December weather forecast
Ubud, Indonesia

December brings the year to a close with the peak of the monsoon, recording a rainfall of 147mm (5.79"). The days become shorter, creating a relaxed and chill ambiance all around Ubud. The slight dip in temperature ensures a comfortable and pleasurable holiday season. With the wind speeds at 6.6km/h (4.1mph) and atmospheric pressure down to 1008.4mb, December allows for a calm and serene end to the year. Despite the onset of monsoons, the UV index remains steady at 7, continuing the need for sun protection.

Temperature

With the advent of December, Ubud's high-temperatures adjust to a still warm 28.7°C (83.7°F), closely aligning with the preceding month. Nights in December showcase an average temperature of 23.9°C (75°F), slightly cooler than the daytime.

Heat index

For most parts of December, the heat index is evaluated at a torrid 35°C (95°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In Ubud, the average relative humidity in December is 83%.

Rainfall

December is the month with the most rainfall. Rain falls for 26.4 days and accumulates 147mm (5.79") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of December, sunrise is at 05:50 and sunset at 18:25. On the last day of the month, sunrise is at 06:03 and sunset at 18:40 WITA.

Sunshine

In Ubud, the average sunshine in December is 8.5h.

UV index

February through April, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.