December weather forecastGrogol, Indonesia
December
Weather in December
December, the first month of the summer in Grogol, is still a hot month, with temperature in the range of an average high of 30.6°C (87.1°F) and an average low of 26°C (78.8°F).Temperature
Grogol notes an average high-temperature of a still tropical 30.6°C (87.1°F) in December, displaying minor variation from November. Grogol's December nights exhibit a subtle drop in temperature, averaging at a warm 26°C (78.8°F), closely aligned with the daytime highs.Heat index
During December, the heat index is evaluated at a fiery hot 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.The standards for the heat index are set for locations in shade and under light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. 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.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In December, the average relative humidity in Grogol, Indonesia, is 71%.Rainfall
In December, in Grogol, the rain falls for 23.9 days. Throughout December, 123mm (4.84") of precipitation is accumulated. In Grogol, Indonesia, during the entire year, the rain falls for 252 days and collects up to 1150mm (45.28") of precipitation.Daylight
With an average of 12h and 30min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 05:28 and sunset at 17:55. On the last day of December, in Grogol, sunrise is at 05:41 and sunset at 18:10 WIB.
Sunshine
The average sunshine in December is 9.3h.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 value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 7 in December suggests the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grogol, Indonesia
- Average high temperature in December: 30.6°C
The warmest month (with the highest average high temperature) is October (31.8°C).
The months with the lowest average high temperature are January and February (29.8°C).
- Average low temperature in December: 26°C
The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.7°C).
Average pressure in December
Grogol, Indonesia
- Average pressure in December: 1009.2mbar
The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in December
Grogol, Indonesia
- Average wind speed in December: 10.8km/h
The windiest month (with the highest average wind speed) is January (12.4km/h).
The calmest month (with the lowest average wind speed) is November (8.1km/h).
Average humidity in December
Grogol, Indonesia
- Average humidity in December: 71%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Grogol, Indonesia
- Average rainfall in December: 123mm
The wettest month (with the highest rainfall) is March (144mm).
The driest month (with the least rainfall) is August (35mm).
Average rainfall days in December
Grogol, Indonesia
- Average rainfall days in December: 23.9 days
The month with the highest number of rainy days is March (26.1 days).
The month with the least rainy days is August (11.6 days).
Average daylight in December /
Average sunshine in December
Grogol, 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 18min
The month with the most sunshine is March (Average sunshine: 10h and 12min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in December
Grogol, Indonesia
- Average sunshine days in December: 5.7 days
The month with the most sunshine days is August (16 days).
The month with the least sunshine days is February (2.6 days).
Average UV index in December
Grogol, 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
Grogol, Indonesia
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Grogol, 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).





