Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Surat Thani is from January, February, March. — consistent weather climate
⛈Hot & rainy
| Score | 80 | 76 | 70 | 52 | 41 | 50 | 39 | 45 | 40 | 34 | 39 | 69 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Hot & dry | Hot & dry | Hot & dry | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy | Hot & rainy |
| Temperature | 22–30°C | 22–32°C | 23–34°C | 24–34°C | 25–33°C | 24–32°C | 24–31°C | 24–32°C | 24–30°C | 23–30°C | 23–29°C | 23–29°C |
| Feels like | 26–34°C | 26–36°C | 28–39°C | 29–40°C | 30–39°C | 29–38°C | 28–37°C | 28–37°C | 28–36°C | 28–36°C | 28–35°C | 27–33°C |
| Precipitation | 44mm 10 days | 50mm 8 days | 63mm 6 days | 134mm 12 days | 193mm 17 days | 160mm 15 days | 245mm 21 days | 202mm 18 days | 244mm 22 days | 350mm 28 days | 334mm 27 days | 161mm 20 days |
| Sunshine | 9.6h ☀︎ 82% | 10.6h ☀︎ 89% | 10.8h ☀︎ 90% | 8.7h ☀︎ 71% | 6.5h ☀︎ 52% | 6.0h ☀︎ 47% | 5.0h ☀︎ 40% | 6.2h ☀︎ 50% | 4.9h ☀︎ 40% | 4.6h ☀︎ 38% | 4.8h ☀︎ 41% | 7.2h ☀︎ 62% |
| Wind | NE · 17 km/h | E · 17 km/h | E · 17 km/h | E · 15 km/h | S · 14 km/h | SW · 15 km/h | SW · 16 km/h | SW · 15 km/h | SW · 15 km/h | SW · 13 km/h | NE · 14 km/h | NE · 17 km/h |
| Humidity (%) | 80% | 76% | 72% | 77% | 82% | 82% | 85% | 84% | 87% | 91% | 90% | 85% |
| Day length | 11.7h | 11.8h | 12.1h | 12.3h | 12.5h | 12.6h | 12.6h | 12.4h | 12.2h | 11.9h | 11.7h | 11.6h |
This Buddhist festival marking the end of the annual Buddhist Lent is Surat Thani's signature event, featuring processio…
Most travelers rush through Surat Thani purely as a transit gate to the Gulf islands, yet the calendar holds a bewildering trap: November sees the year's heaviest tourist crush right at the sodden peak of the monsoon, while January delivers brilliant, dry coastal calm.
Almost nobody sets out with Surat Thani as their final destination. Sprawled near the mouth of the Tapi River where it empties into the Gulf of Thailand, the city is southern Thailand's working engine room—a riverfront hub of coconut plantations, rubber trade, and transport terminals. Hundreds of thousands of travelers filter through its bus depots and ferry piers every year, bound for the sands of Ko Samui, the parties of Ko Pha Ngan, or the dive reefs of Ko Tao. But treating the city and its surrounding province as an interchangeable waypoint ignores the wild rhythm of southern weather. The timing of your crossing determines whether you glide over glass-smooth waters under open skies or spend half a day huddled under corrugated tin roofs waiting out a deluge.
January is the undisputed prize of the calendar. The northeast monsoon has finally retreated, leaving the sky scrubbed clean and the waters of the Gulf of Thailand remarkably settled. Days feel bright and expansive, with long stretches of sunlight and only occasional light drizzles that evaporate within minutes. The air is warm and buoyant without the oppressive thickness that characterizes the rest of the year, making a stroll along the Tapi River or an outdoor bowl of spiced southern curry a pleasure rather than an endurance test.
By February, the heat begins its steady upward climb, but conditions remain superb. Crowds swell as island-bound travelers flood south from Bangkok, filling the longtail boats and night ferries, yet the coastal weather holds firm. If your priority is smooth ferry crossings where luggage stays dry and the horizon stays visible, this brief midwinter pocket is when the entire province shows its friendliest face.
In March, the ambient heat ramps up into a heavy, unbroken bake. Surat Thani sits low in the coastal basin, and by midday the asphalt radiates enough heat that walking anywhere beyond an air-conditioned minivan feels punishing. The Gulf remains mostly calm, keeping the island ferries running on seamless schedules, but waiting on open concrete piers requires serious shade and hydration.
April pushes the thermometer to its annual ceiling. The heat indexes reach blistering territory, making afternoon errands an exercise in finding shelter. Rain begins to show its hand toward the end of the month—not yet the steady soaking of later months, but violent, sudden thunderstorms that drop out of purple afternoon skies, cool the streets down for an hour, and leave steam rising from every alleyway.
May initiates a long, sticky five-month stretch where the weather settles into a predictable tropical routine. The southwesterly winds gather moisture, bringing gray mornings, midday cloud cover, and sharp bursts of rain that blow through with little warning. Surat Thani never truly empties during these months—European summer vacationers and backpackers continue to funnel through the docks toward Ko Tao and Ko Samui—but the atmosphere in town grows drowsy under the weight of persistent humidity.
Through July and August, rain is a daily expectation, yet it rarely closes down transit for long. Showers tend to arrive in concentrated squalls, dumping heavy water over the palms and rubber groves before breaking open into muggy sunshine. You will move through your travel days damp from either the sky or your own skin, but the ferry networks remain operational, and the local markets along the river operate with unbothered efficiency.
October brings the turn of the monsoon, when the Gulf of Thailand catches the brunt of offshore storms. Rainfall surges to torrential volumes, turning roadside ditches into rushing streams and testing the drainage of the low-lying riverfront. Yet it is also the window for the Chak Phra Festival, the city's defining cultural moment. Marking the close of Buddhist Lent, the festival transforms the riverfront with processions of ornate, sculpted floats pulled through the streets by local communities, alongside fierce, rhythmic boat-pulling races churned across the Tapi River. It is an extraordinary display of southern Buddhist heritage, but you will experience it in rain boots.
Then comes November, the strangest month on the regional calendar. By every measure of comfort, the weather is miserable: downpours are relentless, skies remain overcast for days on end, and choppy seas regularly disrupt island boat departures. Yet visitor numbers peak at their highest point of the entire year. Throngs of international travelers push through the terminals regardless, caught off guard by soaked luggage and rough ferry rides because broad travel advice failed to account for the Gulf's peculiar late-season monsoon. If you must pass through in November, pack waterproof dry bags and build substantial buffer days into your schedule.
December marks the beginning of the turnaround, though the transition does not happen overnight. Early in the month, the sea can still churn and afternoon downpours remain frequent, but the suffocating moisture begins to bleed out of the air. The heavy, grey canopy gradually breaks apart to reveal long ribbons of blue sky over the estuary.
By late December, holiday crowds gather in force along the docks. Evenings bring a welcome drop in apparent temperature, with gentle breezes blowing off the water that make riverside dining comfortable again. While you may still catch an unpredictable squall, the punishing deluge of late autumn is firmly in the rearview mirror.