Maysak, which began as a Super Typhoon in the Pacific Ocean, reached the northeast coast of the main island of Luzon at 0530 IST with winds of 55 kilometres an hour, chief state weather forecaster Esperanza Cayanan said.
"As of now, most of our fears have melted away," she told a news conference shortly after the depression reached Dinapigue, a remote town on Luzon's northeast coast, about 250 kilometres from Manila.
The tourists, many of whom had come from Manila and nearby areas to enjoy the long Easter holidays in the mainly Catholic nation, breathed a sigh of relief and dived back into the still choppy waters on Easter Sunday.
"We made a calculated risk (that Maysak would dissipate) and we got lucky. Prayers also helped," Manila-based television producer Rona Agtay, 39, told AFP as she hit the surf.
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At its current strength, Maysak can break tree branches and may take the roofs off houses made of light materials, while sea travel remains risky for small boats, the state weather service said in its latest bulletin.
"We expect this system to melt away as it crosses the mountains, although there is a small possibility it could survive by the time it hits the water (South China Sea) tomorrow," she added.
More than 500 boats were also ordered to remain at port in the region, while 10 domestic flights suspended. The authorities were expected to lift the restrictions today.
"We had not received any reports of casualties," Pama added.