December weather forecast
Cijantra, Indonesia

December

Weather in December

The first month of the summer, December, is also a hot month in Cijantra, Indonesia, with an average temperature varying between 30.5°C (86.9°F) and 26.3°C (79.3°F).

Temperature

December's weather displays an average high-temperature of a still tropical 30.5°C (86.9°F), slightly varied from November's 30.9°C (87.6°F). Cijantra encounters a small divergence from daytime high temperatures, averaging a low-temperature of 26.3°C (79.3°F) during December nights.

Heat index

The heat index value during December is calculated to be a very hot 37°C (98.6°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity is 73%.

Rainfall

In Cijantra, in December, it is raining for 24.9 days, with typically 128mm (5.04") of accumulated precipitation. Throughout the year, there are 284.6 rainfall days, and 1327mm (52.24") 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 17:56. On the last day of December, sunrise is at 05:42 and sunset at 18:11 WIB.

Sunshine

In December, the average sunshine is 9.4h.

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 estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in December translates into this advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

How hot does it get in December?
The high-temperature, in December, in Cijantra, is 30.5°C (86.9°F), while the low-temperature averages to 26.3°C (79.3°F). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in December is calculated to be 37°C (98.6°F).
What is the average humidity in December?
In Cijantra, the average relative humidity in December is 73%.
How much does it rain in Cijantra in December?
In Cijantra, in December, during 24.9 rainfall days, 128mm (5.04") of precipitation is typically 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 Cijantra have in December?
In December, the average day length is 12h and 29min.
When is the sunrise / sunset in December?
On the first day of December, sunrise is at 05:28 and sunset at 17:56. On the last day of the month, sunrise is at 05:42 and sunset at 18:11 WIB.
How long on average sun shines in December?
The average sunshine duration in December is 9.4h.
What are the months with the highest UV index?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
When is the lowest UV index in Cijantra?
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 Cijantra, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health threat 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
Cijantra, Indonesia
  • Average high temperature in December: 30.5°C

The warmest month (with the highest average high temperature) is October (31.3°C).
The month with the lowest average high temperature is January (29.6°C).

  • Average low temperature in December: 26.3°C

The months with the highest average low temperature are October and November (26.5°C).
The coldest month (with the lowest average low temperature) is July (24.9°C).

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

The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in December
Cijantra, Indonesia
  • Average wind speed in December: 11.8km/h

The windiest month (with the highest average wind speed) is January (12.6km/h).
The calmest months (with the lowest average wind speed) are September and November (8.7km/h).

Average humidity in December
Cijantra, Indonesia
  • Average humidity in December: 73%

The months with the highest relative humidity are February and March (76%).
The months with the lowest relative humidity are September and October (69%).

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

The wettest month (with the highest rainfall) is February (162mm).
The driest month (with the least rainfall) is August (49mm).

Average rainfall days in December
Cijantra, Indonesia
  • Average rainfall days in December: 24.9 days

The month with the highest number of rainy days is March (28.1 days).
The month with the least rainy days is August (15.3 days).

Average daylight in December /
Average sunshine in December
Cijantra, 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 12min).

Average sunshine days in December
Cijantra, Indonesia
  • Average sunshine days in December: 5.2 days

The month with the most sunshine days is August (10.5 days).
The month with the least sunshine days is March (1.8 days).

Average UV index in December
Cijantra, 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
Cijantra, Indonesia
  • Average cloud cover in December: 43

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in December
Cijantra, 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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