Phuket's Rainy Season Month by Month: What It Is Really Like, and What You Save

Phuket's rainy season runs from May to October, with September and October the wettest months, and it is nothing like the washout people fear. A typical green-season day on the north-west coast is a sunny morning, a heavy shower of one to two hours in the afternoon, and a clear evening. The real difference is the sea: the west coast gets swell and red flags on rough days, so beach swimming needs judgement while your villa pool does not. November is the change-over month, and from December to April the weather is close to guaranteed.

The table below is what to expect month by month, followed by what it actually means for a villa holiday and what you pay.

Phuket weather by month

Long-term averages for Phuket. "Rain days" counts any day with measurable rain, including a 20-minute shower.

Month	Daytime high	Rain (mm)	Rain days	Sea	Our verdict
January	33 °C	35	4	Flat, clear	Peak. Book early.
February	34 °C	40	3	Flat, clear	The driest month.
March	34 °C	75	6	Flat, warm	Hot and dry; great value late month.
April	34 °C	125	15	Calm, hottest water	Hottest month; Songkran on the 13th.
May	33 °C	295	19	Swell begins	Green season starts, rates drop.
June	32 °C	265	19	Swell, red flags on rough days	Sunny mornings, short storms.
July	32 °C	215	17	Swell	Often drier than May or June.
August	32 °C	245	17	Swell	European summer; villas are the smart choice.
September	31 °C	325	19	Rough at times	Wettest month, lowest rates.
October	32 °C	315	19	Improving late month	Wet first half, clearing after the 20th.
November	32 °C	195	14	Calming	First half showery, second half opens up.
December	32 °C	80	8	Flat by mid-month	High season returns; Christmas is peak.

Rainfall figures are long-term monthly averages; individual years vary by a good margin either way.

What "rain" means here

Tropical rain in Phuket is intense and short. Three hundred millimetres in September sounds like a month underwater; in practice it is two or three downpours a week that last an hour or two, usually between two and six in the afternoon or overnight, with the rest of the time warm and often sunny. A whole grey day happens perhaps four or five times a month at the peak, and a run of three grey days is rare outside September and October.

Temperatures barely move all year, which is why the table shows 31 to 34 degrees in every month. The humidity in the green season is higher, which is the strongest argument for a private pool over a hotel: you are never more than ten steps from cooling down.

The sea is the real story

From May to October the south-west monsoon pushes swell onto Phuket's west coast. On rough days the lifeguards fly red flags at Surin, Bang Tao, Karon and Kata, and you should take them literally; rip currents are the island's main hazard, not rain. On calm days the same beaches are perfectly swimmable. Two places stay gentler: Nai Yang, where a reef breaks the swell, and the north end of Bang Tao at Layan, which is sheltered compared with the middle of the bay. Boat trips to Phi Phi and Phang Nga Bay run all year, but the Similan Islands close from mid-May to mid-October, so if the Similans are on your list, come in the dry season.

What to do on a wet afternoon

Most of what makes Phuket good is unaffected by a shower: a Thai cooking class, a spa afternoon at Boat Avenue or Laguna, Phuket Old Town's cafés and shophouses, the Sunday walking street, Blue Tree water park in Cherng Talay, the elephant sanctuaries, dinner at Boat Avenue. The green season is also when the island is quietest: no queues at the airport, tables at Catch without a booking, empty roads. Our concierge team keeps a list of rain-proof plans for exactly this reason; ask them on WhatsApp when the cloud comes in. Our markets, tours and activities guide has the full list.

What you save

Villa rates in Phuket follow the weather. As a rule of thumb across the island, the same pool villa costs 30 to 40 percent less per night in June than in January, and minimum stays usually fall from seven nights over the festive weeks to two or three in the green season. Our booking engine shows live rates for any dates, so the exact difference for a given villa is one search away. Flights from Europe and Australia are cheaper in the same months. For a family that wants a private pool and does not mind planning the beach around the forecast, May, June and early July are the best value on the calendar; late August and September are the cheapest. Check the current offers and our best rate guarantee, and use code ESCAPE5 on our booking engine for a further five percent.

Month-by-month verdict

• November: come in the second half. The first two weeks can still be showery; by the end of the month the sea is flat and everything is open, at pre-Christmas prices.
• December to February: the best weather of the year and the highest prices. Christmas and New Year need booking six months ahead; see our festive season guide.
• March and April: hot, dry, cheaper after mid-March. April is the hottest month and brings Songkran on the 13th.
• May to July: the sweet spot for value. Sunny mornings, afternoon showers, calm weekdays everywhere.
• August: busy with European families despite the season label; book villas a couple of months ahead.
• September and October: the wettest weeks and the lowest rates. Fine for a pool-and-spa holiday, less good for a beach-every-day one.

Frequently asked questions

When is the rainy season in Phuket?

May to October, with September and October the wettest months. Rain usually falls in short, heavy afternoon or overnight showers rather than all day.

Is Phuket worth visiting in the rainy season?

Yes, especially from a villa. Mornings are mostly sunny, the island is quiet, and villa rates are 30 to 40 percent lower than in high season. Plan beach swims around the red flags and keep the Similan Islands for the dry season.

What is the weather like in Phuket in November?

November is the transition month: showery in the first half, clearing in the second. From about the 20th the sea calms and the dry season begins. Late November is one of the best-value weeks of the year.

What is the driest month in Phuket?

February, with around 40 millimetres of rain across three days. January and March are nearly as dry.

Can you swim in the sea in Phuket during the rainy season?

On calm days, yes. On rough days the beaches fly red flags and you should stay out; rip currents are the danger. Nai Yang, sheltered by a reef, and the Layan end of Bang Tao are the calmest options from May to October.