THAILAND WEATHER PLANNER
Choose the right weather for your trip.
Compare Thailand’s regions by month, understand the seasons and check a short-range forecast before you travel.
Regional guidanceSources shownForecasts clearly labelled
NorthCooler in winterCentralWarm year-roundAndamanWest-coast cycleGulf coastLater rains
PLAN BY MONTH
Typical conditions—not a forecastThailand in December
Typical seasonal patterns can differ sharply by region. Use this overview for planning, then check a forecast close to departure.
Northern Thailand
Typically drier
- Cooler mountain mornings
- Lower humidity in the cooler season
- Nature, culture and trekking
Central Thailand
Typically drier
- Warm to hot year-round
- Humidity builds before the rains
- Cities, food and heritage
Northeastern Thailand
Typically drier
- Cooler from November to February
- Drier winter air
- History and local culture
Andaman coast
Typically drier
- Warm tropical coast
- Humid with seasonal showers
- Islands, beaches and diving
Gulf coast
Typically wetter
- Warm tropical coast
- Rain pattern differs from the west coast
- Island stays and beaches
Typical pattern across Thailand
Relative seasonal pattern only; amounts vary by location and year.
RainfallHeatVisitor demand
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Compare coasts before choosing an island
Thailand’s two main island coasts have different seasonal patterns.
WEST COAST
Andaman Sea
Conditions are typically drier from around December to April. The wetter southwest-monsoon period often brings rougher seas and disrupted boat plans.
Explore the Andaman coastEAST COAST
Gulf of Thailand
The Gulf often has useful beach periods when the Andaman side is wetter, while heavier Gulf rain is more common later in the year.
Explore the Gulf coastSHORT-RANGE DATA
Check the live forecast
Live weather helps with plans close to departure; confidence decreases further ahead.
Forecast data provided by Open-Meteo. Thailand Navigator does not issue weather alerts.
Understand Thailand’s seasons
Regional timing varies—the Andaman and Gulf coasts do not follow the same pattern.
Hot season
Roughly March–MayGenerally hot across much of Thailand, with the highest heat stress often building before widespread rains.
Rainy season
Timing varies by regionShowers are often intense and short-lived, but prolonged rain and rough seas can affect plans.
Cooler season
Roughly November–FebruaryOften the most comfortable period inland, especially in northern and central Thailand.
Weather that affects your plans
Look beyond the temperature when deciding where and when to travel.
Air quality
Conditions can deteriorate in parts of northern Thailand during the hot, dry season. Check current local readings.
Air-quality guidanceRough seas & ferry disruption
Wind and swell can affect ferries, small boats and island crossings during wetter periods.
Ferry travel guidanceHeat & UV
Heat and strong UV can affect sightseeing and outdoor activities throughout the year.
Heat-safety tipsFlooding & heavy rain
Localised flooding can affect roads and travel plans. Follow official updates during severe weather.
Official weather informationHow to read this informationForecast means short-range live weather. Typical means a broad historical seasonal pattern, not a prediction.
Sources and limitsLive forecasts: Open-Meteo. Official warnings: Thai Meteorological Department. Conditions vary locally.
View official weather source Thailand weather questions
What is the best time to visit Thailand?
There is no single best month for every region. Inland areas and the two southern coasts follow different seasonal patterns, so match your dates to the places you plan to visit.
Which coast is usually drier in December?
Use the regional cards above as a broad guide, then check local forecasts and sea conditions nearer your trip.
Will it rain every day in the rainy season?
Not necessarily. Rain can be brief and localised, although multi-day events do occur and can affect transport.
How reliable are long-range forecasts?
Specific daily forecasts become less reliable further ahead. Use seasonal patterns for trip timing and short-range forecasts for day-to-day choices.
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