Daily Weather Forecast
23 August 2026Announcement Date 23 August 2026
Forecast Additional Video Formats
General Situation
23 Aug 2026
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Weather Map
The monsoon trough move to lies across the upper North and upper Laos into the tropical storm “NARRA” over the Gulf of Tonkin while the rather strong southwest monsoon prevail over the Andaman Sea, Thailand and the Gulf. Isolated heavy rains are forecast in the North, the upper Northeast, the Central and the East. People in the areas should beware of heavy rains and accumulation that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands.
The rather strong winds force the waves in the upper Andaman Sea up to be 2-3 meters high and above 3 meters high in thundershowers. In the upper Gulf, the waves are expected about 2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers, small boats in the upper Andaman Sea keep ashore.
In addition, the tropical storm “NARRA” over the Gulf of Tonkin. This storm is likely to make landfall over the South of Guangxi, China during 24-25 August 2026. This storm will not move to Thailand and no direct effect on Thailand’s weather.
The travellers should check weather information before start the journey.
Bangkok Metropolis and Vicinity Forecast
06:00 Today - 06:00 TomorrowFairly widespread thundershowers and isolated heavy rain. Minimum temperature 25-27 °C. Maximum temperature 32-33 °C. Southwesterly winds at 10-25 km./hr.
Announcement Date 23 August 2026
Weather Province Additional
7 days Weather Forecast
23 – 29 August 2026Forecast
During 23 – 26 August 2026, the monsoon trough move to lies across Myanmar and the upper Laos into the tropical storm “NARRA” over the Gulf of Tonkin while the rather strong southwest monsoon prevail over the Andaman Sea, Thailand and the Gulf. Isolated heavy rains are forecast mostly in western part of the North, the upper Northeast, the Central and the East.During 27 – 29 August 2026, the southwest monsoon prevailing over the Andaman Sea, Thailand and the Gulf will be strengthen. More rains and isolated heavy to very heavy rains are likely in western part of the North, the Northeast, the Central, the East and the South (west coast) regions while the monsoon trough move to lies across Myanmar and the upper Laos. The rather strong wind forces the waves prevails over the upper Andaman Sea from Phangnga northward up to be 2 - 3 meters high and above 3 meters high in thundershowers while about 2 meters high in the upper Gulf and above 2 meters high in thundershowers.
Caution
During 27 – 29 August 2026, people in western part of the North, the upper Northeast, the Central, the East and the South (west coast) regions should beware of heavy to very heavy rains and accumulation that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands.
All ships should proceed with caution and keep off thundershowers, small boats in the upper Andaman Sea should keep ashore throughout the period.
Announcement Date 23 Aug 2026
7 day Weather Summary
14 August 2026 - 20 August 2026Forecast
The monsoon trough lay across Myanmar, upper northern Thailand and upper Laos extending into a low-pressure cell over upper Vietnam in the first half of the period. After that, it shifted southward to lie across the northern and upper northeastern regions of Thailand, extending into an active low-pressure cell over the South China Sea and Hainan Island at the end of the period. Additionally, the rather active southwest monsoon prevailed over the Andaman Sea, Thailand and the Gulf of Thailand almost the entire period. These conditions brought abundant rainfall in upper Thailand during the second half of the period, particularly the northern and northeastern regions resulting in flooding in some areas. In the southern region, rainfall was mainly observed along the west coast.
Announcement Date 21 Aug 2026
Previous
Monthly Weather Forecast
November 2022Forecast
Upper Thailand will be more cold especially the northern and northeastern regions with some thunderstorms on certain days. For the mountain tops, mountain peaks, and mountain ranges, the weather is generally cold. This is because The high pressure area from China will extend to cover the North and Northeast periodically. It will be mostly moderate power. the southern part It continues to rain heavily. especially the east coast from Chumphon down There are still thunderstorms in 60 - 80 percent of the area with heavy rain in many areas and very heavy in some places.This will cause flash floods and flash floods, as well as overflowing riverbanks in some places. For wind waves in the Gulf of Thailand will be strong. In some periods, there will be waves 2 - 4 meters high, while the Andaman Sea will have 1-2 meters high because the northeast monsoon still prevails over the Gulf of Thailand and the South. It will have strength from time to time. In addition, there will be a monsoon trough that lies across the central South in some periods. In addition, in some periods there will be an active low pressure cell moving closer. and has a high chance of moving through the southern region
Caution
In summary, this month, the total rainfall in the northern and northeastern regions is expected to be 10% less than normal, and the central and eastern regions are close to normal. The southern region is 10 percent above normal, while the average landscape is still slightly above normal.
Announcement Date 01 November 2022