On 3.6, the Department of Astronomy, Geophysics and Philippine atmosphere (Pagasa) officially announced the end of the hot season and entered the rainy season. Along with that, the country announced that the suspension of the heat index (Heat index) daily - a common measure shows the heat level that affects the human body.
According to PAGASA, this decision aims to focus resources on providing timely and accurate information on weather risks, especially heavy rain, flooding, flash floods and landslides - constant dangers during the rainy season of this island nation.
Accordingly, from June 3, PAGASA will stop issuing temperature indexes at 5:00 p.m. daily, and will only issue them again in March 2026 - the start of the dry season and peak hot weather in many regions across the country. However, people can still access temperature index data from automated weather stations and iHeat Map Maps on PAGASA's website.
A special warning has also been issued for areas that are still suffering from prolonged heat. The weather forecast agency recommends that people continue to update information from local authorities and take health protection measures in high temperature conditions.
Not only the Philippines, many other Asian countries are also witnessing a strong change in the weather. After many weeks of recording extreme temperatures exceeding 40 degrees Celsius, Thailand and Laos have welcomed heavy rains at the beginning of the season. In northern Thailand, heavy thunderstorms in early June caused flooding in some low-lying areas.
In Vietnam, the National Center for Hydro-Meteorological Forecasting forecasts widespread rain lasting from June 3 to at least June 8 in the Northern, North Central, Central Highlands and Southern provinces.
Because they have just experienced a severe heat wave with a very high temperature, when it rains, it is easy to be accompanied by extreme weather phenomena such as tornadoes, hail, thunderstorms and strong gusts of wind. Strong heavy rains that occur in a short period of time can cause flash floods and landslides in mountainous areas, at the foot of hills, and low-lying areas that are likely to be partially flooded.
Meanwhile, China recorded unusually heavy rains in Guangxi province, causing property damage and forcing thousands of people to evacuate.
China's Ministry of Water Resources warned that a series of rivers in the South could exceed the warning level in the coming days.
Extreme weather developments in Asia clearly reflect the unusual nature of the regional climate in 2025.
