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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Showbiz UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
December is one of the best times to visit Thailand, offering dry, sunny conditions across most of the country. With low humidity and cooler evenings, you can expect comfortable travel weather, especially in Bangkok and Phuket, though the far south may see brief showers.
What is the typical weather like in Thailand during December?
December marks the peak of the cool and dry season for northern and central Thailand, including Bangkok. Daytime temperatures hover pleasantly in the upper 20s to low 30s °C, with low humidity and clear skies. In Phuket and the Andaman coast, the southwest monsoon has largely retreated, giving way to calm seas and sunny days. The Gulf coast, including Koh Samui, enjoys its driest period of the year. Nights and mornings can feel noticeably cooler, particularly in the north around Chiang Mai, so a light jacket is useful.
Where should I go in Thailand for the best December weather?
Bangkok, Chiang Mai, and the islands of Phuket and Koh Samui all offer reliable sunshine. The Andaman coast (Phuket, Krabi, Khao Lak) sees average highs of 31°C with low rainfall, while the Gulf islands (Koh Samui, Koh Phangan) are at their sunniest. Northern Thailand is cooler and very dry, ideal for exploring temples or hiking. The weather in Thailand during December is broadly favourable, but the far south (near the Malaysian border) can still experience tropical showers.
Is December a good month to visit Phuket?
Yes, December offers Phuket’s best weather: sunny days, low humidity, and calm seas. Average highs reach 31°C, and rainfall is minimal. It is the peak tourist season, so book accommodation early.
How does December weather compare to January in Thailand?
December and January are very similar—both are dry and cool. January is slightly cooler in the north, with crisp mornings, while December often has marginally higher humidity as the monsoon finishes. Both months are excellent for travel.
Does it rain much in Bangkok during December?
No. Bangkok in December is very dry, with an average of just one or two rainy days. You can expect long stretches of blue sky, making it ideal for sightseeing. The live forecast above will show any brief passing showers.
For more travel planning, check our UK weather hub or compare conditions with Dubai Weather if you are considering an alternative winter destination. Those looking at Thailand weather in December winter should note it is the coolest and most comfortable season in the north, while Thailand weather December Bangkok is reliably warm and dry. Travellers comparing Thailand weather December Phuket often find it the sunniest month on that coast. For those curious about Thailand weather December fahrenheit, daytime highs typically sit in the upper 80s °F. If you are weighing options, see our Barcelona Weather for a European alternative, or check 10 Day Weather Forecast UK for your departure conditions.