December weather forecast
Slerok, Indonesia

The first month of the summer, December, is still a hot month in Slerok, Indonesia, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 25.5°C (77.9°F).

Temperature

The average high-temperature for December is a still hot 30.1°C (86.2°F), closely aligning with the temperature of the preceding month. Slerok observes a minimal variance in temperature, with a consistent average low of 25.5°C (77.9°F) during the nights of December.

Heat index

In December, the heat index is evaluated at a torrid 37°C (98.6°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold great significance to 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.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In December, the average relative humidity is 75%.

Rainfall

In December, the rain falls for 25.8 days. Throughout December, 141mm (5.55") of precipitation is accumulated. In Slerok, during the entire year, the rain falls for 234.4 days and collects up to 1075mm (42.32") 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 05:17 and sunset at 17:47. On the last day of December, in Slerok, sunrise is at 05:30 and sunset at 18:02 WIB.

Sunshine

With an average of 8.2h 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 estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.