December weather forecastSibolga, Indonesia
December weather for Sibolga, Indonesia: December has the shortest days of the year in Sibolga, Indonesia, with an average of 12h and 0min of daylight. January through December, with an average maximum UV index of 6, are months with the lowest UV index in Sibolga, Indonesia.
December
Weather in December
As the last month of the year, December maintains the cool and moist weather of the previous month. The rainfall decreases somewhat to 201mm (7.91"), creating a cooler atmosphere for holiday celebrations. The month brings along the adapter traits seen in the year-end climatic conditions of Sibolga. Season festivities in the city are accompanied by a glistening backdrop of rain-soaked environs. December wraps up the year with cloudy skies and a refreshing chill in the air, setting the stage for the incoming year.Temperature
The transition into December notes an average high-temperature of a still warm 27.5°C (81.5°F), revealing a mild distinction from the 27.3°C (81.1°F) in November. Throughout the nights in December, an average low-temperature of 22.3°C (72.1°F) is noted.Heat index
The average heat index in December is calculated to be a tropical 31°C (87.8°F). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
The average relative humidity in December in Sibolga is 83%.Rainfall
In December, the rain falls for 26.1 days. Throughout December, 201mm (7.91") of precipitation is accumulated. In Sibolga, during the entire year, the rain falls for 285.3 days and collects up to 1792mm (70.55") of precipitation.Sea temperature
In December, the average sea temperature is 29.3°C (84.7°F).Note: With water temperature from 25°C (77°F) to 29°C (84.2°F), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.
Daylight
December has the shortest days of the year in Sibolga, Indonesia, with an average of 12h and 0min of daylight.On the first day of December, sunrise is at 06:13 and sunset at 18:14. On the last day of the month, sunrise is at 06:27 and sunset at 18:28 WIB.
Sunshine
In December, the average sunshine in Sibolga is 7.5h.UV index
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. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 6 during December, leads to the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Notice! The Sun's UV exposure elevates with sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sibolga, Indonesia
- Average high temperature in December: 27.5°C
The warmest month (with the highest average high temperature) is May (28.9°C).
The month with the lowest average high temperature is November (27.3°C).
- Average low temperature in December: 22.3°C
The month with the highest average low temperature is May (22.5°C).
The coldest months (with the lowest average low temperature) are July and September (21.5°C).
Average pressure in December
Sibolga, Indonesia
- Average pressure in December: 1010.2mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is May (1009.9mbar).
Average wind speed in December
Sibolga, Indonesia
- Average wind speed in December: 4.8km/h
The windiest month (with the highest average wind speed) is June (5.6km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in December
Sibolga, Indonesia
- Average humidity in December: 83%
The month with the highest relative humidity is November (84%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in December
Sibolga, Indonesia
- Average rainfall in December: 201mm
The wettest month (with the highest rainfall) is November (259mm).
The driest month (with the least rainfall) is June (82mm).
Average rainfall days in December
Sibolga, Indonesia
- Average rainfall days in December: 26.1 days
The months with the highest number of rainy days are March and November (27.2 days).
The month with the least rainy days is June (17.2 days).
Average sea temperature in December
Sibolga, Indonesia
- Average sea temperature in December: 29.3°C
The best months for swimming (with the highest average sea temperature) are April, June and July (29.9°C).
The coldest months (with the lowest average sea temperature) are September and November (29.2°C).
Average daylight in December /
Average sunshine in December
Sibolga, 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 30min
The month with the most sunshine is June (Average sunshine: 9h and 0min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).
Average sunshine days in December
Sibolga, Indonesia
- Average sunshine days in December: 4.6 days
The month with the most sunshine days is June (11.4 days).
The month with the least sunshine days is November (1.8 days).
Average UV index in December
Sibolga, 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
Sibolga, Indonesia
- Average cloud cover in December: 50
The month with the most cloud cover is November (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 33).
Average visibility in December
Sibolga, Indonesia
- Average visibility in December: 9km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, October, November and December (9km).
