The trio handed out food and posed for photos as people approached them. One man yelled, "Make America Great Again!" Another told Mr Trump that he "married well".
"We are there for you 100%", Mr Trump said before donning gloves and helping to hand out sandwiches to local residents.
Trump is touring the storm damage in Florida, where many remain swamped and without electricity.
- 2.69 million homes and businesses, about 1 in 4 Florida customers, including 81 nursing homes, were without power.
Trump seems to be backpedaling on comments Wednesday, when he suggested rates could go higher for rich people.
In another tweet, Trump said he is fascinated to watch people writing books and major articles about him despite not knowing about him.
He didn't say that Thursday, and he emphasized that wealthy Americans are not his priority.More news: United Kingdom authorities seize mafia boss Dawood Ibrahim's assets worth INR42,000 crore
Almost all of the state was engulfed by the massive Hurricane Irma.
So I suppose they both know the size of each other's hands now? In Florida, where Democratic Senator Bill Nelson is running for re-election next year, Trump has already encouraged Scott to challenge the incumbent. "So I hope he runs for the Senate", Trump said. "So I hope he runs for the Senate".
President Trump is headed to Naples, Florida, on Thursday to meet with Hurricane Irma first responders.
Mr Trump, Melania Trump, Florida Governor Rick Scott and his wife Ann Scott tour a neighbourhood affected by Hurricane Irma, in Naples, Florida.
US President Donald Trump talks to the media about Hurricane Irma next to first lady Melania Trump on the South Lawn the White House upon their return to Washington from Camp David, September 10, 2017.
Last week, Trump cut a deal with Democrats in Congress to provide more than $15 billion in disaster aid for Harvey, while raising the US government's borrowing limit and funding the government through December 8.
Hurricane Irma is history but its aftermath remains deadly. In recent weeks, he's traveled to Texas and Louisiana to meet with victims and first responders after Hurricane Harvey.