December weather forecast
Serpong, Indonesia

December, the first month of the summer in Serpong, is still a tropical month, with an average temperature varying between 30.5°C (86.9°F) and 25.7°C (78.3°F).

Temperature

Entering December, the average high-temperature is recorded at a still hot 30.5°C (86.9°F), exhibiting a minimal shift from November's 31.3°C (88.3°F). Serpong's December nights exhibit a subtle drop in temperature, averaging at a warm 25.7°C (78.3°F), closely aligned with the daytime highs.

Heat index

Throughout December, the heat index is estimated at a fiery hot 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In December, the average relative humidity in Serpong is 72%.

Rainfall

In Serpong, during December, the rain falls for 23.9 days and regularly aggregates up to 104mm (4.09") of precipitation. In Serpong, Indonesia, during the entire year, the rain falls for 257.1 days and collects up to 991mm (39.02") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 17:56. On the last day of December, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

The average sunshine in December in Serpong is 9.4h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Serpong. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Serpong, Indonesia. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 7 suggests these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.