Hat Yai
Thailand
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Hat Yai, Thailand

The first month of the winter, December, is also a moderately hot month in Hat Yai, Thailand, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 22.6°C (72.7°F).

Temperature

With an average high-temperature of 29.7°C (85.5°F) and an average low-temperature of 22.6°C (72.7°F), December is the coldest month.

Heat index

In December, the average heat index is calculated to a torrid 38.1°C (100.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Hat Yai, Thailand, the average relative humidity in December is 85%.

Rainfall

In December, the rain falls for 18 days. Throughout December, 267.7mm (10.5") of precipitation is accumulated. Throughout the year, in Hat Yai, there are 160 rainfall days, and 1726.3mm (68") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Hat Yai, with an average of 11.7h of daylight.

Sunshine

Months with the least sunshine in Hat Yai are June, August through December, with an average of 6h of sunshine.

UV index

January, November and December, with an average maximum UV index of 11, are months with the lowest UV index. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 11 in December transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the coldest month in Hat Yai?

December is the coldest month in Hat Yai, Thailand, with an average high-temperature of 29.7°C (85.5°F) and an average low-temperature of 22.6°C (72.7°F).

What is the temperature in December in Hat Yai?

The average high-temperature, in December, is 29.7°C (85.5°F), while the average low-temperature is 22.6°C (72.7°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, in December is estimated at 38.1°C (100.6°F).

What is the average humidity in December in Hat Yai?

In December, the average relative humidity is 85%.

How many days does it rain in December in Hat Yai?

In Hat Yai, in December, during 18 rainfall days, 267.7mm (10.5") of precipitation is typically accumulated.

What is the month with the shortest days in Hat Yai?

December has the shortest days of the year, with an average of 11.7h of daylight.

What is the average length of the day in December in Hat Yai?

In Hat Yai, the average length of the day in December is 11.7h.

What is the month with the least sunshine in Hat Yai?

June, August through December, with an average of 6h of sunshine, are months with the least sunshine in Hat Yai, Thailand.

How many hours of sunshine does Hat Yai have in December?

The average sunshine in December is 6h.

When is the lowest UV index in Hat Yai?

Months with the lowest UV index are January, November and December, with an average maximum UV index of 11.

How high is the UV index in December in Hat Yai?

In December, the average daily maximum UV index in Hat Yai is 11. A UV Index reading of 11, and higher, represents an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in December - Hat Yai, Thailand
  • Average high temperature in December: 29.7°C

The warmest month (with the highest average high temperature) is April (34.6°C).
The month with the lowest average high temperature is December (29.7°C).

  • Average low temperature in December: 22.6°C

The month with the highest average low temperature is May (24°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average humidity in December - Hat Yai, Thailand
  • Average humidity in December: 85%

The month with the highest relative humidity is November (87%).
The month with the lowest relative humidity is March (76%).

Average rainfall in December - Hat Yai, Thailand
  • Average rainfall in December: 267.7mm

The wettest month (with the highest rainfall) is November (317.1mm).
The driest month (with the lowest rainfall) is February (24.4mm).

Average rainfall days in December - Hat Yai, Thailand
  • Average rainfall days in December: 18 days

Months with the highest number of rainy days are October and November (21 days).
The month with the lowest number of rainy days is February (3 days).

Average daylight in December / Average sunshine in December - Hat Yai, Thailand
  • Average daylight in December: 11.7h

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in December: 6h

The month with most sunshine is February (Average sunshine: 9h).
Months with least sunshine are June, August, September, October, November and December (Average sunshine: 6).

Average UV index in December - Hat Yai, Thailand
  • Average UV index in December: 11

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).