Ma-on weakened back to a tropical depression and due to unfavorable conditions it dissipated on August 26, 2022.

A disturbance that would eventually become Severe Tropical Storm Ma-on was first noted by the Joint Typhoon Warning Center (JTWC) on August 18, while it was located about 910 km (565 mi) southeast of Taipei, Taiwan.

[3] During August 19, the Japan Meteorological Agency began tracking a low pressure in the Philippine Sea.

[5] The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) began tracking the system, giving the local name Florita on August 21.

[6] On the same day, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) for the system.

[11][12] Ma-on began to moved slowly, under the influence of a subtropical ridge off the coast of Luzon.

[22] Upper-Level near the storm's center struggled to organize due to moderate to strong east-northeasterly shear.

[24] Ma-on moved west-northwest and subsequently made second landfall just southwest of Yangjiang, China on August 25.

[27] Ma-on moved west to the Gulf of Tonkin, and made third and final landfall in Móng Cái City, Quảng Ninh Province in Vietnam on 13:00 UTC.

[28] After that, JMA declared that Ma-on weakened to a tropical depression, until it was last noted in Northern Vietnam on August 26.

[29][30] Ahead of the storm's arrival, PAGASA placed the provinces of Aurora, Isabela and Cagayan under Tropical Cyclone Wind Signal (TCWS) #1 on August 21, 2022.

[15] President Bongbong Marcos suspended classes and government work in some areas in Luzon on August 23 and 24 just one day after the opening of full face-to-face classes, two years since the COVID-19 pandemic in the Philippines prompted schools to shift to distance or online learning.

[34] In Isabela, heavy rains brought by the storm caused four overflow bridges to be impassable.