General Situation
25 May 2026Image:
Weather Map
The moderate southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf with thundershowers and isolated heavy rains in the South. People should beware of heavy rain and accumulation. The moderate wind and waves in the upper Andaman Sea are likely about 2 meters high and above 2 meters high in thundershowers. In the lower Andaman Sea and the upper Gulf, the waves are expected to be 1-2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers.
Bangkok Metropolis and Vicinity Forecast
06:00 Today - 06:00 TomorrowScattered thundershowers mostly in the afternoon to evening. Minimum temperature 26-28 °C. Maximum temperature 35-37 °C. Southwesterly winds 10-20 km./hr.
Announcement Date 25 May 2026
Weather Province Additional
7 days Weather Forecast
24 - 30 May 2026Forecast
During 25 - 27 May 2026, the moderate southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf. Thundershowers are likely in the country and isolated heavy rains are possible in the Norh, the East and the South (West Coast). During 28 - 30 May 2026, the strengthen southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf with the monsoon through will lie across the North, the upper Central and the Northeast. More rains and isolated heavy rains are likely in the areas. During 25 – 26 May, the winds and waves in the Andaman Sea and the upper Gulf are expected 1 - 2 meters high and above 2 meters high in thundershowers. During 27 – 30 May, the strengthening winds and waves in the upper Andaman Sea and the upper Gulf are expected about 2 meters high, 1-2 meters high in the lower Andaman Sea and above 2 meters high in thundershowers.
Announcement Date 24 May 2026
7 day Weather Summary
15 May 2026 - 21 May 2026Forecast
The southwest monsoon prevailed over the Andaman Sea, the southern region and the Gulf of Thailand at the beginning of the period then was rather than strong and blowing over upper Andaman Sea and Thailand. Besides, the low-pressure cell covered upper Vietnam on 18 May and lower northern and upper northeastern regions of Thailand in the second half of the period. These conditions caused abundant rainfall occurred in the second half of the period, particularly, the northern and northeastern regions, in addition to flash flood and landslide were reported in some areas. For the southern region, rainfall throughout the period, especially, west coast of the southern region experienced heavy to very heavy in several areas at the middle and the end of the period with flooding in some areas.
Announcement Date 22 May 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
Announcement Date 01 November 2022