Eight people were reported dead, with over 200,000 homeless. The southwest monsoon brought by Typhoon Maring hit Metro Manila, Cavite, some parts of Rizal and Laguna, leaving many areas flooded.
May 31 – A fatal explosion occurred at the Two Serendra condominium complex, in the Bonifacio Global City, Taguig.The Philippine Coast Guard sympathizes with the victim but refuses to apologize for the incident and insisted that its personnel are just doing its job to address illegal fishing. Tensions between Taiwan and the Philippines heat up as Taiwanese President Ma Ying-jeou, threatens to impose sanction on the Philippines following a day after the incident. May 9 – A Philippine Coastguard vessel open fired a Taiwanese fishing vessel, allegedly inside Philippine maritime territory, leaving one Taiwanese fisherman dead.Ash clouds reached 500 meters above the volcano's summit, which drifted west southwest The event killed five climbers, of whom three were Germans, one was a Spaniard living in Germany and one was a Filipino tour guide while Seven others were reported injured. Ash and rock were produced during this eruption. May 7 – Mayon Volcano produced a surprise phreatic eruption lasting 73 seconds.