December weather forecast
Sinaboi, Indonesia

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Weather in December

December, the first month of the winter in Sinaboi, is still a tropical month, with an average temperature varying between 25°C (77°F) and 30.5°C (86.9°F).

Temperature

December is the coldest month, with the temperature often reaching an average high of 30.5°C (86.9°F) and an average low of 25°C (77°F).

Heat index

The average heat index in December is estimated at a fiery hot 39°C (102.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'apparent temperature' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. 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 primarily vital for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

With an average relative humidity of 79%, December is the most humid month.

Rainfall

December is the month with the most rainfall in Sinaboi, Indonesia. Rain falls for 27 days and accumulates 198mm (7.8") of precipitation.

Snowfall

In Sinaboi, snow does not fall in January through August, October through December.

Daylight

December has the shortest days of the year, with an average of 12h and 0min of daylight.
On the first day of the month, sunrise is at 06:05 and sunset at 18:05. On the last day of December, in Sinaboi, sunrise is at 06:19 and sunset at 18:19 WIB.

Sunshine

With an average of 7.6h of sunshine, December has the least sunshine of the year in Sinaboi, Indonesia.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Sinaboi. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the UV index of 7 transforms into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What are the coldest months in Sinaboi?

Temperature readings in Sinaboi, Indonesia, reach their annual highs in December, averaging 30.5°C (86.9°F) and a minimum average of 25°C (77°F).

How hot is it in Sinaboi in December?

December temperatures in Sinaboi, Indonesia, vary between a high-temperature of 30.5°C (86.9°F) and a low-temperature of 25°C (77°F). In December, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 39°C (102.2°F).

What is the most humid month in Sinaboi?

December is the most humid month in Sinaboi, Indonesia, with an average relative humidity of 79%.

What is the average humidity in December in Sinaboi?

In Sinaboi, Indonesia, the average relative humidity in December is 79%.

What is the rainiest month in Sinaboi?

December is the month with the most rainfall. Rain falls for 27 days and accumulates 198mm (7.8") of precipitation.

How many days does it rain in December in Sinaboi?

In Sinaboi, during December, the rain falls for 27 days and regularly aggregates up to 198mm (7.8") of precipitation.

When it does not snow in Sinaboi?

In Sinaboi, Indonesia, snow does not fall in January through August, October through December.

What is the month with the shortest days in Sinaboi?

The month with the shortest days in Sinaboi is December, with an average of 12h and 0min of daylight.

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

In December, the average day length in Sinaboi, Indonesia, is 12h and 0min.

When is the sunrise / sunset in December in Sinaboi?

In December, on the first day of the month, sunrise is at 06:05 and sunset at 18:05. On the last day of the month, in Sinaboi, sunrise is at 06:19 and sunset at 18:19 WIB.

What is the month with the least sunshine in Sinaboi?

The month with the least sunshine in Sinaboi, Indonesia, is December, with an average of 7.6h of sunshine.

How long on average sun shines in December in Sinaboi?

In December, the average sunshine duration in Sinaboi is 7.6h.

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

The months with the highest UV index are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Sinaboi?

The months with the lowest UV index in Sinaboi, Indonesia, are January through December, with an average maximum UV index of 7.

What is the UV index reading in December in Sinaboi?

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

Average temperature in December
Sinaboi, Indonesia

Average temperature in December - Sinaboi, Indonesia
  • Average high temperature in December: 30.5°C

The warmest months (with the highest average high temperature) are April, May, August and October (32°C).
The month with the lowest average high temperature is December (30.5°C).

  • Average low temperature in December: 25°C

The month with the highest average low temperature is May (26.2°C).
The coldest months (with the lowest average low temperature) are January and February (24.6°C).

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Average pressure in December
Sinaboi, Indonesia

Average pressure in December - Sinaboi, Indonesia
  • Average pressure in December: 1009.5mbar

The month with the highest atmospheric pressure is January (1010.4mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).

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Average wind speed in December
Sinaboi, Indonesia

Average wind speed in December - Sinaboi, Indonesia
  • Average wind speed in December: 6.1km/h

The windiest months (with the highest average wind speed) are July and August (7.7km/h).
The calmest month (with the lowest average wind speed) is December (6.1km/h).

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Average humidity in December
Sinaboi, Indonesia

Average humidity in December - Sinaboi, Indonesia
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are August and September (71%).

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Average rainfall in December
Sinaboi, Indonesia

Average rainfall in December - Sinaboi, Indonesia
  • Average rainfall in December: 198mm

The wettest month (with the highest rainfall) is December (198mm).
The driest month (with the least rainfall) is July (52mm).

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Average rainfall days in December
Sinaboi, Indonesia

Average rainfall days in December - Sinaboi, Indonesia
  • Average rainfall days in December: 27 days

The month with the highest number of rainy days is November (27.3 days).
The month with the least rainy days is June (16.8 days).

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Average snowfall in December
Sinaboi, Indonesia

Average snowfall in December - Sinaboi, Indonesia
  • Average snowfall in December: 0mm

The month with the highest snowfall is September (2mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).

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Average snowfall days in December
Sinaboi, Indonesia

Average snowfall days in December - Sinaboi, Indonesia
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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

Average daylight in December / Average sunshine in December - Sinaboi, Indonesia
  • Average daylight in December: 12h and 0min

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).

  • Average sunshine in December: 7h and 4min

The months with the most sunshine are June and July (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 36min).

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Average sunshine days in December
Sinaboi, Indonesia

Average sunshine days in December - Sinaboi, Indonesia
  • Average sunshine days in December: 3.3 days

The month with the most sunshine days is June (11.3 days).
The month with the least sunshine days is November (2.4 days).

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Average UV index in December
Sinaboi, Indonesia

Average UV index in December - Sinaboi, 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).

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Average cloud cover in December
Sinaboi, Indonesia

Average cloud cover in December - Sinaboi, Indonesia
  • Average cloud cover in December: 48

The month with the most cloud cover is November (Cloud cover 50).
The months with the least cloud cover are June and July (Cloud cover 32).

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Average visibility in December
Sinaboi, Indonesia

Average visibility in December - Sinaboi, Indonesia
  • Average visibility in December: 10km

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

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Sinaboi, Indonesia

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