December weather forecastBiru, Indonesia

December

Weather in December

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

Temperature

The advent of December brings an average high-temperature of a still warm 28.4°C (83.1°F), exhibiting minor difference from the previous month. Biru's average low-temperature in December is measured at an agreeable 21.8°C (71.2°F).

Heat index

In December, the average heat index is computed to be a tropical 33°C (91.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Biru, the average relative humidity in December is 82%.

Rainfall

In Biru, in December, during 29.5 rainfall days, 228mm (8.98") of precipitation is typically accumulated. Throughout the year, there are 304.3 rainfall days, and 2093mm (82.4") of precipitation is accumulated.

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 05:23 and sunset at 17:53. On the last day of December, 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 threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Updated: Aug 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In December, in Biru, the average high-temperature is 28.4°C (83.1°F), and the average low-temperature is 21.8°C (71.2°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in December is computed to be 33°C (91.4°F).

The average relative humidity in December in Biru is 82%.

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

December has the longest days of the year, with an average of 12h and 30min of daylight.

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

On the first day of December, 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.

The average sunshine duration in December in Biru is 8.2h.

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

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

The average daily maximum UV index in December in Biru is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

28.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.8km/h

5.2km/h

4.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

0.6

0.4

Average UV index

Average cloud cover

Average visibility

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: 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: 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: 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: 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: 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: 12h and 30min

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 12min

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: 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: 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).