Bangkok: Thailand will enter the rainy season this year on May 15, with an expected rainfall of 5 percent more than average and 1-2 tropical storms anticipated to hit Thailand during August and October. Ms. Sukanyanee Yawincharn, Director-General of the Meteorological Department, revealed that the Meteorological Department predicts this year's onset based on three meteorological criteria: consistent rain covering over 60 percent of Upper Thailand, a change in upper winds at approximately 1.5 kilometers to the southwest, and a shift in upper winds at roughly 10 kilometers to the east.
According to Thai News Agency, this year's total rainfall is about 5 percent higher than average, yet less than last year's, which exceeded the average by 10-15 percent. Rainfall from the beginning of the season to July is expected to be 5-10 percent above average in Upper Thailand. In the latter half of the season (August-October), rainfall is predicted to align with the normal average, except for the eastern coast of the South, which may experience 10 percent less rainfall than average. A break in rainfall is anticipated from June to mid-July in the North, Northeast, and upper Central regions, particularly outside irrigation zones experiencing recurring droughts. Authorities urge people to plan water usage to mitigate impacts on agriculture. From August to October, heavy rainfall is expected, with a risk of tropical cyclones potentially causing flash floods, forest runoff, and river overflow. About 1-2 tropical cyclones are predicted to move into Thailand, particularly affecting the Northeast and North.
The influence of the El Ni±o-La Ni±a (ENSO) phenomenon has stabilized into a neutral state, likely to persist until September to November. Consequently, the rainy season is projected to be well-distributed, with rainfall close to or slightly above average. Concerns about severe flooding akin to the events in 2011 are minimal.
The Meteorological Department emphasizes that the public and relevant agencies should closely monitor weather forecasts and prepare for potential adverse weather conditions, including effective water usage planning. Announcements and updates are available on the Meteorological Department website www.tmd.go.th. For further information, individuals can contact 0-2399-4012-13 or the hotline 1182, available 24 hours a day.