December weather forecast
Sondakan, Indonesia

The first month of the summer, December, is still a warm month in Sondakan, Indonesia, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 22.1°C (71.8°F).

Temperature

As Sondakan welcomes December, the average high-temperature is noted at a still moderately hot 28.9°C (84°F), closely aligning with the preceding month. Nighttime temperatures in Sondakan consistently average an agreeable 22.1°C (71.8°F) during December.

Heat index

For December, the heat index is estimated at a fiery hot 35°C (95°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Sondakan, Indonesia, the average relative humidity in December is 83%.

Rainfall

In Sondakan, during December, the rain falls for 29 days and regularly aggregates up to 230mm (9.06") of precipitation. In Sondakan, during the entire year, the rain falls for 276.6 days and collects up to 2049mm (80.67") of precipitation.

Daylight

The month with the longest days in Sondakan, Indonesia, is December, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:09 and sunset at 17:41. On the last day of December, in Sondakan, sunrise is at 05:23 and sunset at 17:56 WIB.

Sunshine

The months with the least sunshine are January and December, with an average of 7h of sunshine.

UV index

January through August, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Sondakan. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.