December weather forecast
Ciantra, Indonesia

The first month of the summer, December, is still a hot month in Ciantra, Indonesia, with an average temperature varying between 26°C (78.8°F) and 30.8°C (87.4°F).

Temperature

The shift into December finds Ciantra at an average high-temperature of a still tropical 30.8°C (87.4°F), closely comparable to November's conditions. A slight dip in temperature to a moderately hot 26°C (78.8°F) marks the average nights during December.

Heat index

The heat index value during December is appraised at a sweltering 38°C (100.4°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In December, the average relative humidity is 72%.

Rainfall

In Ciantra, in December, during 26.7 rainfall days, 179mm (7.05") of precipitation is typically accumulated. In Ciantra, during the entire year, the rain falls for 269.9 days and collects up to 1520mm (59.84") of precipitation.

Daylight

December has the longest days of the year in Ciantra, with an average of 12h and 30min of daylight.
On the first day of December in Ciantra, sunrise is at 05:26 and sunset at 17:54. On the last day of the month, sunrise is at 05:40 and sunset at 18:09 WIB.

Sunshine

In Ciantra, the average sunshine in December is 9.2h.

UV index

The months with the highest UV index in Ciantra are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 7 in December transforms into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.