December weather forecast
Sentul, Indonesia

December

Weather in December

December, the first month of the summer in Sentul, is also a hot month, with an average temperature varying between 30.4°C (86.7°F) and 24.8°C (76.6°F).

Temperature

Sentul experiences a recorded average high-temperature of a still tropical 30.4°C (86.7°F) in December, closely aligned with November's 31.1°C (88°F). In Sentul, an average nighttime temperature of 24.8°C (76.6°F) is expected during December.

Heat index

The average heat index in December is estimated at a torrid 38°C (100.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in December in Sentul, Indonesia, is 76%.

Rainfall

In Sentul, during December, the rain falls for 25 days and regularly aggregates up to 128mm (5.04") of precipitation. In Sentul, during the entire year, the rain falls for 221.5 days and collects up to 926mm (36.46") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:27 and sunset at 17:55. On the last day of the month, sunrise is at 05:40 and sunset at 18:10 WIB.

Sunshine

With an average of 8.5h of sunshine, December has the least sunshine of the year.

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. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 7 in December translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

How hot is December?
Sentul in December has an average high-temperature of 30.4°C (86.7°F) and an average low-temperature of 24.8°C (76.6°F). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in December is estimated at 38°C (100.4°F).
What is the average humidity in December?
The average relative humidity in December is 76%.
How much does it rain in December?
In December, the rain falls for 25 days. Throughout December, 128mm (5.04") of precipitation is accumulated.
When are the longest days?
December has the longest days of the year, with an average of 12h and 30min of daylight.
How many hours of daylight does Sentul have in December?
The average day length in December is 12h and 30min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 05:27 and sunset at 17:55. On the last day of the month, in Sentul, sunrise is at 05:40 and sunset at 18:10 WIB.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 8.5h of sunshine.
How many hours of sunshine does Sentul have in December?
The average sunshine duration in December is 8.5h.
What are the months with the highest UV index?
The months with the highest UV index are January through December, with an average maximum UV index of 7.
What are the months with the lowest UV index?
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?
The average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health threat from 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
Sentul, Indonesia
  • Average high temperature in December: 30.4°C

The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (29.4°C).

  • Average low temperature in December: 24.8°C

The month with the highest average low temperature is December (24.8°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).

Average pressure in December
Sentul, Indonesia
  • Average pressure in December: 1009.2mbar

The month with the highest atmospheric pressure is September (1011.3mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in December
Sentul, Indonesia
  • Average wind speed in December: 6.8km/h

The windiest month (with the highest average wind speed) is August (12.7km/h).
The calmest month (with the lowest average wind speed) is December (6.8km/h).

Average humidity in December
Sentul, Indonesia
  • Average humidity in December: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is September (69%).

Average rainfall in December
Sentul, Indonesia
  • Average rainfall in December: 128mm

The wettest months (with the highest rainfall) are February and March (142mm).
The driest month (with the least rainfall) is August (10mm).

Average rainfall days in December
Sentul, Indonesia
  • Average rainfall days in December: 25 days

The months with the highest number of rainy days are March and December (25 days).
The month with the least rainy days is August (6.5 days).

Average daylight in December /
Average sunshine in December
Sentul, Indonesia
  • Average daylight in December: 12h and 3min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).

  • Average sunshine in December: 8h and 3min

The months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 8h and 30min).

Average sunshine days in December
Sentul, Indonesia
  • Average sunshine days in December: 4 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is December (4 days).

Average UV index in December
Sentul, Indonesia
  • 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
Sentul, Indonesia
  • Average cloud cover in December: 46

The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in December
Sentul, Indonesia
  • Average visibility in December: 10km

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

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