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

Koh Chang sees its lowest temperatures during June through September and December, with an average high-temperature of 30°C (86°F).

Rainfall

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

Sea temperature

In Koh Chang, the average seawater temperature in December is 28.6°C (83.5°F).
Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.

Daylight

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

Sunshine

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

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 of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 10 in December translates into this advice:
Emphasize protection. Neglecting it can lead to swift damage to the skin and eyes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise. Take note! The UV strength of the Sun elevates when reflected off water and sand.