December weather forecast
Shah Alam, Malaysia

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Weather in December

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.

Frequently asked questions

What time of the year is the coldest in Shah Alam?

In Shah Alam, December records the average lowest temperatures, peaking at 31.1°C (88°F) and reaching a low of 23.9°C (75°F).

How hot does it get in Shah Alam in December?

In Shah Alam, 31.1°C (88°F) is the average high-temperature and 23.9°C (75°F) is the average low-temperature during December. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in December is appraised at 42°C (107.6°F).

What is the most humid month in Shah Alam?

The most humid month in Shah Alam, Malaysia, is December, with an average relative humidity of 81%.

What is the average humidity in December in Shah Alam?

The average relative humidity in December in Shah Alam is 81%.

What is the rainiest month in Shah Alam?

The month with the most rainfall in Shah Alam, Malaysia, is December, when the rain falls for 11.9 days and typically aggregates up to 37mm (1.46") of precipitation.

How much does it rain in Shah Alam in December?

In December, in Shah Alam, Malaysia, the rain falls for 11.9 days. Throughout December, 37mm (1.46") of precipitation is accumulated.

What is the month with the shortest days in Shah Alam?

The month with the shortest days is December, with an average of 11h and 54min of daylight.

How many hours of daylight does Shah Alam have in December?

The average day length in December in Shah Alam, Malaysia, is 11h and 57min.

When is the sunrise / sunset in December in Shah Alam?

On the first day of December in Shah Alam, Malaysia, sunrise is at 7:04 am and sunset at 7:01 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:15 pm +08.

What is the month with the least sunshine in Shah Alam?

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

How long on average sun shines in December in Shah Alam?

In December, the average sunshine duration in Shah Alam, Malaysia, is 7.6h.

When is the highest UV index in Shah Alam?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Shah Alam, Malaysia.

When is the lowest UV index in Shah Alam?

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index intensity in December in Shah Alam?

In Shah Alam, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Shah Alam, Malaysia

Average temperature in December - Shah Alam, Malaysia
  • Average high temperature in December: 31.1°C

The warmest month (with the highest average high temperature) is August (33°C).
The month with the lowest average high temperature is December (31.1°C).

  • Average low temperature in December: 23.9°C

The month with the highest average low temperature is May (24.9°C).
The coldest months (with the lowest average low temperature) are January and February (23.4°C).

Average pressure in December
Shah Alam, Malaysia

Average pressure in December - Shah Alam, Malaysia
  • Average pressure in December: 1009.6mbar

The month with the highest atmospheric pressure is January (1010.4mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).

Average wind speed in December
Shah Alam, Malaysia

Average wind speed in December - Shah Alam, Malaysia
  • Average wind speed in December: 4.6km/h

The windiest months (with the highest average wind speed) are July and August (5.9km/h).
The calmest month (with the lowest average wind speed) is December (4.6km/h).

Average humidity in December
Shah Alam, Malaysia

Average humidity in December - Shah Alam, Malaysia
  • Average humidity in December: 81%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are August and September (71%).

Average rainfall in December
Shah Alam, Malaysia

Average rainfall in December - Shah Alam, Malaysia
  • Average rainfall in December: 37mm

The wettest month (with the highest rainfall) is December (37mm).
The driest month (with the least rainfall) is September (7mm).

Average rainfall days in December
Shah Alam, Malaysia

Average rainfall days in December - Shah Alam, Malaysia
  • Average rainfall days in December: 11.9 days

The months with the highest number of rainy days are November and December (11.9 days).
The month with the least rainy days is September (4.6 days).

Average daylight in December /
Average sunshine in December
Shah Alam, Malaysia

Average daylight in December / Average sunshine in December - Shah Alam, Malaysia
  • Average daylight in December: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).

  • Average sunshine in December: 7h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 0min).
The months with the least sunshine are November and December (Average sunshine: 7h and 36min).

Average sunshine days in December
Shah Alam, Malaysia

Average sunshine days in December - Shah Alam, Malaysia
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is September (24.9 days).
The month with the least sunshine days is December (16.2 days).

Average UV index in December
Shah Alam, Malaysia

Average UV index in December - Shah Alam, Malaysia
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in December
Shah Alam, Malaysia

Average cloud cover in December - Shah Alam, Malaysia
  • Average cloud cover in December: 47

The month with the most cloud cover is November (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Shah Alam, Malaysia

Average visibility in December - Shah Alam, Malaysia
  • Average visibility in December: 9km

The months with the highest visibility are February, March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, November and December (9km).

Shah Alam, Malaysia

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