When to go
Koh Lipe has become a year-round tourism destination. Ferries run to the island all year, and the larger shops, restaurants and bars all offer year-round service. Low Season- May to November: It's worth considering Koh Lipe off season, if you're on a budget- some great accommodations can be had at top resorts for slashed prices in the off-season. The divers say some of the clearest water happens during monsoon season.
High Season: the start of December until the end of February is considered peak season on Koh Lipe. Most resorts on the island are full on most nights, and if you arrive without a reservation it will be hard to find a room you like.
Popular places are booked months in advance for Christmas and New Year, during Thai holidays and long weekends, and during the weeks before and after.