December weather forecast
Alor Setar, Malaysia

In Alor Setar, December rings in a break from the rains of November. While there remains a bit of a chill in the air with the lowest minimum temperature of the year at 23.2°C (73.8°F), there is a sharp drop in rainfall to 77mm (3.03"). December exhibits typical characteristics of a tropical monsoon climate, with the month experiencing less rain and lower temperatures compared to the previous month. Although there is an increase in wind speed to 8.9km/h (5.5mph), it provides a gentle breeze, making the outdoor temperature feel pleasant. Alor Setar’s year signs off with the promise of a dynamic weather shift, as the city looks ahead to begin another climATIC cycle.

Temperature

The lowest level of Alor Setar's temperatures is noted during November and December, averaging a high-temperature of 30.5°C (86.9°F).

Heat index

In December, the heat index is computed to be a scorching 40°C (104°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In December, the average relative humidity in Alor Setar is 83%.

Rainfall

In Alor Setar, during December, the rain falls for 17.5 days and regularly aggregates up to 77mm (3.03") of precipitation. Throughout the year, in Alor Setar, there are 245.2 rainfall days, and 973mm (38.31") of precipitation is accumulated.

Sea temperature

In Alor Setar, the average seawater temperature in December is 28.8°C (83.8°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Alor Setar, Malaysia.
On the first day of the month, sunrise is at 7:13 am and sunset at 7:01 pm. On the last day of December, in Alor Setar, sunrise is at 7:28 am and sunset at 7:14 pm +08.

Sunshine

In December, the average sunshine is 8.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Alor Setar. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 7 translates into these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Warning! Sand and water reflections boost the intensity of UV exposure.