A bunch of rain couldn't kill Lionel Messi's vibe at his big Inter Miami introduction on Sunday -- the soccer superstar was happy as ever as he made his grand entrance with his new team.
The lavish celebration was delayed two hours due to a pestering thunderstorm ... but there was no way the thousands of fans at DRV PNK Stadium were going to miss out on seeing the Argentinian striker's first appearance with the MLS club.
Messi cracked a joke about the downpour while addressing the crowd .. saying, "Tonight, we’re doing this Miami-style in the rain. This is holy water!!"
He also got serious during his speech ... saying he's thankful for all the local fans giving him a warm welcome ever since he touched down in the States.
"Truthfully, I'm very excited, very happy to be here in Miami and be with you," Messi said. "I'm eager to start training and to compete. I come here with the same desire to compete, desire to win and help the club to continue to grow."
Messi -- who's reported to make up to $150 million overall during his time with Inter Miami -- also doubled down on his decision to venture to MLS ... saying it's going to be a positive experience for both sides.
Team owner David Beckham also took the mic to share a few words ... saying it's a "dream come true" to have Messi join the family.
The whole event was filled with fireworks, flashing lights and music ... but it's safe to say the party is just getting started.