December weather forecastOssu, East Timor

Weather in December

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

With December's arrival, Ossu's weather records an average high-temperature of a still hot 30°C (86°F), marking little difference from November's 31.5°C (88.7°F). In Ossu, an average temperature of 24°C (75.2°F) is noted during December nights.

Heat index

During December, the heat index is evaluated at a fiery hot 38°C (100.4°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 22.3 days. Throughout December, 114mm (4.49") of precipitation is accumulated. Throughout the year, there are 157.3 rainfall days, and 660mm (25.98") of precipitation is accumulated.

Daylight

The month with the longest days is December, 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 is 7.8h.

UV index

The months with the highest UV index 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 risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.