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Quick answer:November–April is the dry season with calmer seas. May–October is monsoon season — many day trips still run, but Similan National Park may close.
- Nov–Feb:Best visibility, busiest at Phi Phi and Maya Bay
- Mar–Apr:Hot, still calm; good for Similan and Racha
- May–Oct:Fewer tourists; check weather daily; some routes adjust
Plan your trip:boat tours,Fleet,island guides. Private charters:yachts·catamarans.
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