Southeast Thailand weather in December 2025
December
Southeast Thailand weather in December 2025
December
Day
30 °C
Night
22 °C
Sea
28 °C
Precipitation
173 mm
in month
Rainy days
13 days
in month
Daylight
11 hours
average
Sunshine
7 hours
average
Humidity
80 %
Day
30 °C
Night
22 °C
Sea
28 °C
Precipitation
173 mm
in month
Rainy days
13 days
in month
Daylight
11 hours
average
Sunshine
7 hours
average
Humidity
80 %
Overview: Southeast ThailandSoutheast Thailand is a popular destination for tourists, known for its beautiful beaches, stunning temples, and vibrant markets. Explore the island of Koh Samui, which offers a range of activities, including swimming, snorkeling, and scuba diving. Koh Phangan, located nearby, famous for its full moon parties, beautiful beaches, and lush jungles. Don't forget to taste local spicy curries, noodle dishes, and fresh seafood.
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Weather overview and FAQs
Weather overview
In Southeast Thailand in December, the average air temperature ranges from 30 °C (86 °F) during the day to 22 °C (72 °F) at night. There are 13 days of rain on average, where the rainfall is 173 mm (6.82 in).
Are there good conditions to visit in December in Southeast Thailand?
December is one of the best months to visit Southeast Thailand. The daily temperatures in this month reach pleasant 30 °C (86 °F). The seawater temperature reaches ideal 28 °C (82 °F). At night, temperatures hover around a pleasant 22 °C (72 °F).
What is the sea temperature in December in Southeast Thailand?
In Southeast Thailand in December expect the sea to be warm at 28 °C (82 °F). Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.
What temperature can I expect during the day in Southeast Thailand in December?
The average daily temperature in Southeast Thailand in December is 30 °C (86 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.
What is the average number of rainy days in Southeast Thailand in December?
There are 13 days, which are rainy in December in Southeast Thailand, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.0 days of the week, or in general - 43 % days.
What is the rainfall intensity in Southeast Thailand in December?
In December in Southeast Thailand, there is 173 mm (6.82 in) rainfall, which means on average 6 mm (0.23 in) rainfall per day.
What is the air temperature in Southeast Thailand in December at night?
The average night temperature in Southeast Thailand in December is 22 °C (72 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
Is it hot in Southeast Thailand in December?
In December in Southeast Thailand, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How many sunny hours can I expect in December in Southeast Thailand?
In December in Southeast Thailand, you can expect around 7 hours of sunshine.
What is the humidity in Southeast Thailand in December?
In Southeast Thailand in December, expect humidity around 80 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
How windy is it in Southeast Thailand in December?
In December in Southeast Thailand, there will be an average wind scale of 2. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.
Is the sea in Southeast Thailand warmer in December than in January?
No, the sea temperature in Southeast Thailand in December is not higher than in January.
How long is the day (from dawn till dusk) in Southeast Thailand in December?
The length of daylight in Southeast Thailand in December is 11 hours.
Is the weather in Southeast Thailand warmer in December than in November?
No, in Southeast Thailand in December the temperature is not higher than in November.
Is Southeast Thailand rainier in December than in November?
No, in Southeast Thailand in December it does not rain more than in November.
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