December weather forecastBelawan, Indonesia
December
Weather in December
December, the first month of the winter in Belawan, is also a moderately hot month, with an average temperature fluctuating between 24.5°C (76.1°F) and 29.7°C (85.5°F).Temperature
December stands out as Belawan's coldest month, with temperatures ranging between an average high of 29.7°C (85.5°F) and a low of 24.5°C (76.1°F).Heat index
December's mean heat index is estimated at a sweltering 37°C (98.6°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In Belawan, in December, during 27.6 rainfall days, 150mm (5.91") of precipitation is typically accumulated. Throughout the year, there are 317.8 rainfall days, and 1437mm (56.57") of precipitation is accumulated.Sea temperature
In December, the average sea temperature in Belawan is 29.1°C (84.4°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.
Daylight
December has the shortest days of the year, with an average of 11h and 54min of daylight.On the first day of December, sunrise is at 06:16 and sunset at 18:11. On the last day of the month, sunrise is at 06:31 and sunset at 18:25 WIB.
Sunshine
November and December, with an average of 8h of sunshine, are months with the least sunshine.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 7 during December, leads to the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Belawan, Indonesia
- Average high temperature in December: 29.7°C
The warmest months (with the highest average high temperature) are May and June (31.9°C).
The month with the lowest average high temperature is December (29.7°C).
- Average low temperature in December: 24.5°C
The month with the highest average low temperature is April (25.6°C).
The coldest month (with the lowest average low temperature) is January (24.1°C).
Average pressure in December
Belawan, Indonesia
- Average pressure in December: 1010.2mbar
The month with the highest atmospheric pressure is January (1010.9mbar).
The month with the lowest atmospheric pressure is May (1009.5mbar).
Average wind speed in December
Belawan, Indonesia
- Average wind speed in December: 7.6km/h
The windiest month (with the highest average wind speed) is February (7.8km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).
Average humidity in December
Belawan, Indonesia
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are March, June, July and August (75%).
Average rainfall in December
Belawan, Indonesia
- Average rainfall in December: 150mm
The wettest month (with the highest rainfall) is October (158mm).
The driest month (with the least rainfall) is February (88mm).
Average rainfall days in December
Belawan, Indonesia
- Average rainfall days in December: 27.6 days
The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is February (21.3 days).
Average sea temperature in December
Belawan, Indonesia
- Average sea temperature in December: 29.1°C
The best month for swimming (with the highest average sea temperature) is May (30.2°C).
The coldest month (with the lowest average sea temperature) is January (28.8°C).
Average daylight in December /
Average sunshine in December
Belawan, Indonesia
- Average daylight in December: 11h and 54min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in December: 8h and 0min
The month with the most sunshine is June (Average sunshine: 9h and 18min).
The months with the least sunshine are November and December (Average sunshine: 8h and 0min).
Average sunshine days in December
Belawan, Indonesia
- Average sunshine days in December: 2.2 days
The months with the most sunshine days are January and February (5 days).
The month with the least sunshine days is April (0.9 days).
Average UV index in December
Belawan, 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).
Average cloud cover in December
Belawan, Indonesia
- Average cloud cover in December: 45
The month with the most cloud cover is November (Cloud cover 47).
The months with the least cloud cover are March and June (Cloud cover 31).
Average visibility in December
Belawan, 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).
