December weather forecast
Lemahwungkuk, Indonesia

The first month of the summer, December, is still a tropical month in Lemahwungkuk, Indonesia, with an average temperature varying between 25.2°C (77.4°F) and 30.2°C (86.4°F).

Temperature

The weather during December records an average high-temperature of a still hot 30.2°C (86.4°F), closely mirroring the preceding month. Consistently, Lemahwungkuk reports average nighttime temperatures of 25.2°C (77.4°F) during December, a marginal step down from its daytime highs.

Heat index

Throughout December, the heat index is computed to be a fiery hot 37°C (98.6°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Lemahwungkuk, in December, it is raining for 27.5 days, with typically 173mm (6.81") of accumulated precipitation. Throughout the year, in Lemahwungkuk, Indonesia, there are 244.1 rainfall days, and 1216mm (47.87") 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 05:20 and sunset at 17:49. On the last day of December, in Lemahwungkuk, sunrise is at 05:33 and sunset at 18:04 WIB.

Sunshine

With an average of 8.3h of sunshine, December has the least sunshine of the year.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Lemahwungkuk, Indonesia, are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.