December weather forecast
Klangenan, Indonesia

December

Weather in December

The first month of the summer, December, is still a tropical month in Klangenan, Indonesia, with an average temperature fluctuating between 25°C (77°F) and 30.5°C (86.9°F).

Temperature

Klangenan observes an average high-temperature of a still tropical 30.5°C (86.9°F) in December, barely different from 31.3°C (88.3°F) in November. Klangenan's nighttime temperature in December drops to an average of 25°C (77°F).

Heat index

The heat index for December is evaluated at a sweltering 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In Klangenan, the average relative humidity in December is 75%.

Rainfall

December is the month with the most rainfall. Rain falls for 25.5 days and accumulates 146mm (5.75") 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 05:20 and sunset at 17:49. On the last day of December, sunrise is at 05:34 and sunset at 18:04 WIB.

Sunshine

The month with the least sunshine is December, with an average of 8.2h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

How hot is it in December?
The high-temperature during December is 30.5°C (86.9°F) and the low-temperature is 25°C (77°F). In December, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is evaluated at 38°C (100.4°F).
What is the average humidity in December?
In December, the average relative humidity is 75%.
What is the wettest month?
The month with the most rainfall is December, when the rain falls for 25.5 days and typically aggregates up to 146mm (5.75") of precipitation.
How much does it rain in December?
In Klangenan, in December, it is raining for 25.5 days, with typically 146mm (5.75") of accumulated precipitation.
When are the longest days in Klangenan?
The month with the longest days is December, with an average of 12h and 30min of daylight.
What is the average length of the day in December?
In Klangenan, the average day length in December is 12h and 30min.
What time are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 05:20 and sunset at 17:49. On the last day of the month, sunrise is at 05:34 and sunset at 18:04 WIB.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 8.2h of sunshine.
How many hours of sunshine does Klangenan have in December?
In December, the average sunshine duration is 8.2h.
When is 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?
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 Klangenan?
In December, the average daily maximum UV index is 7. A UV Index value 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
Klangenan, 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 (29.4°C).

  • Average low temperature in December: 25°C

The months with the highest average low temperature are November and December (25°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).

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

The month with the highest atmospheric pressure is September (1011.4mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in December
Klangenan, Indonesia
  • Average wind speed in December: 7.1km/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 April (6.9km/h).

Average humidity in December
Klangenan, Indonesia
  • Average humidity in December: 75%

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

Average rainfall in December
Klangenan, Indonesia
  • Average rainfall in December: 146mm

The wettest month (with the highest rainfall) is December (146mm).
The driest month (with the least rainfall) is August (10mm).

Average rainfall days in December
Klangenan, Indonesia
  • Average rainfall days in December: 25.5 days

The month with the highest number of rainy days is December (25.5 days).
The month with the least rainy days is August (6.5 days).

Average daylight in December /
Average sunshine in December
Klangenan, 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 1min

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 12min).

Average sunshine days in December
Klangenan, Indonesia
  • Average sunshine days in December: 3.5 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is December (3.5 days).

Average UV index in December
Klangenan, 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
Klangenan, Indonesia
  • Average cloud cover in December: 47

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
Klangenan, 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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