Here's what the tourism brochures don't tell you: many long-term expats in Phuket actually prefer the rainy season. Prices drop, crowds vanish, the island turns electric green, and the afternoon thunderstorms are genuinely spectacular. After six years here, I've watched newcomers panic about moving during May–October, then arrive to find it's perfectly liveable — often more so than peak-season Phuket.
That said, the weather here is real and it does affect daily life. Understanding the seasons properly means you can plan around them rather than be caught out by them.
Phuket Weather: Key Facts
- Two seasons: Dry (November–April) and Wet/Monsoon (May–October)
- Temperature range: 22°C (cool nights, Jan) to 36°C (hottest afternoons, April)
- Annual rainfall: ~2,200mm — most falling May–October
- Humidity: 70–85% year-round (higher during monsoon)
- Best months for new arrivals: November–February (cool, dry, manageable)
- Best months for quiet/affordable life: May–June (green season sweet spot)
- Avoid arriving: Late October (peak wet, before it tips dry)
The Two Seasons — What They Actually Mean
Phuket doesn't have four seasons. It has a dry season and a wet season, driven by two monsoons: the southwest monsoon (May–October) brings rain to the west coast, and the northeast monsoon (November–April) brings wind and some swell but largely dry weather.
The line between them isn't sharp. May sees the first real rains; November sees them wind down. If you're moving long-term, think of the year in thirds: the cool comfortable dry season (Dec–Feb), the hot build-up (Mar–Apr), and the green wet season (May–Nov).
Month-by-Month Guide
The sweet spot of the year. Cool evenings, calm seas, clear skies. Christmas and New Year brings the island's biggest crowds and prices — but the weather is genuinely glorious.
Phuket's coolest and driest month. Evenings can feel genuinely fresh (for the tropics). Seas calm everywhere. Highly recommended for newcomers settling in.
Still excellent. Slightly warming toward month-end. Seas remain calm. Chinese New Year brings brief crowd surges in Phuket Town and Old Town restaurants.
Heat begins building. Still dry and sunny, but midday is intense. Great beach weather if you're not from a hot country. Expats start spending more time indoors 11am–3pm.
Peak heat. Feels like 40°C+ with humidity. Songkran water festival mid-April brings chaos and celebration. First pre-monsoon showers appear late April. Thai New Year marks the season shift.
Monsoon arrives. West coast gets choppy. But: prices drop 30–40%, tourists thin out, the island turns impossibly green. Mornings are often glorious; afternoons bring storms.
Underrated month. Lower humidity than later monsoon months, stunning light, waterfalls flowing. Bang Tao and Surin still have some restaurants open. A favourite for expats who know.
Consistent rain patterns. European summer tourists arrive (school holidays). Still very workable for expats — most rain falls 2–5pm. Rawai and east coast remain relatively calm.
Similar to July. Heavy rain when it comes, but rarely all day. Interior trips — Khao Phra Thaew nature reserve, waterfalls at Bang Pae and Ton Sai — are spectacular this time of year.
Quietest and wettest month. Some businesses close, especially in Patong. The dedicated expat community gets closer. Good time for visa runs, home office setup, trips to Bangkok.
Still wet early month, turning drier by end. The Vegetarian Festival (usually Oct) in Phuket Town is unmissable — ceremonies, street food, processions. Seas begin settling on east coast.
The transition everyone waits for. Rain dwindles, skies clear, expats emerge. West coast beaches open up again. Season launches with boat trips, beach clubs reopening, restaurant energy lifting.
Temperature & Humidity: What It Actually Feels Like
The numbers on weather apps don't tell the full story in Phuket. Humidity is the real factor — and it sits at 75–85% year-round. In April, when the thermometer reads 35°C, the real-feel can hit 43–45°C. This matters for planning your day and your energy levels.
Most veteran expats structure their day around the heat: morning activities (6–11am), retreat indoors for the hottest part of the day, re-emerge late afternoon. Markets, dog walks, outdoor exercise — all happen before 9am or after 5pm.
| Month | Avg High (°C) | Avg Low (°C) | Feels Like (Humidity) | Rain Days |
|---|---|---|---|---|
| January | 31 | 23 | 34°C | 4 |
| February | 32 | 23 | 35°C | 3 |
| March | 33 | 24 | 37°C | 5 |
| April | 35 | 25 | 41°C | 7 |
| May | 34 | 25 | 40°C | 18 |
| June | 33 | 25 | 38°C | 17 |
| July | 32 | 25 | 37°C | 19 |
| August | 32 | 25 | 37°C | 20 |
| September | 32 | 25 | 37°C | 22 |
| October | 31 | 24 | 36°C | 19 |
| November | 31 | 24 | 35°C | 11 |
| December | 31 | 23 | 34°C | 5 |
Beach Safety: Flags Mean What They Say
The west coast beaches — Patong, Kata, Karon, Bang Tao, Surin, Kamala — face the open Andaman Sea. During the southwest monsoon (May–October), rip currents and powerful surf appear regularly. The beach flag system is enforced by lifeguards and it is not advisory — it is there because people die each year ignoring it.
- 🟢 Green flag: Safe swimming conditions
- 🟡 Yellow flag: Swim with caution, strong currents possible
- 🔴 Red flag: No swimming — dangerous conditions
- Two red flags: Beach closed, water entry prohibited
The good news: the east coast is calm year-round. Rawai Beach, Ao Chalong (the bay area), and Ao Po on the northeast coast are sheltered from the monsoon swell and are safe even when west-coast beaches are red-flagged. Rawai expat families often switch to east-coast swimming during monsoon months.
Flooding: What to Know Before You Rent
Some low-lying areas of Phuket do flood temporarily after heavy rain. The flooding is usually shallow (ankle to shin depth) and clears within a few hours as Phuket's drainage handles the volume. But it can be inconvenient and, for motorbike riders, risky.
Areas with documented flooding history include: sections of lower Patong, the flat road between Chalong and Rawai, parts of Bang Tao near the lagoon, and some stretches of the main Phuket Town–Rawai road. Properties on elevated ground — Rawai hills, Kamala hillside, Phuket Town Old Town area — rarely flood.
Before signing any lease: ask the landlord directly about flooding. If they claim the property never floods, ask neighbours. It's a fair and practical question, not an insult.
Planning Your Life Around the Seasons
After six years, here's how I think about the Phuket calendar as a resident:
| Period | What to Expect | Best For | Plan Around |
|---|---|---|---|
| Dec–Feb | Cool, dry, busy | Settling in, outdoor activities, boat trips | Higher rents, crowded beaches/restaurants |
| Mar–Apr | Hot, dry, intense | Beach before 9am, pool afternoons | Heat exhaustion — hydrate constantly |
| May–Jun | Green, rainy afternoons | Budget living, quiet island life | West coast beach closures, schedule outdoors AM |
| Jul–Aug | Consistent rain | Interior Phuket, coworking, Bangkok trips | West coast seas, some businesses close |
| Sep–Oct | Wettest, quietest | Low-season pricing, visa runs | Some restaurants/bars closed; deepest wet season |
| Nov | Season turning | Early dry season, great value | Occasional late-monsoon storms |
Practical Weather Gear for Phuket Life
- Rain jacket or umbrella: essential May–October; keeps in your bag, not your wardrobe
- Waterproof phone case: ฿150–300 at any market, protects against downpours on a scooter
- UV-protection rashguard: for beach/sea activities — SPF clothing is more effective than sunscreen in daily tropical life
- Good air-conditioning: budget ฿1,500–3,500/month on your electricity bill for comfortable sleeping
- Dehumidifier: ฿3,000–6,000; dramatically improves comfort and prevents mould in wet season
- Weather apps: Windy.com is the expat favourite for tracking storm cells and planning beach days
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