December weather forecast
Kopeng, Indonesia

December, the first month of the summer in Kopeng, is also a moderately hot month, with an average temperature varying between 28.7°C (83.7°F) and 22.1°C (71.8°F).

Temperature

December's onset records a minor alteration in the average high-temperature to a still warm 28.7°C (83.7°F) from November's 29.1°C (84.4°F). Kopeng, during the month of December, experiences an average low-temperature of 22.1°C (71.8°F).

Heat index

The heat index in December is evaluated at a fiery hot 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in December is 84%.

Rainfall

In Kopeng, in December, it is raining for 29.5 days, with typically 219mm (8.62") of accumulated precipitation. Throughout the year, there are 290.8 rainfall days, and 2049mm (80.67") 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 December, sunrise is at 05:11 and sunset at 17:43. On the last day of the month, sunrise is at 05:24 and sunset at 17:57 WIB.

Sunshine

With an average of 7.1h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.