May flips the monsoon switch: showers become regular but typically last an hour or two, often at night. West-coast beaches start seeing waves and red flags; sheltered bays and pools take over swimming duty. Rates fall 40–50% versus high season — the value play for flexible travellers. Similan parks close mid-month.
FAQ
How warm is the sea in May?
Around 29°C — comfortable for long swims. On the west coast watch the flags: waves and rip currents are possible; sheltered southeast bays stay calmer.
How rainy is Phuket in May?
Roughly 17 days with rain. Tropical rain is intense but short, typically an hour or two, often at night; full washout days are uncommon.
Is May a good month to visit?
Green season opens: short storms, half-price stays, west-coast waves begin.
Planning a trip in May?
Direct rentals across 16 areas with free cancellation — tell us your dates and the manager will send options within an hour.