Several schools have either cancelled classes on Monday or moved them online, while nearly 300 flights have been cancelled.
Fung-wong is expected to weaken after making landfall somewhere between the districts of Baler and Casiguran, but it is likely to remain a typhoon as it travels over Luzon.
Over 200mm of rain is forecast for parts of Luzon, even 100-200mm in the Metro Manilla area. This is expected to cause severe flooding and landslides.
Eastern parts of the Philippines have already begun experiencing heavy rains and winds, a weather official said on Saturday evening.
While much of the country is expected to be affected, there are particular concerns about those areas that could take a direct hit, including Catanduanes, an island in the east of the Bicol region, where extreme conditions were reported on Sunday morning.
