March is arguably the sweet spot of the Phuket calendar. The dry season remains firmly in place — sea conditions are still excellent, rain is rare, and the Similan Islands are open until the end of the month. Yet European school holidays have ended, Chinese New Year crowds have departed, and accommodation prices have softened from their January–February peak. The island is busy but noticeably more comfortable than the peak months.
26–34°C (79–93°F)
Air temp
29°C (84°F)
Sea temp
Very Low
Rainfall
High
Crowds
why go
what's on
Similan Islands Final Season Weeks
Throughout MarchThe Similan Islands National Park typically closes on 15 April. March offers some of the final opportunities to visit with peak-season calm seas and visibility. Book Similan day trips well in advance for March visits.
Songkran Approach
Mid-April's Songkran (Thai New Year water festival) is the largest public holiday in Thailand. Hotels start filling for the Songkran period in late March — if your visit extends into mid-April, accommodation should be booked early.
travel tips
March is the last full month for Similan Islands day trips at peak conditions. If diving or snorkelling at the Similans is on your list, prioritise a March visit over April.
Accommodation rates drop meaningfully compared to January and February — same quality of weather for less money. Mid-week bookings are noticeably cheaper than weekends.
Sea temperatures peak in March and April at 29–30°C — the water is at its warmest, which is particularly pleasant for extended snorkelling sessions.
common questions
March is one of the best months to visit Phuket — excellent weather, calm seas, good snorkelling, and fewer crowds and lower prices than the January–February peak. It's the smart traveller's dry season choice. The only notable time pressure is that the Similan Islands close on 15 April, so March is your last chance for the full park experience.
March weather in Phuket is excellent. Temperatures range from 26–34°C, with low humidity and very rare rainfall. Sea conditions are calm with good to excellent snorkelling visibility. It's one of the most reliably pleasant months on the island.
Yes — the Similan Islands National Park is open from November through mid-April. March falls firmly within the open season and sea conditions are still at their calmest. Day trip boats run regularly from Thap Lamu Pier. Book at least 2–3 days ahead.
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