The biggest misconception about Phuket weather is that the monsoon season makes the island miserable. As a resident, I'd push back on that completely. Low season (May–October) has its own character: emptier beaches, half the traffic, cheaper restaurants, and the most vivid greens you'll ever see on a tropical island. It rains — sometimes hard — but rarely all day.
What is accurate: the hot season (March–April) is genuinely brutal. Walking to a café at midday in late March is a survival activity. And December–January is genuinely perfect.
Phuket Weather — Key Facts for Residents
- Temperature year-round: 26–36°C (rarely below 25°C even at night)
- Dry season: November–April (best: December–February)
- Hot season: March–May (peak heat: March–April, up to 36°C)
- Monsoon / wet season: May–October (worst: September–October)
- Average annual rainfall: ~2,200mm (London gets ~600mm per year)
- Sea temperature: 28–30°C year-round
- Typhoon risk: low — Phuket is mostly sheltered from direct cyclone tracks
- Humidity: 70–80% in dry season, 80–90% in wet season
Two Seasons — The Real Story
The classic "Phuket" image — blue sky, calm Andaman Sea, clear visibility offshore. Tourist high season. Accommodation and restaurants are busiest and most expensive.
- Best beach swimming
- Similan and Surin Islands open
- Calmer seas for day trips
- Higher prices, more crowds
- March–April: extreme heat
- Peak: December–February
Southwest monsoon brings rain, often heavy. Seas on the west coast get rough. But mornings are often fine, rains are typically afternoon/evening, and the island is gloriously quiet.
- 30–50% cheaper accommodation
- Fewer tourists, less traffic
- Similan/Surin Islands closed
- West coast beaches rough
- East coast (Rawai, Chalong) calmer
- Worst: September–October
Month-by-Month Weather Breakdown
| Month | Temp (°C) | Rainfall (mm) | Sea | Expat Verdict |
|---|---|---|---|---|
| November | 27–33 | ~160mm | Calm, clearing | Excellent — high season starts, great weather |
| December | 26–32 | ~60mm | Calm, clear | Peak season — best all-round weather |
| January | 26–32 | ~40mm | Calm, clear | Best month — clear skies, comfortable heat |
| February | 26–33 | ~50mm | Calm | Excellent — warming up, still comfortable |
| March | 27–35 | ~60mm | Calm | Good — but getting hot; midday brutal |
| April | 28–36 | ~80mm | Mostly calm | Hot season peak — Songkran (April 12–14) is fun |
| May | 27–34 | ~190mm | Choppy | Monsoon starts — but still many sunny days |
| June | 26–33 | ~210mm | Rough west coast | Quieter island — good for residents, some rain |
| July | 26–33 | ~200mm | Rough west coast | Typical low season — mornings often fine |
| August | 26–33 | ~210mm | Rough west coast | Quiet, green, affordable — residents' favourite |
| September | 26–32 | ~350mm | Rough, flooding risk | Wettest month — Chalong/Rawai flooding possible |
| October | 26–32 | ~300mm | Rough | Vegetarian Festival! Still rainy, improving late month |
The Hot Season (March–May) — What to Expect
March through May is the Thai hot season, and Phuket is at the extreme end of uncomfortable. Daytime temperatures regularly hit 34–36°C. Combined with 75–85% humidity, it feels closer to 40°C in direct sun. Here's how long-term residents manage:
- Exercise before 8am or after 5pm. The Nai Harn Lake run group meets at 5:30am for exactly this reason. Midday exercise in March is medically inadvisable.
- Flip-flops over shoes everywhere possible. Shoes feel oppressive in April heat.
- Sleep with AC at 26°C. The instinct is to go colder — don't. 26°C with a fan is more comfortable than 22°C, and your electricity bill will be significantly lower.
- Beach mornings, not afternoons. From March onwards, 7–10am is the beach time. By 11am the sand is too hot to walk on.
- Embrace cold water everything. Cold showers, iced coffee, cold mineral water at every meal. It helps.
Low Season Advantages — Why Some Residents Prefer It
Several long-term Phuket residents I know genuinely prefer the low season. The reasons are more compelling than you'd expect:
- Price drops significantly: Villa rentals 30–40% cheaper in off-season negotiating, restaurants have lunch specials, even some health services run promotions.
- Traffic is lighter: The main artery from Chalong to Phuket Town (Chao Fa West) is noticeably faster. Parking at Big C is possible.
- The island is greener: After months of dry heat, the May–August rains transform the interior. The jungle routes around Khao Phra Thaeo are spectacular.
- The community is more authentic: Fewer tourists means the people you meet at local restaurants and markets are more likely to be residents, not package tourists.
- West coast waves for surfing: Kata and Kalim Beach get rideable waves during monsoon season. If you surf, this is your season.
Area-by-Area Weather Differences
Phuket's weather varies slightly by location — something residents figure out but tourists miss:
West coast beaches (Patong, Kata, Karon, Kamala, Bang Tao, Surin): Take the full brunt of the southwest monsoon. Seas are rough from May–October. These beaches are not swimmable safely during this period. During dry season, these are the best beaches on the island.
East coast and inland (Rawai, Chalong, Phuket Town, Cherng Talay): More sheltered from the monsoon. Sea on the east side (towards Chalong Bay) is calmer during wet season. Flooding risk is area-specific — know your soi.
North (Thalang, Mai Khao): Airport area is reliably slightly cooler due to elevation and more vegetation. Less developed, more breeze from the north during November–January.
Planning a Move to Phuket?
Weather is one factor. Our relocation guide covers housing, visas, healthcare, banking and everything else — month by month for the first year.
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