December weather forecast
Senen, Indonesia

December, the first month of the summer in Senen, is still a tropical month, with temperature in the range of an average low of 26°C (78.8°F) and an average high of 30.6°C (87.1°F).

Temperature

Senen records a slight change with December's average high-temperatures adjusting to a still tropical 30.6°C (87.1°F) from November's 31.5°C (88.7°F). Nighttime readings in Senen during December register a minimal drop from daytime highs, averaging at a warm 26°C (78.8°F).

Heat index

The average heat index in December is calculated to be a torrid 37°C (98.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. 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 hold great significance to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In December, the average relative humidity in Senen, Indonesia, is 71%.

Rainfall

In December, in Senen, the rain falls for 23.9 days. Throughout December, 123mm (4.84") of precipitation is accumulated. Throughout the year, in Senen, there are 252 rainfall days, and 1150mm (45.28") of precipitation is accumulated.

Daylight

December has the longest days of the year in Senen, Indonesia, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:27 and sunset at 17:55. On the last day of December, in Senen, Indonesia, sunrise is at 05:41 and sunset at 18:10 WIB.

Sunshine

In Senen, the average sunshine in December is 9.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Senen, Indonesia. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.