December weather forecast
Mranggen, Indonesia

The first month of the summer, December, is still a tropical month in Mranggen, Indonesia, with an average temperature varying between 30.9°C (87.6°F) and 23.6°C (74.5°F).

Temperature

With the start of December, Mranggen measures an average high-temperature of a still tropical 30.9°C (87.6°F), not significantly differing from November's 32.4°C (90.3°F). Throughout the nights in December, an average low-temperature of 23.6°C (74.5°F) is noted in Mranggen.

Heat index

The heat index value for December is calculated to be a blisteringly hot 41°C (105.8°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Mranggen, in December, it is raining for 26.1 days, with typically 157mm (6.18") of accumulated precipitation. In Mranggen, during the entire year, the rain falls for 250.9 days and collects up to 1354mm (53.31") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of December in Mranggen, sunrise is at 05:11 and sunset at 17:42. On the last day of the month, sunrise is at 05:25 and sunset at 17:56 WIB.

Sunshine

In December, the average sunshine in Mranggen is 7.9h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 7 in December leads to these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.