December weather forecast
Shah Alam, Malaysia

December in Shah Alam, Malaysia is marked by constant temperatures, unvarying from those felt in November. December, however, becomes the foggiest month with the lowest visibility of 9km (5.6mi). Despite the increased fog, the average humidity levels continue to rise, creating misty mornings - an iconic facet of December weather. With a nearly consistent number of sunshine hours and daylight hours, the diverse weather conditions from the cold mornings to the warm afternoons shape December into a delightful end of the year.

Temperature

The coldest month is December, with an average high-temperature of 31.1°C (88°F) and an average low-temperature of 23.9°C (75°F).

Heat index

The heat index value during December is appraised at a blistering 42°C (107.6°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to 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.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

December is the most humid month, with an average relative humidity of 81%.

Rainfall

December is the month with the most rainfall in Shah Alam. Rain falls for 11.9 days and accumulates 37mm (1.46") of precipitation.

Daylight

December has the shortest days of the year in Shah Alam, with an average of 11h and 54min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 7:01 pm. On the last day of December, sunrise is at 7:18 am and sunset at 7:15 pm +08.

Sunshine

The months with the least sunshine are November and December, with an average of 7.6h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Shah Alam. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in December translates into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.