December weather forecastKulai, Malaysia

December

Weather in December

December, the first month of the winter in Kulai, is also a moderately hot month, with an average temperature fluctuating between 24°C (75.2°F) and 29.9°C (85.8°F).

Temperature

In Kulai, the coldest period comes during January and December, when the average high-temperature touches 29.9°C (85.8°F).

Heat index

December's mean heat index is appraised at a sweltering 39°C (102.2°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

With an average relative humidity of 84%, December is the most humid month.

Rainfall

In Kulai, in December, it is raining for 26.8 days, with typically 117mm (4.61") of accumulated precipitation. In Kulai, during the entire year, the rain falls for 301.8 days and collects up to 992mm (39.06") of precipitation.

Daylight

The month with the shortest days is December, with an average of 12h and 0min of daylight.
On the first day of December, sunrise is at 6:53 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 7:09 pm +08.

Sunshine

The month with the least sunshine is December, with an average of 6.8h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Frequently asked questions

During January and December, Kulai experiences its coldest period, with an average high-temperature of 29.9°C (85.8°F).

In December, in Kulai, the average high-temperature is 29.9°C (85.8°F), and the average low-temperature is 24°C (75.2°F). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is appraised at 39°C (102.2°F).

December is the most humid month, with an average relative humidity of 84%.

The average relative humidity in December is 84%.

In Kulai, in December, during 26.8 rainfall days, 117mm (4.61") of precipitation is typically accumulated.

The month with the shortest days is December, with an average of 12h and 0min of daylight.

In December, the average day length is 12h and 2min.

On the first day of December, sunrise is at 6:53 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 7:09 pm +08.

The month with the least sunshine is December, with an average of 6.8h of sunshine.

In December, the average sunshine duration in Kulai is 6.8h.

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 Kulai, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Kulai, Malaysia

  • Average high temperature in December: 29.9°C

The warmest month (with the highest average high temperature) is May (32.1°C).
The months with the lowest average high temperature are January and December (29.9°C).

  • Average low temperature in December: 24°C

The month with the highest average low temperature is May (25.1°C).
The coldest month (with the lowest average low temperature) is February (23.5°C).

Average pressure in December
Kulai, Malaysia

  • Average pressure in December: 1009.3mbar

The month with the highest atmospheric pressure is February (1010.3mbar).
The month with the lowest atmospheric pressure is May (1008.5mbar).

Average wind speed in December
Kulai, Malaysia

  • Average wind speed in December: 6.6km/h

The windiest month (with the highest average wind speed) is January (7.9km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

Average humidity in December
Kulai, Malaysia

  • Average humidity in December: 84%

The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are August and September (76%).

Average rainfall in December
Kulai, Malaysia

  • Average rainfall in December: 117mm

The wettest month (with the highest rainfall) is November (121mm).
The driest month (with the least rainfall) is February (51mm).

Average rainfall days in December
Kulai, Malaysia

  • Average rainfall days in December: 26.8 days

The month with the highest number of rainy days is May (27 days).
The month with the least rainy days is February (19.9 days).

Average daylight in December /
Average sunshine in December
Kulai, Malaysia

  • Average daylight in December: 12h and 0min

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).

  • Average sunshine in December: 6h and 48min

The month with the most sunshine is September (Average sunshine: 8h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in December
Kulai, Malaysia

  • Average sunshine days in December: 3.2 days

The month with the most sunshine days is February (5.5 days).
The month with the least sunshine days is April (2.1 days).

Average UV index in December
Kulai, 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
Kulai, Malaysia

  • Average cloud cover in December: 51

The month with the most cloud cover is December (Cloud cover 51).
The months with the least cloud cover are June, July, August and September (Cloud cover 35).

Average visibility in December
Kulai, Malaysia

  • Average visibility in December: 9km

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