December weather forecast
Long Seniai, Malaysia

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Long Seniai, Malaysia, with an average temperature ranging between min 19.8°C (67.6°F) and max 29.1°C (84.4°F).

Temperature

December reports an average high-temperature of a still warm 29.1°C (84.4°F), slightly varied from November's 29.5°C (85.1°F). Long Seniai, during December nights, observes an average temperature of 19.8°C (67.6°F).

Heat index

The average heat index in December is computed to be a sweltering 37°C (98.6°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The months with the highest humidity in Long Seniai are January, November and December, with an average relative humidity of 87%.

Rainfall

In Long Seniai, Malaysia, in December, it is raining for 30 days, with typically 263mm (10.35") of accumulated precipitation. Throughout the year, there are 331.4 rainfall days, and 2641mm (103.98") of precipitation is accumulated.

Daylight

With an average of 11h and 54min of daylight, December has the shortest days of the year in Long Seniai, Malaysia.
On the first day of December in Long Seniai, sunrise is at 6:11 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 6:21 pm +08.

Sunshine

In December, the average sunshine is 6.6h.

UV index

The months with the highest UV index in Long Seniai are January, March through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

How hot is December in Long Seniai?
The high-temperature, in December, in Long Seniai, records 29.1°C (84.4°F), while the low-temperature is 19.8°C (67.6°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in December is computed to be 37°C (98.6°F).
What is the most humid month in Long Seniai?
January, November and December, with an average relative humidity of 87%, are most humid months in Long Seniai, Malaysia.
What is the average humidity in December in Long Seniai?
In Long Seniai, Malaysia, the average relative humidity in December is 87%.
How much does it rain in Long Seniai in December?
In Long Seniai, Malaysia, in December, during 30 rainfall days, 263mm (10.35") of precipitation is typically accumulated.
What is the month with the shortest days in Long Seniai?
December has the shortest days of the year, with an average of 11h and 54min of daylight.
What is the average length of the day in December in Long Seniai?
In December, the average day length is 11h and 56min.
When are sunrise and sunset in December in Long Seniai?
In December, on the first day of the month, sunrise is at 6:11 am and sunset at 6:07 pm. On the last day of the month, in Long Seniai, sunrise is at 6:25 am and sunset at 6:21 pm +08.
How long on average sun shines in December in Long Seniai?
In Long Seniai, the average sunshine duration in December is 6.6h.
When is the highest UV index in Long Seniai?
The months with the highest UV index in Long Seniai, Malaysia, are January, March through December, with an average maximum UV index of 6.
How high is the UV index in December in Long Seniai?
In Long Seniai, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
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
Long Seniai, Malaysia
  • Average high temperature in December: 29.1°C

The warmest month (with the highest average high temperature) is September (30.7°C).
The month with the lowest average high temperature is January (28.7°C).

  • Average low temperature in December: 19.8°C

The month with the highest average low temperature is May (20.1°C).
The coldest month (with the lowest average low temperature) is July (19.1°C).

Average pressure in December
Long Seniai, Malaysia
  • Average pressure in December: 1009.9mbar

The month with the highest atmospheric pressure is March (1011mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in December
Long Seniai, Malaysia
  • Average wind speed in December: 3.2km/h

The windiest months (with the highest average wind speed) are July, August, September and October (3.4km/h).
The calmest month (with the lowest average wind speed) is November (3.1km/h).

Average humidity in December
Long Seniai, Malaysia
  • Average humidity in December: 87%

The months with the highest relative humidity are January, November and December (87%).
The months with the lowest relative humidity are July, August and September (81%).

Average rainfall in December
Long Seniai, Malaysia
  • Average rainfall in December: 263mm

The wettest month (with the highest rainfall) is April (296mm).
The driest month (with the least rainfall) is September (107mm).

Average rainfall days in December
Long Seniai, Malaysia
  • Average rainfall days in December: 30 days

The month with the highest number of rainy days is December (30 days).
The month with the least rainy days is June (23.8 days).

Average daylight in December /
Average sunshine in December
Long Seniai, 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: 6h and 4min

The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 24min).

Average sunshine days in December
Long Seniai, Malaysia
  • Average sunshine days in December: 0.7 days

The month with the most sunshine days is June (4.5 days).
The month with the least sunshine days is November (0.6 days).

Average UV index in December
Long Seniai, Malaysia
  • Average UV index in December: 6

The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is February (UV index 5).

Average cloud cover in December
Long Seniai, Malaysia
  • Average cloud cover in December: 61

The months with the most cloud cover are January and November (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 48).

Average visibility in December
Long Seniai, Malaysia
  • Average visibility in December: 6km

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

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