Start of Southwest Monsoon
30 May 2026
PRESS RELEASE
DOST-PAGASA S&T Media Service
Quezon City, 30 May 2026
START OF THE SOUTHWEST MONSOON
Recent analyses over the past days have shown the presence of southwesterly winds over the western section of the country, and may continue due to the recent development of a Tropical Cyclone over the Philippine Sea. With the intrusion of westerly winds and the progression of the general meteorological pattern across the country, these developments suggest the start of the Southwest Monsoon (Habagat), which is one of the precursors of the onset of the rainy season.
As the Habagat becomes a more dominant weather system, occasional to frequent rains and thunderstorms are expected, particularly over the western sections of the country. This may lead to the possible onset of the rainy season in the coming days.
However, there may be rain breaks that last a few days or weeks, known as monsoon breaks.
PAGASA will continue to monitor the weather and climate situation in the country. The public and all concerned agencies are advised to take precautionary measures against the adverse impacts of Habagat and other climate and weather events.
For more information, you may reach us via phone at (02) 8284-0800 local 4801 (Weather Forecasting Section) and 4920 or 4921 (Climate Monitoring and Prediction Section) or email at information@pagasa.dost.gov.ph.
Original Signed:
Original Signed:
NATHANIEL T. SERVANDO, Ph.D.
Administrator
DOST-PAGASA S&T Media Service
Quezon City, 30 May 2026
START OF THE SOUTHWEST MONSOON
Recent analyses over the past days have shown the presence of southwesterly winds over the western section of the country, and may continue due to the recent development of a Tropical Cyclone over the Philippine Sea. With the intrusion of westerly winds and the progression of the general meteorological pattern across the country, these developments suggest the start of the Southwest Monsoon (Habagat), which is one of the precursors of the onset of the rainy season.
As the Habagat becomes a more dominant weather system, occasional to frequent rains and thunderstorms are expected, particularly over the western sections of the country. This may lead to the possible onset of the rainy season in the coming days.
However, there may be rain breaks that last a few days or weeks, known as monsoon breaks.
PAGASA will continue to monitor the weather and climate situation in the country. The public and all concerned agencies are advised to take precautionary measures against the adverse impacts of Habagat and other climate and weather events.
For more information, you may reach us via phone at (02) 8284-0800 local 4801 (Weather Forecasting Section) and 4920 or 4921 (Climate Monitoring and Prediction Section) or email at information@pagasa.dost.gov.ph.
Original Signed:
Original Signed:
NATHANIEL T. SERVANDO, Ph.D.
Administrator
