The best time to go diving in Myanmar is November until April. This is true for most liveaboards sailing the north Andaman Sea. During this period the water is very calm and displays a visibility of 82 to 92 feet (25 to 30 meters). However, plankton blooms can pop up from time to time. While these may decrease visibility, they also increase your chance of seeing manta rays, whale sharks and other megafauna. Liveaboard diving outside of November to April is rare with many of the best sites unreachable due to weather conditions. Furthermore, whale shark season in Myanmar is between February and April when these giants can be spotted cruising past the cleaning stations. This is also the perfect time to see mantas, who follow the plankton blooms.