December weather forecast
Sipak, Indonesia

December

Weather in December

December, the first month of the summer in Sipak, is also a hot month, with temperature in the range of an average low of 24.6°C (76.3°F) and an average high of 30.4°C (86.7°F).

Temperature

December's average high-temperature stands at a still hot 30.4°C (86.7°F), showing little deviation from November's 31.2°C (88.2°F). Sipak's nights in December cool down to an average low-temperature of 24.6°C (76.3°F).

Heat index

The average heat index in December is computed to be a very hot 38°C (100.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Sipak, the average relative humidity in December is 77%.

Rainfall

In Sipak, during December, the rain falls for 27.5 days and regularly aggregates up to 156mm (6.14") of precipitation. Throughout the year, there are 291.3 rainfall days, and 1460mm (57.48") 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 17:57. On the last day of December, in Sipak, sunrise is at 05:42 and sunset at 18:11 WIB.

Sunshine

The average sunshine in December in Sipak is 9.1h.

UV index

The months with the highest UV index in Sipak, Indonesia, are February through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 during December leads to these advisories:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

Is it hot in Sipak during December?
In Sipak, 30.4°C (86.7°F) is the average high-temperature and 24.6°C (76.3°F) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in December is computed to be 38°C (100.4°F).
What is the average humidity in December in Sipak?
In Sipak, the average relative humidity in December is 77%.
How much does it rain in Sipak in December?
In December, the rain falls for 27.5 days. Throughout December, 156mm (6.14") of precipitation is accumulated.
When are the longest days in Sipak?
The month with the longest days in Sipak is December, with an average of 12h and 30min of daylight.
What is the average length of the day in December in Sipak?
The average day length in December is 12h and 29min.
When are sunrise and sunset in December in Sipak?
On the first day of December, sunrise is at 05:28 and sunset at 17:57. 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 in Sipak?
In Sipak, Indonesia, the average sunshine duration in December is 9.1h.
What is the month with the highest UV index in Sipak?
The months with the highest UV index are February through December, with an average maximum UV index of 7.
What is the UV index reading in December in Sipak?
In December, the average daily maximum UV index in Sipak, Indonesia, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to 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 - Sipak, Indonesia
Average temperature in December
Sipak, Indonesia
  • Average high temperature in December: 30.4°C

The warmest month (with the highest average high temperature) is October (32.1°C).
The month with the lowest average high temperature is January (29.8°C).

  • Average low temperature in December: 24.6°C

The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is August (23.1°C).

Average pressure in December - Sipak, Indonesia
Average pressure in December
Sipak, Indonesia
  • Average pressure in December: 1009.3mbar

The month with the highest atmospheric pressure is September (1011.2mbar).
The month with the lowest atmospheric pressure is December (1009.3mbar).

Average wind speed in December - Sipak, Indonesia
Average wind speed in December
Sipak, Indonesia
  • Average wind speed in December: 9km/h

The windiest month (with the highest average wind speed) is January (9.4km/h).
The calmest month (with the lowest average wind speed) is August (5km/h).

Average humidity in December - Sipak, Indonesia
Average humidity in December
Sipak, Indonesia
  • Average humidity in December: 77%

The months with the highest relative humidity are February and March (80%).
The months with the lowest relative humidity are September and October (71%).

Average rainfall in December - Sipak, Indonesia
Average rainfall in December
Sipak, Indonesia
  • Average rainfall in December: 156mm

The wettest month (with the highest rainfall) is March (189mm).
The driest month (with the least rainfall) is August (45mm).

Average rainfall days in December - Sipak, Indonesia
Average rainfall days in December
Sipak, Indonesia
  • Average rainfall days in December: 27.5 days

The month with the highest number of rainy days is January (29.4 days).
The month with the least rainy days is August (14.3 days).

Average daylight in December / Average sunshine in December - Sipak, Indonesia
Average daylight in December /
Average sunshine in December
Sipak, 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 1min

The month with the most sunshine is September (Average sunshine: 9h and 18min).
The months with the least sunshine are June and July (Average sunshine: 7h and 0min).

Average sunshine days in December - Sipak, Indonesia
Average sunshine days in December
Sipak, Indonesia
  • Average sunshine days in December: 1.8 days

The month with the most sunshine days is August (14 days).
The month with the least sunshine days is February (0.7 days).

Average UV index in December - Sipak, Indonesia
Average UV index in December
Sipak, Indonesia
  • Average UV index in December: 7

The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

Average cloud cover in December - Sipak, Indonesia
Average cloud cover in December
Sipak, Indonesia
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

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

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

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