December weather forecast
Grogol, Indonesia

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.