December weather forecast
Kalianda, Indonesia

The first month of the summer, December, is still a tropical month in Kalianda, Indonesia, with an average temperature ranging between min 23.5°C (74.3°F) and max 30.6°C (87.1°F).

Temperature

December begins with an average high-temperature of a still hot 30.6°C (87.1°F), reflecting close similarity to the preceding month. Throughout the month of December, Kalianda reports a steady low-temperature average of 23.5°C (74.3°F).

Heat index

For most parts of December, the heat index is calculated to be an extremely hot 40°C (104°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Kalianda, the average relative humidity in December is 82%.

Rainfall

In Kalianda, in December, it is raining for 29.5 days, with typically 198mm (7.8") of accumulated precipitation. Throughout the year, there are 296.2 rainfall days, and 1712mm (67.4") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Kalianda, Indonesia, is 29.5°C (85.1°F).
Note: Swimming, diving, and other water-related activities in temperatures between 25°C (77°F) and 29°C (84.2°F) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

The month with the longest days is December, with an average of 12h and 24min of daylight.
On the first day of the month, sunrise is at 05:33 and sunset at 17:59. On the last day of December, sunrise is at 05:47 and sunset at 18:14 WIB.

Sunshine

In Kalianda, the average sunshine in December is 8.5h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 7 in December translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.