December weather forecastMranggen, Indonesia

Weather in December

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

Temperature

On the advent of December, Mranggen's average high-temperature exhibits a minor adjustment to a still tropical 30.9°C (87.6°F) from November's 32.4°C (90.3°F). December nights are marked by an average temperature drop to a moderately hot 23.6°C (74.5°F).

Heat index

December's mean heat index is evaluated at a blisteringly hot 41°C (105.8°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In December, the average relative humidity is 81%.

Rainfall

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

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of December, 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

The average sunshine in December is 7.9h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 7 translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.