Guylee Simmonds, from Hope Health Action, a Christian charity which helped build a mission hospital in Haiti told Premier about what he's expecting.
"We're preparing for the worst and hoping for the best", he said.
"We're still under hurricane watch and it looks likely we'll have substantial rain, storm surges and wind speeds that could be pretty severe".
When asked what the general mood is like in Haiti he replied: "The problem is getting people aware and taking the hurricane risk seriously.
"People don't have the same access to internet and news and so many haven't see the destruction further down the Caribbean. Getting people to take that seriously is a real challenge".
Hurricane Irma has already caused destruction to buildings across the Caribbean, wiping out electricity and killing 10 people. The French territories of Saint Martin and Saint Barthelmey are badly affected as well as Barbuda.
Haiti has already suffered from pervious disasters and had a close shave with Hurricane Matthew which devastated the southern Haiti.
Simmonds said: "Haiti is best known for a lot of the worst natural catastrophes. It looks like this will be another damaging and challenging situation for a country that already has lots of challenges".
Hope Health Action will continue to stay in operation no matter what happens.
Simmonds said: "[We] have been working in Haiti for ten years; we have one of the leading hospitals in the north of Haiti with about 260 staff and over 110 beds. We also have a fairly good track record of responding to these natural disasters.
"We were involved in the response to the 2010 earthquake, the major cholera epidemic and the recent hurricane."
Simmonds said the hospital is having challenges of getting enough supplies in.
"Unlike businesses and schools we can't close down, we still have a lot of in-patient care going on so [we're] moving patients away from windows, boarding up windows and making sure supplies are all in place if the hospital does get cut off and transport becomes very difficult," he added.
Simmonds asked people to pray that the response is from worldwide community can mitigate the negative impact of the storm.