December weather forecast
Ossu, East Timor

December marks the wrap up of the year, returning to the conditions experienced in the initial few months. A substantial increase in rainfall levels to 114mm (4.49") denotes the continuation of the wet season. With increases in humidity and cloud formations, the number of sunshine hours sees a decrease. The wind speed drops to a record-breaking low of 5.8km/h (3.6mph), contributing to stable weather conditions. Despite the increased rainfall, the warm and pleasant climate of Ossu, East Timor is maintained.

Temperature

Ossu transitions into December recording an average high-temperature of a still tropical 30°C (86°F), closely aligning with the preceding month's temperature. Ossu, during December nights, observes an average temperature of 24°C (75.2°F).

Heat index

In December, the heat index is appraised at a very hot 38°C (100.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in December is 81%.

Rainfall

In Ossu, during December, the rain falls for 22.3 days and regularly aggregates up to 114mm (4.49") of precipitation. In Ossu, during the entire year, the rain falls for 157.3 days and collects up to 660mm (25.98") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of December, sunrise is at 06:05 and sunset at 18:41. On the last day of the month, sunrise is at 06:18 and sunset at 18:56 +09.

Sunshine

The average sunshine in December in Ossu, East Timor, is 7.8h.

UV index

The months with the highest UV index in Ossu are January through March, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.