Cha-am
Thailand
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Cha-am, Thailand

The first month of the winter, December, is still a warm month in Cha-am, Thailand, with temperature in the range of an average high of 29°C (84.2°F) and an average low of 21°C (69.8°F).
An excellent water temperature of 28°C (82.4°F) and only 2 rainfall days, with 16mm (0.6") of accumulated rainfall, makes December a prime for swimming and other water activities.

Temperature

January and December, with an average high-temperature of 29°C (84.2°F), are the coldest months in Cha-am.

Rainfall

In Cha-am, in December, it is raining for 2 days, with typically 16mm (0.6") of accumulated precipitation. In Cha-am, during the entire year, the rain falls for 123 days and collects up to 1182mm (46.5") of precipitation.

Sea temperature

January, February and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Cha-am.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

With an average of 11.4h of daylight, December has the shortest days of the year in Cha-am.

Sunshine

January through March and December, with an average of 9h of sunshine, are months with the most sunshine in Cha-am.

UV index

December is the month with the lowest UV index in Cha-am, with an average maximum UV index of 9. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 9 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What are the coldest months in Cha-am?

The coldest months in Cha-am, Thailand, are January and December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in December in Cha-am?

In Cha-am, Thailand, in December, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 21°C (69.8°F).

How many days does it rain in December in Cha-am?

In Cha-am, during December, the rain falls for 2 days and regularly aggregates up to 16mm (0.6") of precipitation.

What are the months with the coldest sea water in Cha-am?

Months with the coldest seawater in Cha-am, Thailand, are January, February and December, with an average sea temperature of 28°C (82.4°F).

What is the sea water temperature in December in Cha-am?

In Cha-am, Thailand, the average seawater temperature in December is 28°C (82.4°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Cha-am?

December has the shortest days of the year, with an average of 11.4h of daylight.

What is the average length of the day in December in Cha-am?

In December, the average length of the day in Cha-am is 11.4h.

What is the month with the most sunshine in Cha-am?

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

How long on average sun shines in December in Cha-am?

In Cha-am, the average sunshine in December is 9h.

When is the lowest UV index in Cha-am?

December is the month with the lowest UV index in Cha-am, Thailand, with an average maximum UV index of 9.

What is the UV index reading in December in Cha-am?

In December, the average daily maximum UV index in Cha-am, Thailand, is 9. A UV Index of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in December - Cha-am, Thailand
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are April, May and June (33°C).
Months with the lowest average high temperature are January and December (29°C).

  • Average low temperature in December: 21°C

Months with the highest average low temperature are April, May, June and August (25°C).
The coldest month (with the lowest average low temperature) is January (20°C).

Average rainfall in December - Cha-am, Thailand
  • Average rainfall in December: 16mm

The wettest month (with the highest rainfall) is October (223mm).
The driest month (with the lowest rainfall) is January (12mm).

Average rainfall days in December - Cha-am, Thailand
  • Average rainfall days in December: 2 days

Months with the highest number of rainy days are August and September (18 days).
Months with the lowest number of rainy days are January and December (2 days).

Average sea temperature in December - Cha-am, Thailand
  • Average sea temperature in December: 28°C

Best months for swimming (with the highest average sea temperature) are April, May and June (30°C).
Coldest months (with the lowest average sea temperature) are January, February and December (28°C).

Average daylight in December / Average sunshine in December - Cha-am, Thailand
  • Average daylight in December: 11.4h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.4h).

  • Average sunshine in December: 9h

Months with most sunshine are January, February, March and December (Average sunshine: 9h).
Months with least sunshine are June, July, August and September (Average sunshine: 5).

Average UV index in December - Cha-am, Thailand
  • Average UV index in December: 9

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 9).