December weather forecast
Bintulu, Malaysia

Weather in December

December, the first month of the winter in Bintulu, is still a warm month, with an average temperature fluctuating between 24.2°C (75.6°F) and 29.5°C (85.1°F).

Temperature

In Bintulu, the average high-temperature in December is relatively the same as in November - a moderately hot 29.5°C (85.1°F). The average low-temperature, in December, is 24.2°C (75.6°F).

Heat index

In December, the average heat index is computed to be a very hot 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, pregnancy, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in December in Bintulu is 84%.

Rainfall

The month with the most rainfall is December, when the rain falls for 28.7 days and typically aggregates up to 275mm (10.83") of precipitation.

Sea temperature

In Bintulu, Malaysia, the average seawater temperature in December is 29.3°C (84.7°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

With an average of 11h and 56min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:18 am and sunset at 6:15 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:28 pm +08.

Sunshine

In December, the average sunshine in Bintulu is 7.4h.

UV index

The months with the lowest UV index in Bintulu are January and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in December transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Bintulu?

The average high-temperature, in December, is 29.5°C (85.1°F), while the average low-temperature is 24.2°C (75.6°F). in December, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 37°C (98.6°F).

What is the average humidity in December in Bintulu?

The average relative humidity in December in Bintulu, Malaysia, is 84%.

What is the wettest month in Bintulu?

December is the month with the most rainfall in Bintulu, Malaysia. Rain falls for 28.7 days and accumulates 275mm (10.83") of precipitation.

How much does it rain in Bintulu in December?

In Bintulu, Malaysia, during December, the rain falls for 28.7 days and regularly aggregates up to 275mm (10.83") of precipitation.

How warm is the water in December in Bintulu?

In December, the average sea temperature in Bintulu is 29.3°C (84.7°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the shortest days in Bintulu?

The month with the shortest days in Bintulu is December, with an average of 11h and 56min of daylight.

How many hours of daylight does Bintulu have in December?

In Bintulu, the average day length in December is 11h and 56min.

When is the sunrise / sunset in December in Bintulu?

On the first day of December in Bintulu, sunrise is at 6:18 am and sunset at 6:15 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 6:28 pm +08.

How many hours of sunshine does Bintulu have in December?

In Bintulu, the average sunshine duration in December is 7.4h.

What are the months with the lowest UV index in Bintulu?

The months with the lowest UV index are January and December, with an average maximum UV index of 6.

What is the UV index intensity in December in Bintulu?

The average daily maximum UV index in December in Bintulu, Malaysia, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in December
Bintulu, Malaysia

Average temperature in December - Bintulu, Malaysia
  • Average high temperature in December: 29.5°C

The warmest months (with the highest average high temperature) are May and August (31.2°C).
The months with the lowest average high temperature are January and February (28.8°C).

  • Average low temperature in December: 24.2°C

The month with the highest average low temperature is May (24.9°C).
The coldest month (with the lowest average low temperature) is February (23.7°C).

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Average pressure in December
Bintulu, Malaysia

Average pressure in December - Bintulu, Malaysia
  • Average pressure in December: 1009mbar

The months with the highest atmospheric pressure are February and March (1010.1mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).

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Average wind speed in December
Bintulu, Malaysia

Average wind speed in December - Bintulu, Malaysia
  • Average wind speed in December: 7.2km/h

The windiest month (with the highest average wind speed) is February (8.6km/h).
The calmest month (with the lowest average wind speed) is May (6.3km/h).

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Average humidity in December
Bintulu, Malaysia

Average humidity in December - Bintulu, Malaysia
  • Average humidity in December: 84%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (78%).

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Average rainfall in December
Bintulu, Malaysia

Average rainfall in December - Bintulu, Malaysia
  • Average rainfall in December: 275mm

The wettest month (with the highest rainfall) is December (275mm).
The driest month (with the least rainfall) is September (130mm).

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Average rainfall days in December
Bintulu, Malaysia

Average rainfall days in December - Bintulu, Malaysia
  • Average rainfall days in December: 28.7 days

The month with the highest number of rainy days is November (29 days).
The month with the least rainy days is June (23.3 days).

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Average sea temperature in December
Bintulu, Malaysia

Average sea temperature in December - Bintulu, Malaysia
  • Average sea temperature in December: 29.3°C

The best months for swimming (with the highest average sea temperature) are May, June and July (30.3°C).
The coldest month (with the lowest average sea temperature) is February (27.4°C).

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

Average daylight in December / Average sunshine in December - Bintulu, Malaysia
  • Average daylight in December: 11h and 56min

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 56min).

  • Average sunshine in December: 7h and 24min

The month with the most sunshine is September (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

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Average sunshine days in December
Bintulu, Malaysia

Average sunshine days in December - Bintulu, Malaysia
  • Average sunshine days in December: 1.9 days

The month with the most sunshine days is July (5.8 days).
The month with the least sunshine days is November (0.7 days).

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Average UV index in December
Bintulu, Malaysia

Average UV index in December - Bintulu, Malaysia
  • Average UV index in December: 6

The months with the highest UV index are February, March, April, May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January and December (UV index 6).

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Average cloud cover in December
Bintulu, Malaysia

Average cloud cover in December - Bintulu, Malaysia
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 39).

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Average visibility in December
Bintulu, Malaysia

Average visibility in December - Bintulu, Malaysia
  • Average visibility in December: 9km

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

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