December is Thailand at its easiest and most expensive: dry skies on the Andaman coast, comfortable Bangkok evenings, busy beaches and hotel prices that rise sharply around Christmas and New Year.
For the full seasonal picture, read the best time to visit Thailand guide.
Read moreDecember Weather
| Place | December Outlook | Best For |
|---|---|---|
| Bangkok | Warm, drier, manageable humidity | Temples, food, shopping |
| Phuket | Excellent beach weather | Families, island tours, first-timers |
| Krabi | Excellent beach weather | Railay, Hong Islands, Phi Phi |
| Chiang Mai | Cool mornings, dry skies | Temples, markets, mountain trips |
| Koh Samui | Improving but can still be wet early | Resorts with flexible plans |
December Costs
Flights, beach hotels and island tours are all in high demand. The most expensive window is roughly 20 December to 5 January. Book refundable hotels early, and do not leave domestic flights to the last minute.
Use the Thailand budget guide to plan peak-season costs.
Read moreBest December Route
Bangkok plus Phuket or Krabi is the safest December route. Chiang Mai is excellent too if you want cooler weather and culture. Koh Samui can work, but the Andaman side is usually the safer beach bet in December.
Build December into a practical one-week route.
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