December weather forecast
Kertajaya, Indonesia

December

Weather in December

December, the first month of the summer in Kertajaya, is also a hot month, with an average temperature varying between 31.2°C (88.2°F) and 26.3°C (79.3°F).

Temperature

December's advent presents an average high-temperature of a still hot 31.2°C (88.2°F), indicating a slight variation from the conditions of the previous month. Kertajaya indicates a consistently low-temperature of 26.3°C (79.3°F) during the nights of December.

Heat index

The heat index for December is estimated at a fiery hot 39°C (102.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. 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 quite important for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In December, the average relative humidity in Kertajaya, Indonesia, is 74%.

Rainfall

In Kertajaya, in December, it is raining for 24.7 days, with typically 102mm (4.02") of accumulated precipitation. In Kertajaya, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") 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 the month, sunrise is at 05:02 and sunset at 17:33. On the last day of December, in Kertajaya, sunrise is at 05:15 and sunset at 17:48 WIB.

Sunshine

In Kertajaya, the average sunshine in December is 8.6h.

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 of 6 to 7 symbolizes 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:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

How hot is December in Kertajaya?
The high-temperature, in December, in Kertajaya, is 31.2°C (88.2°F), while the low-temperature averages to 26.3°C (79.3°F). In December, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 39°C (102.2°F).
What is the average humidity in December in Kertajaya?
In Kertajaya, the average relative humidity in December is 74%.
How much does it rain in Kertajaya in December?
In Kertajaya, during December, the rain falls for 24.7 days and regularly aggregates up to 102mm (4.02") of precipitation.
When are the longest days in Kertajaya?
December has the longest days of the year in Kertajaya, Indonesia, with an average of 12h and 30min of daylight.
What is the average length of the day in December in Kertajaya?
The average day length in December in Kertajaya is 12h and 32min.
What time are sunrise and sunset in December in Kertajaya?
On the first day of December, sunrise is at 05:02 and sunset at 17:33. On the last day of the month, sunrise is at 05:15 and sunset at 17:48 WIB.
How many hours of sunshine does Kertajaya have in December?
In December, the average sunshine duration is 8.6h.
When is the highest UV index in Kertajaya?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
What are the months with the lowest UV index in Kertajaya?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
How high is the UV index in December in Kertajaya?
In December, the average daily maximum UV index in Kertajaya is 7. A UV Index of 6 to 7 symbolizes 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
Kertajaya, Indonesia
  • Average high temperature in December: 31.2°C

The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).

  • Average low temperature in December: 26.3°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).

Average pressure in December
Kertajaya, Indonesia
  • Average pressure in December: 1008.7mbar

The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

Average wind speed in December
Kertajaya, Indonesia
  • Average wind speed in December: 7km/h

The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).

Average humidity in December
Kertajaya, Indonesia
  • Average humidity in December: 74%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).

Average rainfall in December
Kertajaya, Indonesia
  • Average rainfall in December: 102mm

The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in December
Kertajaya, Indonesia
  • Average rainfall days in December: 24.7 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).

Average daylight in December /
Average sunshine in December
Kertajaya, 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 42min).

  • Average sunshine in December: 8h and 4min

The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).

Average sunshine days in December
Kertajaya, Indonesia
  • Average sunshine days in December: 5.9 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).

Average UV index in December
Kertajaya, 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
Kertajaya, Indonesia
  • Average cloud cover in December: 38

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).

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

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

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