December weather forecast
Sarajaya, Indonesia

December, the first month of the summer in Sarajaya, is still a hot month, with temperature in the range of an average low of 25.2°C (77.4°F) and an average high of 30.2°C (86.4°F).

Temperature

The arrival of December denotes a barely perceptible change in the average high-temperatures to a still hot 30.2°C (86.4°F) from November's 30.9°C (87.6°F). Sarajaya observes a minimal variance in temperature, with a consistent average low of 25.2°C (77.4°F) during the nights of December.

Heat index

December's heat index is estimated at a torrid 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Sarajaya, the average relative humidity in December is 76%.

Rainfall

In Sarajaya, in December, it is raining for 27.5 days, with typically 173mm (6.81") of accumulated precipitation. Throughout the year, there are 244.1 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:19 and sunset at 17:49. On the last day of the month, sunrise is at 05:33 and sunset at 18:03 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 are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.