Waves will reach 1–2 metres.
• Minimum temperatures will be 23–27°C and maximum temperatures 30–36°C.

West coast

• The west coast will have easterly winds of 15–30 km/h on November 8 and 15–35 km/h on November 9–13.
• Waves will be about 1 metre high over these periods, exceeding 1 metre offshore on November 8 and reaching 1–2 metres offshore on November 9–13.
• Minimum temperatures will be 23–26°C and maximum temperatures 31–36°C.

Bangkok and surrounding areas

• Thundershowers will cover 30–40% of Bangkok and surrounding areas on November 8, with southeasterly winds of 10–20 km/h.
• Minimum temperatures will be 24–27°C and maximum temperatures 31–34°C.
• Temperatures will fall by 1–2°C on November 9–13, with strong winds and isolated light rain.
• Northeasterly winds will blow at 10–30 km/h.
• Minimum temperatures will be 23–25°C and maximum temperatures 30–33°C.