December weather forecast
Hat Yai, Thailand

December in Hat Yai embraces the climax of the year's weather cycle, with a remarkable dip in temperature and reduction in rainfall. The cityscape undergoes a bold transformation as it ushers in the new year under soothing temperatures and a glistening solar spectacle caused by the distinctive December sunshine. With the relentless downpour curtailed, outdoor recreational activities gain momentum, with throngs of tourists flocking to enjoy Hat Yai's December charm. The scorching sun remains well-tamed throughout the month, embracing the city with a soothing warmth from dawn until dusk. After November's peak, December's rainfall drops by 16%, providing some respite with precipitation measuring 268mm (10.55").

Temperature

The coldest time of the year is December, with temperatures averaging a high of 29.7°C (85.5°F) and a low of 22.6°C (72.7°F).

Heat index

The heat index value during December is evaluated at a very hot 38°C (100.4°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

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

Rainfall

In Hat Yai, in December, during 18 rainfall days, 268mm (10.55") of precipitation is typically accumulated. In Hat Yai, during the entire year, the rain falls for 160 days and collects up to 1726mm (67.95") of precipitation.

Daylight

The month with the shortest days in Hat Yai is December, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:14 and sunset at 17:59. On the last day of the month, sunrise is at 06:29 and sunset at 18:12 +07.

Sunshine

The months with the least sunshine are June, August through December, with an average of 6h of sunshine.

UV index

The months with the lowest UV index in Hat Yai are January, November and December, with an average maximum UV index of 11. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 11 in December translates into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise.