December weather forecast
Lumpang, Indonesia

December, the first month of the summer in Lumpang, is still a tropical month, with temperature in the range of an average low of 25.7°C (78.3°F) and an average high of 30.5°C (86.9°F).

Temperature

The advent of December sees the average high-temperature at a still hot 30.5°C (86.9°F), subtly shifted from November's 31.3°C (88.3°F). Lumpang records a slight downturn in temperature to an average of 25.7°C (78.3°F) during December nights.

Heat index

The heat index value for December is estimated at a sweltering 37°C (98.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In December, the average relative humidity is 72%.

Rainfall

In Lumpang, during December, the rain falls for 23.9 days and regularly aggregates up to 104mm (4.09") of precipitation. In Lumpang, during the entire year, the rain falls for 257.1 days and collects up to 991mm (39.02") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:28 and sunset at 17:56. On the last day of December, in Lumpang, Indonesia, sunrise is at 05:42 and sunset at 18:11 WIB.

Sunshine

The average sunshine in December is 9.4h.

UV index

The months with the highest UV index in Lumpang are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Lumpang, Indonesia. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.