The death toll from the strongest typhoon to hit the Philippines this year has risen to 108, official tallies have shown.

Efforts to deliver water and food to islands devastated by Typhoon Rai have been ramped up today.

The latest figure comes after Bohol provincial Governor Arthur Yap said the number of fatalities on the devastated island had reached 72.

That took the overall number of reported deaths to 108, according to official data.

The powerful storm has displaced more than 400,000 people, damaged homes and toppled power and communication lines.

Most deaths were due to fallen trees and drowning, officials said.

The widespread destruction has made it difficult for authorities to immediately provide a clear picture about the extent of damage, as communication and power lines have yet to be fully restored in many areas.

Rai, which at one point was a category 5 storm, made nine landfalls, with a massive trail of destruction also reported in the provinces of Cebu, Leyte, Surigao del Norte, including the popular Siargao surfing destination, and Dinagat Islands.

It uprooted trees, toppled roofs, flattened houses, destroyed infrastructure and flooded many towns, hampering efforts to send much needed food and water to victims.

The directive from President Rodrigo Duterte was to "use all government resources to ensure that all goods are delivered as soon as possible" to calamity-stricken areas, presidential spokesperson Karlo Nograles told a radio station.

About 20 tropical storms hit the Philippines every year, usually causing floods and landslides.