Haiyan was one of the worst cyclones ever recorded and left more than 7,000 people dead.
Millions more lost relatives, homes or their livelihoods.
Stuart Rivers, CEO of Sailors' Society, which has helped rebuild communities in the Philippines, said: "This year, the world has seen the horrific damage caused by hurricanes Irma and Maria.
"Unfortunately, from our experience with Haiyan, we know storms like these can have a terrible effect for years to come.
"Four years after Haiyan destroyed vast areas of the Philippines, millions of people still suffer from the loss of loved ones, homes and jobs."
Sandra Welsh from the charity told Premier how communities they work with are still in need.
She said: "One of the critical needs is still rebuilding people's lives and helping them to return to what was normal for them.
"Once people have suffered traumas like this, life is never the same for them, so we're helping them to rebuild buildings, to rebuild their lives."
Sailors' Society responded to the disaster by raising £225,000 through an emergency appeal and has been helping communities in the Philippines rebuild ever since.
Rivers added: "Around a quarter of the world's seafarers come from the Philippines and the country is key to world trade. It was important that when disaster struck, Sailors' Society was able to support communities to rebuild their lives."
Sailors' Society has rebuilt 48 homes, four medical centres and three classrooms - that double as emergency shelters - since Typhoon Haiyan.
The two newest health centres opened in June and will help almost 8,000 families in Leyte and Cebu, two of the provinces worst hit by the disaster.