December weather forecast
Thailand

December is often celebrated as one of the most delightful months to explore Thailand. The culmination of the dry season's onset, this month offers consistently pleasant weather, making it particularly alluring for tourists and locals alike.

In Northern Thailand, areas adjacent to Myanmar and Laos revel in their coolest phase. Morning fogs are common, rendering mystical vistas in the hilly terrains. Temperatures can occasionally dip to a refreshing 18°C (64.4°F) during the early hours, rising to 27°C (80.6°F) as the day progresses. The cool atmosphere, paired with the lush post-monsoon greenery, makes this region exceptionally picturesque during December.

Bangkok enjoys a comfortable climate, devoid of the extreme heat that characterizes its summers. With temperatures oscillating from 23°C (73.4°F) in the mornings and evenings to about 29°C (84.2°F) during the day, the capital city becomes an inviting hub for various festivities, especially as it gears up for end-of-year celebrations.

The western coastline, encompassing tourist magnets such as Phuket and Krabi, is in full swing for the holiday season. The northeast monsoon ensures minimal rainfall, leading to serene seas and clear skies. Beachgoers and marine enthusiasts can expect temperatures ranging between 26°C (78.8°F) and 32°C (89.6°F), accompanied by vibrant underwater visibility for diving and snorkeling.

---

• Bangkok - December »
  December is the coldest month exhibiting average temperatures of 31.7°C (89.1°F) at the peak and 22°C (71.6°F) at the base. The month with the least rainfall in Bangkok is December, when the rain falls for 1 days and typically collects 6mm (0.24") of precipitation.
• Chiang Mai - December »
  December proves to be the coldest month in Chiang Mai, recording an average maximum temperature of 28.6°C (83.5°F) and a minimum temperature of 15.7°C (60.3°F). With an average of 11h and 0min of daylight, December has the shortest days of the year in Chiang Mai, Thailand.
• Pattaya - December »
  The month with the least rainfall in Pattaya is December, when the rain falls for 1 days and typically collects 8mm (0.31") of precipitation. With an average relative humidity of 70%, December is the least humid month in Pattaya, Thailand.
• Phuket - December »
  January, February and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Phuket. In Phuket in December, during 8 rainfall days, 72mm (2.83") of precipitation is typically accumulated.
• Nakhon Ratchasima - December »
  The month with the least rainfall in Nakhon Ratchasima is December, when the rain falls for 1 days and typically collects 3mm (0.12") of precipitation. The month with the least rainfall in Nakhon Ratchasima, Thailand, is December, when the rain falls for 1 days and typically collects 3mm (0.12") of precipitation.
• Udon Thani - December »
  The month with the shortest days in Udon Thani, Thailand, is December, with an average of 11h and 6min of daylight. To sum it up, December in Udon Thani features cool temperatures, marginal rainfall, and beautiful sunny days, culminating in a pleasant end to the year.
• Hua Hin - December »
  With an average relative humidity of 67%, December is the least humid month in Hua Hin, Thailand. December is the least humid month in Hua Hin, Thailand, with an average relative humidity of 67%.
• Krabi - December »
  The month with the shortest days in Krabi, Thailand, is December, with an average of 11h and 42min of daylight. The month with the shortest days in Krabi is December, with an average of 11h and 42min of daylight.
• Hat Yai - December »
  The average heat index, which takes the relative humidity and factors it into the air temperature reading, in December is evaluated at 38°C (100.4°F). The cityscape undergoes a bold transformation as it ushers in the new year under soothing temperatures and a glistening solar spectacle caused by the distinctive December sunshine.
• Surat Thani - December »
  December is the coldest month in Surat Thani exhibiting average temperatures of 29.9°C (85.8°F) at the peak and 22°C (71.6°F) at the base. January, February and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Surat Thani.
• Chiang Rai - December »
  December has the shortest days of the year in Chiang Rai with an average of 11h and 0min of daylight. December stands out as Chiang Rai's coldest month, with temperatures ranging between an average high of 27.2°C (81°F) and a low of 13.5°C (56.3°F).
• Khon Kaen - December »
  December has the shortest days of the year in Khon Kaen with an average of 11h and 12min of daylight. December, having an average high-temperature of 30.1°C (86.2°F) and an average low-temperature of 16°C (60.8°F), is the coldest month in Khon Kaen, Thailand.