December weather forecast
Sendangguwo, Indonesia

The first month of the summer, December, is also a hot month in Sendangguwo, Indonesia, with an average temperature ranging between max 31°C (87.8°F) and min 25.1°C (77.2°F).

Temperature

The onset of December brings with it an average high-temperature of a still hot 31°C (87.8°F), showing a negligible variation from the month before. Sendangguwo observes an average nighttime low-temperature of 25.1°C (77.2°F) during the month of December.

Heat index

The heat index value for December is appraised at a scorching 40°C (104°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Sendangguwo, during December, the rain falls for 24.8 days and regularly aggregates up to 128mm (5.04") of precipitation. Throughout the year, there are 226.7 rainfall days, and 1000mm (39.37") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:12 and sunset at 17:42. On the last day of the month, sunrise is at 05:25 and sunset at 17:57 WIB.

Sunshine

With an average of 8.2h of sunshine, December has the least sunshine of the year.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.