December weather forecast
Biru, Indonesia

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Weather in December

December, the first month of the summer in Biru, is still a warm month, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 28.4°C (83.1°F).

Temperature

The initiation of December records an average high-temperature of a still moderately hot 28.4°C (83.1°F), displaying a near consistency with the previous month. The average nighttime temperature lowers to an agreeable 21.8°C (71.2°F) throughout December.

Heat index

For December, the heat index is evaluated at a hot 33°C (91.4°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. 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. 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 highly critical to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

In December, the average relative humidity is 82%.

Rainfall

In Biru, during December, the rain falls for 29.5 days and regularly aggregates up to 228mm (8.98") of precipitation. In Biru, during the entire year, the rain falls for 304.3 days and collects up to 2093mm (82.4") of precipitation.

Daylight

December has the longest days of the year in Biru, with an average of 12h and 30min of daylight.
On the first day of December in Biru, sunrise is at 05:23 and sunset at 17:53. On the last day of the month, sunrise is at 05:36 and sunset at 18:07 WIB.

Sunshine

In Biru, the average sunshine in December is 8.2h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Frequently asked questions

How hot is it in Biru in December?

The high-temperature in Biru, Indonesia, during December is 28.4°C (83.1°F) and the low-temperature is 21.8°C (71.2°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in December is evaluated at 33°C (91.4°F).

What is the average humidity in December in Biru?

The average relative humidity in December is 82%.

How much does it rain in Biru in December?

In Biru, in December, it is raining for 29.5 days, with typically 228mm (8.98") of accumulated precipitation.

When are the longest days in Biru?

The month with the longest days in Biru, Indonesia, is December, with an average of 12h and 30min of daylight.

What is the average length of the day in December in Biru?

In December, the average day length in Biru is 12h and 32min.

When is the sunrise / sunset in December in Biru?

On the first day of December in Biru, Indonesia, sunrise is at 05:23 and sunset at 17:53. On the last day of the month, sunrise is at 05:36 and sunset at 18:07 WIB.

How many hours of sunshine does Biru have in December?

In December, the average sunshine duration in Biru, Indonesia, is 8.2h.

What are the months with the highest UV index in Biru?

The months with the highest UV index in Biru are January through December, with an average maximum UV index of 6.

What is the month with the lowest UV index in Biru?

January through December, with an average maximum UV index of 6, are months with the lowest UV index in Biru.

How high is the UV index in December in Biru?

The average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Biru, Indonesia

Average temperature in December - Biru, Indonesia
  • Average high temperature in December: 28.4°C

The warmest month (with the highest average high temperature) is October (28.9°C).
The month with the lowest average high temperature is July (27°C).

  • Average low temperature in December: 21.8°C

The months with the highest average low temperature are January and December (21.8°C).
The coldest month (with the lowest average low temperature) is August (19.2°C).

Average pressure in December
Biru, Indonesia

Average pressure in December - Biru, Indonesia
  • Average pressure in December: 1009.4mbar

The month with the highest atmospheric pressure is September (1011.7mbar).
The month with the lowest atmospheric pressure is December (1009.4mbar).

Average wind speed in December
Biru, Indonesia

Average wind speed in December - Biru, Indonesia
  • Average wind speed in December: 4.5km/h

The windiest month (with the highest average wind speed) is September (6.7km/h).
The calmest month (with the lowest average wind speed) is February (4.1km/h).

Average humidity in December
Biru, Indonesia

Average humidity in December - Biru, Indonesia
  • Average humidity in December: 82%

The months with the highest relative humidity are May, June and July (86%).
The months with the lowest relative humidity are September and October (81%).

Average rainfall in December
Biru, Indonesia

Average rainfall in December - Biru, Indonesia
  • Average rainfall in December: 228mm

The wettest month (with the highest rainfall) is March (310mm).
The driest month (with the least rainfall) is August (30mm).

Average rainfall days in December
Biru, Indonesia

Average rainfall days in December - Biru, Indonesia
  • Average rainfall days in December: 29.5 days

The month with the highest number of rainy days is March (30.6 days).
The month with the least rainy days is August (16.4 days).

Average daylight in December /
Average sunshine in December
Biru, Indonesia

Average daylight in December / Average sunshine in December - Biru, 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 month with the most sunshine is October (Average sunshine: 8h and 48min).
The month with the least sunshine is July (Average sunshine: 6h and 18min).

Average sunshine days in December
Biru, Indonesia

Average sunshine days in December - Biru, Indonesia
  • Average sunshine days in December: 0.4 days

The month with the most sunshine days is August (10.8 days).
The months with the least sunshine days are February and March (0.2 days).

Average UV index in December
Biru, Indonesia

Average UV index in December - Biru, Indonesia
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in December
Biru, Indonesia

Average cloud cover in December - Biru, Indonesia
  • Average cloud cover in December: 49

The months with the most cloud cover are January and February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 42).

Average visibility in December
Biru, Indonesia

Average visibility in December - Biru, Indonesia
  • Average visibility in December: 9km

The months with the highest visibility are January and December (9km).
The month with the lowest visibility is July (7km).

Biru, Indonesia

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