December weather forecast
Koh Chang, Thailand

December brings a festive mood, complemented by the pleasant weather in Koh Chang. It signifies a transition into comfortable temperatures from November and a welcoming reduction in rainfall. Sunshine dominates the scene as daylight hours lengthen, making outdoor activities even more appealing. The sea remains warm, offering a delightful contrast to the island's stimulating breeze. The merits of December lie within its mild rainfall of 26mm (1.02"), rendering it a delightful season for holidaymakers.

Temperature

June through September and December are identified as the coldest months in Koh Chang, with an average high-temperature of 30°C (86°F).

Rainfall

The month with the least rainfall in Koh Chang is December, when the rain falls for 3 days and typically collects 26mm (1.02") of precipitation.

Sea temperature

In Koh Chang, in December, the average water temperature is 28.6°C (83.5°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.

Daylight

The month with the shortest days is December, with an average of 11h and 24min of daylight.
On the first day of December, sunrise is at 06:15 and sunset at 17:43. On the last day of the month, sunrise is at 06:30 and sunset at 17:56 +07.

Sunshine

January and December, with an average of 9h of sunshine, are months with the most sunshine in Koh Chang.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 10. A UV Index reading of 8 to 10 represents a very high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 10 during December, leads to the following recommendations:
Emphasize protection. Neglecting it can lead to swift damage to the skin and eyes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Apply generously and frequently a broad-spectrum SPF 30+ sunscreen every two hours, or immediately after swimming or any outdoor exercise. Warning! The reflection of sand and water increases the UV dose.