Temperatures across various regions in Thailand to go up to 40-41°C between 31 Mar to 6 Apr

Hot and hazy conditions are expected during the day in upper Thailand, along with very hot weather in parts of the North, Northeast, and Central regions.

The Thai Meteorological Department has urged the public to take care of their health as temperatures continue to climb across the country.

According to the weather forecast for 31 March to 6 April 2026, a heat low-pressure system will dominate upper Thailand, bringing hot and hazy conditions during the day and very hot weather in parts of the North, Northeast, and Central regions. Weak southerly and southwesterly winds over upper Thailand will also bring isolated thunderstorms and gusty winds.

Over the Gulf of Thailand, the South and the Andaman Sea, easterly and southeasterly winds will prevail during this period, causing hot days with scattered thunderstorms. From 2–6 April 2026, westerly winds will move in over the Andaman Sea, the South and the Gulf, leading to fewer showers but even hotter conditions. Waves in both the Gulf and the Andaman Sea are also expected to be around 1m high, rising above 1m in areas with thunderstorms.

The Department has advised people in upper Thailand to protect themselves from the heat and to be alert for thunderstorms and strong gusts. Further, they should avoid open spaces, large trees, and unstable structures or billboards during stormy conditions. Farmers are urged to strengthen their fruit trees and prepare to prevent damages that could happen to agricultural and pet products, as well as maintain health due to the hot weather throughout the period.

Regional forecast: 31 March–6 April 2026

Northern

• 1–6 Apr: Hot to very hot in many areas with haze.
• Minimum temperature: 17–26 °C
• Maximum temperature: 36–42 °C
• Southwesterly winds 5–15 km/hr

Northeastern

• 31 Mar–6 Apr: Hot to very hot with haze. Isolated thunderstorms with gusty winds.
• Minimum temperature: 21–27 °C
• Maximum temperature: 36–41 °C
• Southerly winds 10 –15 km/hr

Central

• 31 Mar–6 Apr: Hot to very hot with haze. Isolated thunderstorms and gusty winds, mainly in the lower Central region.
• Minimum temperature: 23–27 °C
• Maximum temperature: 35–41 °C
• Southerly winds 10–15 km/hr

Eastern

• 31 Mar–6 Apr: Hot days with haze and isolated thunderstorms with gusty winds, mostly along the coast.
• Minimum temperature: 23–28 °C
• Maximum temperature: 33–39 °C
• Southerly winds 10–30 km/hr
• Wave height: below 1 meter, rising above 1 meter in thunderstorms

Southern (East Coast)

• 31 Mar–1 Apr: Hot days with isolated thunderstorms and gusty winds.
• Southeasterly winds 15–30 km/hr
• Wave height: about 1 meter, above 1 meter in thunderstorms

• 2–6 Apr: Hot days with isolated thunderstorms.
• Westerly winds 15–30 km/hr
• Wave height: about 1 meter, above 1 meter in thunderstorms

• Minimum temperature: 21–27 °C
• Maximum temperature: 32–38 °C

Southern (West Coast)

• 31 Mar–1 Apr: Hot days with isolated thunderstorms and gusty winds.
• Easterly winds 15–30 km/hr
• Wave height: about 1 meter, above 1 meter in thunderstorms

• 2–6 Apr: Hot days with isolated thunderstorms.
• Northwesterly winds 15–30 km/hr
• Wave height: about 1 meter, above 1 meter in thunderstorms

• Minimum temperature: 23–27 °C
• Maximum temperature: 33–38 °C

Bangkok Metropolitan

• 1–6 Apr: Hot days with haze and isolated thunderstorms with gusty winds.
• Minimum temperature: 25–28 °C
• Maximum temperature: 33–39 °C
• Southerly winds 10 – 15 km/hr

According to Thaiger, the Bangkok Metropolitan Administration (BMA) issued a formal alert on 1 April 2026, stating that the country's heat index has climbed into the “Dangerous” category.

Health officials have advised the general public to closely monitor their physical condition, while vulnerable groups are urged to seek immediate medical attention should they experience any abnormal symptoms related to heat exhaustion.