Six years in Phuket and I still get asked the same question every week: "What's the weather actually like?" Not the tourist brochure version — the real story. Because Phuket weather is genuinely different to Thailand's east coast, different even between Phuket's west and east sides, and it matters enormously for planning your move.
Here's everything I've learned living through six full cycles of Phuket's seasons — including the months they don't put on postcards.
📊 Phuket Climate at a Glance
- Year-round temperature range: 25°C–35°C (feels like 28°C–40°C with humidity)
- Dry season: November–April (peak: December–February)
- Wet season: May–October (peak rain: September–October)
- Annual rainfall: ~2,200mm (mostly May–October)
- Hottest month: April (up to 36°C with humidity)
- Least rainy month: February (avg 20mm rainfall)
- Monsoon type: Southwest monsoon — affects west coast more than east
The Full Month-by-Month Breakdown
| Month | Season | Avg Temp | Rain (mm) | Humidity | Expat Experience |
|---|---|---|---|---|---|
| January | Dry ☀️ | 27°C | ~25mm | 74% | Cool, breezy, busy. Peak tourist season. Beaches perfect. |
| February | Dry ☀️ | 27°C | ~20mm | 73% | Best month of the year. Lowest humidity, bluest skies. |
| March | Dry ☀️ | 29°C | ~35mm | 74% | Still lovely. Starting to warm up. Light crowds. |
| April | Shoulder 🌤 | 31°C | ~65mm | 76% | Hottest month. Songkran crowds (mid-April). Feels intense. |
| May | Wet 🌧 | 30°C | ~210mm | 80% | Monsoon arrives. West beaches get rough. Rents drop 20–30%. |
| June | Wet 🌧 | 29°C | ~215mm | 82% | Heavy daily showers, often evening. Still sunny stretches. |
| July | Wet 🌧 | 29°C | ~195mm | 82% | Busy with European tourists. Rain intense but usually brief. |
| August | Wet 🌧 | 29°C | ~210mm | 83% | Lush and green. Waterfalls flowing. Fewer tourists. |
| September | Wet 🌧 | 28°C | ~260mm | 84% | Wettest stretch. Flooding possible in low-lying areas. |
| October | Wet 🌧 | 28°C | ~280mm | 85% | Wettest month. Some expats go on holiday. Great deals everywhere. |
| November | Shoulder 🌤 | 28°C | ~90mm | 79% | Drying out fast. Vegetarian Festival. Expat community returns. |
| December | Dry ☀️ | 27°C | ~40mm | 75% | Beautiful. Christmas season. Beaches packed. Rents peak. |
Month-by-Month: The Expat Insider View
January & February: As Good as It Gets
These are the months Phuket was made for. Clear skies, temperatures in the mid-to-high 20s, a cooling northeast breeze along Rawai seafront, and zero chance of rain ruining your afternoon. February in particular is Phuket at its absolute finest — low humidity (for the tropics), crisp visibility, seas so clear you can see the seabed from a boat. If you're visiting to decide whether to move, come in February.
Insider tip: Rents peak in January–February. If your lease renews in high season, you may face a 10–15% hike. Negotiate your renewal in June–August when landlords are hungry.
March: Lovely but Warming
Still dry season, still beautiful. The mercury is climbing toward 30°C and by late March you're starting to feel the humidity build. Beaches remain packed on weekends. This is a favourite month for expat families before European school holidays drive prices up for summer. Naiharn and Rawai beaches are stunning — calm clear waters, white sand, and maybe 20% fewer tourists than peak January.
April: Hottest Month — and Songkran
April is when the heat really bites. Temperatures can touch 36°C with heat index, and humidity hovers around 76%. The good news is the famous Songkran water festival (13–15 April) provides welcome relief — three days of city-wide water fights that are absolutely wild in Patong and genuinely joyful on Phuket Town's Thalang Road. Many expats use April as a cue to escape to cooler destinations — Chiang Mai, Japan, or Europe — for two to three weeks.
May: Monsoon Arrives — and Expat Life Actually Improves
The southwest monsoon hits the west coast of Phuket first — usually mid-May. Kata Noi, Kamala, Bang Tao, and Surin beaches get the brunt of it. The seas turn rough, red flags go up, and the first serious downpours roll in. Here's what most guidebooks don't tell you: most expats genuinely prefer May onwards. Rents drop 20–30%, restaurants are quiet, road traffic halves, and the landscape turns impossibly green. A typical May shower: 90 minutes of biblical rain at 4pm, clear skies by 6pm.
June, July & August: Green Season Living
Phuket's "green season" (the local term is more polite than "monsoon"). The pattern is predictable once you learn it — sunny mornings, building clouds by afternoon, hard rain for 1–3 hours, then clear again. Humidity is at its highest (80–83%) but the rain keeps temperatures cooler than April. July surprises many new arrivals: it's actually a busy month for European family tourists, so despite the rain the west beaches still fill up on dry mornings. East-coast areas — Chalong, Phuket Town, Rawai — are noticeably drier throughout the wet season.
September & October: The Real Wet Season
Honest answer: September and October are rough. Rainfall peaks at 260–280mm per month. You can have three or four consecutive overcast rainy days. Some low-lying areas near Chalong or Bang Tao flood if there's a particularly heavy 24-hour dump (I've had water over my shoes twice in six years). Many expats use October as their "go home and visit family" month — everything is at its cheapest, tourist attractions close early, some west-coast restaurants shut entirely.
Don't overlook flooding risk: If you're renting in areas with poor drainage — parts of Bang Tao, low-lying Chalong, or near Kathu — ask your landlord specifically about flooding history before signing. Rawai Nai Harn sits higher and is generally safer.
November: The Island Wakes Up Again
November is the pivot. By mid-November the skies clear noticeably, the seas settle, and the whole expat community seems to materialise from nowhere. The Vegetarian Festival (Nine Emperor Gods) usually falls in October–November and marks a cultural turning point — the island collectively exhales and gets ready for peak season. Rents start rising from mid-November as landlords scent peak-season demand.
December: Best of All Worlds
December is wonderful — reliable sun, manageable heat (27°C average), and a festive atmosphere that's surprisingly pronounced in Patong (Christmas lights, live music on Bangla Road, beach bars full of well-heeled visitors). The downside: everything costs more. Short-stay rentals in Surin and Bang Tao hit 40,000–80,000 THB/month. Even longer-term tenants feel Christmas pricing creep in.
West Coast vs East Coast: Why Location Matters
This is the single most overlooked aspect of Phuket weather. The island lies roughly north-south, and the southwest monsoon hits the west coast — Patong, Kamala, Bang Tao, Surin, Naiharn — much harder than the east coast. Areas like Chalong, Phuket Town, and the east side of Rawai are significantly more sheltered. In a wet-season week where Bang Tao beach is under a red flag with 2m swells, Chalong Bay can be glassy calm.
If you plan to sail, kayak, or need reliable access to Phi Phi Islands during wet season, living on the east coast near Chalong pier is a genuine practical advantage — not just a preference.
Best Time to Move to Phuket
My recommendation: arrive between October and December. Here's the logic. October has the lowest rents of the year — landlords are often willing to negotiate multi-year leases at green-season rates. You get 2–3 weeks of wet weather to learn the island, find your area, and settle in — then dry season arrives and you experience Phuket at its best just as you're getting comfortable. Arriving in January means high rents, tourist crowds, and no runway to explore before everything peaks.
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- Umbrella or rain jacket: Essential May–October. A small fold-up umbrella lives in my bag year-round.
- Light layers: For air-conditioned restaurants, cinemas (Cineplex Phuket Town is notoriously cold), and BTS if visiting Bangkok.
- Quality sunscreen: UV index is high year-round — even in November. Tops 12 (extreme) in April.
- Motorbike rain gear: If you ride a scooter (and you will), a decent poncho is your most important purchase. Available at Big C Extra Chalong for under ฿200.
- Dehumidifier: Strongly recommended for any property near the beach or with less-than-perfect aircon. Helps enormously with mould in wet season.