December weather forecast
Pontang, Indonesia

The first month of the summer, December, is also a hot month in Pontang, Indonesia, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 25.8°C (78.4°F).

Temperature

The transition into December is marked with an average high-temperature of a still tropical 30.4°C (86.7°F), showing an insignificant shift from November's 31.2°C (88.2°F). In Pontang, December nights maintain a consistent temperature, with an average low of 25.8°C (78.4°F).

Heat index

For most parts of December, the heat index is evaluated at a sweltering 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Pontang, the average relative humidity in December is 75%.

Rainfall

In December, the rain falls for 27.4 days. Throughout December, 129mm (5.08") of precipitation is accumulated. In Pontang, during the entire year, the rain falls for 273 days and collects up to 1266mm (49.84") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:30 and sunset at 17:57. On the last day of December, sunrise is at 05:43 and sunset at 18:12 WIB.

Sunshine

The average sunshine in December is 9h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. 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 vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during December translates into the following guidance:
Guard oneself from overexposure. Defence against sun injury is vital. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.