December weather forecast
Cinere, Indonesia

December

Weather in December

December, the first month of the summer in Cinere, is also a hot month, with an average temperature fluctuating between 30.5°C (86.9°F) and 25.7°C (78.3°F).

Temperature

Cinere marks the onset of December with an average high-temperature of a still tropical 30.5°C (86.9°F), a subtle shift from November's 31.3°C (88.3°F). Cinere notes a consistent average low-temperature of 25.7°C (78.3°F) during December nights.

Heat index

During December, the heat index is estimated at a very hot 37°C (98.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In December, the average relative humidity is 72%.

Rainfall

In Cinere, in December, during 23.9 rainfall days, 104mm (4.09") of precipitation is typically accumulated. Throughout the year, in Cinere, there are 257.1 rainfall days, and 991mm (39.02") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 17:55. On the last day of December, in Cinere, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

In Cinere, the average sunshine in December is 9.4h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

How hot is it in December?
In Cinere, in December, the average high-temperature is 30.5°C (86.9°F), and the average low-temperature is 25.7°C (78.3°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in December is estimated at 37°C (98.6°F).
What is the average humidity in December?
In December, the average relative humidity is 72%.
How many days does it rain in December?
In December, the rain falls for 23.9 days. Throughout December, 104mm (4.09") of precipitation is accumulated.
When are the longest days?
With an average of 12h and 30min of daylight, December has the longest days of the year.
How many hours of daylight does Cinere have in December?
In Cinere, the average day length in December is 12h and 29min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 05:28 and sunset at 17:55. On the last day of the month, sunrise is at 05:41 and sunset at 18:10 WIB.
How long on average sun shines in December?
The average sunshine duration in December is 9.4h.
What is the month 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 is the month 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?
In December, the average daily maximum UV index in Cinere, Indonesia, is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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 - Cinere, Indonesia
Average temperature in December
Cinere, Indonesia
  • Average high temperature in December: 30.5°C

The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is February (29.6°C).

  • Average low temperature in December: 25.7°C

The month with the highest average low temperature is November (25.8°C).
The coldest month (with the lowest average low temperature) is July (24°C).

Average pressure in December - Cinere, Indonesia
Average pressure in December
Cinere, Indonesia
  • Average pressure in December: 1009.2mbar

The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in December - Cinere, Indonesia
Average wind speed in December
Cinere, Indonesia
  • Average wind speed in December: 10.1km/h

The windiest month (with the highest average wind speed) is January (11.2km/h).
The calmest month (with the lowest average wind speed) is November (7.5km/h).

Average humidity in December - Cinere, Indonesia
Average humidity in December
Cinere, Indonesia
  • Average humidity in December: 72%

The months with the highest relative humidity are February and March (76%).
The month with the lowest relative humidity is October (68%).

Average rainfall in December - Cinere, Indonesia
Average rainfall in December
Cinere, Indonesia
  • Average rainfall in December: 104mm

The wettest month (with the highest rainfall) is March (119mm).
The driest month (with the least rainfall) is August (36mm).

Average rainfall days in December - Cinere, Indonesia
Average rainfall days in December
Cinere, Indonesia
  • Average rainfall days in December: 23.9 days

The month with the highest number of rainy days is March (26.4 days).
The month with the least rainy days is August (12.5 days).

Average daylight in December / Average sunshine in December - Cinere, Indonesia
Average daylight in December /
Average sunshine in December
Cinere, 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: 9h and 2min

The month with the most sunshine is March (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).

Average sunshine days in December - Cinere, Indonesia
Average sunshine days in December
Cinere, Indonesia
  • Average sunshine days in December: 6.5 days

The month with the most sunshine days is August (15.2 days).
The month with the least sunshine days is February (2.6 days).

Average UV index in December - Cinere, Indonesia
Average UV index in December
Cinere, 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 - Cinere, Indonesia
Average cloud cover in December
Cinere, Indonesia
  • Average cloud cover in December: 42

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in December - Cinere, Indonesia
Average visibility in December
Cinere, 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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