December weather forecastSepatan, Indonesia
December weather forecast for Sepatan, Indonesia: The first month of the summer, December, is still a tropical month in Sepatan, Indonesia, with temperature in the range of an average low of 26.6°C (79.9°F) and an average high of 30.4°C (86.7°F). The average heat index, which combines air temperature and relative humidity, in December is estimated at 37°C (98.6°F).
December
Weather in December
The first month of the summer, December, is still a tropical month in Sepatan, Indonesia, with temperature in the range of an average low of 26.6°C (79.9°F) and an average high of 30.4°C (86.7°F).Temperature
Sepatan, Indonesia, records an average high-temperature of a still tropical 30.4°C (86.7°F) in December, maintaining a close correlation with November's 30.8°C (87.4°F). Nighttime temperature reflects an average dip to a moderately hot 26.6°C (79.9°F) in December, subtly cooler than its daytime highs.Heat index
December's heat index is estimated at a fiery hot 37°C (98.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Heat index determinations are made taking into account the shade and light air movements. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The average relative humidity in December in Sepatan is 72%.Rainfall
In December, the rain falls for 21.5 days. Throughout December, 105mm (4.13") of precipitation is accumulated. Throughout the year, there are 256 rainfall days, and 1133mm (44.61") 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 05:29 and sunset at 17:56. On the last day of December, sunrise is at 05:42 and sunset at 18:10 WIB.
Sunshine
In Sepatan, the average sunshine in December is 9.4h.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. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 7 during December leads to these advisories:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sepatan, Indonesia
- Average high temperature in December: 30.4°C
The warmest month (with the highest average high temperature) is October (31°C).
The month with the lowest average high temperature is February (29.5°C).
- Average low temperature in December: 26.6°C
The month with the highest average low temperature is November (26.9°C).
The coldest month (with the lowest average low temperature) is July (25.4°C).
Average pressure in December
Sepatan, Indonesia
- Average pressure in December: 1009.2mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in December
Sepatan, Indonesia
- Average wind speed in December: 12.7km/h
The windiest month (with the highest average wind speed) is January (13.6km/h).
The calmest month (with the lowest average wind speed) is November (9.3km/h).
Average humidity in December
Sepatan, Indonesia
- Average humidity in December: 72%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Sepatan, Indonesia
- Average rainfall in December: 105mm
The wettest month (with the highest rainfall) is February (145mm).
The driest month (with the least rainfall) is August (40mm).
Average rainfall days in December
Sepatan, Indonesia
- Average rainfall days in December: 21.5 days
The month with the highest number of rainy days is March (25.5 days).
The month with the least rainy days is August (13.4 days).
Average daylight in December /
Average sunshine in December
Sepatan, 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 48min).
- Average sunshine in December: 9h and 24min
The month with the most sunshine is March (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in December
Sepatan, Indonesia
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is August (14.3 days).
The month with the least sunshine days is April (4 days).
Average UV index in December
Sepatan, 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
Sepatan, Indonesia
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are August and September (Cloud cover 21).
Average visibility in December
Sepatan, Indonesia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





