When to visit
Thailand weather guide
Thailand is warm through the year, but rainfall and sea conditions vary by region. Use seasonal guidance to plan your route, then check a current forecast before travel.
Bangkok forecast
The forecast below is supplied by Weather Atlas. Conditions and update times are controlled by the provider.
Wind: 18km/h S
Humidity: 82%
Pressure: 1010.16mbar
UV index: 5
27°C
30°C
29°C
29°C
34°C / 26°C
33°C / 25°C
32°C / 25°C
33°C / 25°C
Plan by region
Bangkok, north & Isaan
November to February is generally cooler. March to May is hotter, and the southwest monsoon brings wetter conditions later in the year.
Andaman coast
Phuket, Krabi and nearby islands generally have drier conditions from November to April. Monsoon weather can disrupt beaches and boat routes.
Gulf islands
Samui, Phangan and Tao follow a different pattern. Rain often increases from October to December, so November is not a reliable dry-season choice here.
Leave room for changing conditions
- Check local forecasts and operator updates before ferry journeys or boat trips.
- Follow beach flags and weather warnings. Do not swim when local advice says it is unsafe.
- Leave a buffer between island transfers and flights.
- Check your policy’s weather-disruption conditions rather than assuming every delay or cancellation is covered.
Seasonal guidance: Tourism Authority of Thailand. This is a general pattern, not a forecast for your travel dates.
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