December weather forecast
Srengsem, Indonesia

The first month of the summer, December, is still a tropical month in Srengsem, Indonesia, with an average temperature fluctuating between 30.6°C (87.1°F) and 23.5°C (74.3°F).

Temperature

The shift from November to December is characterized by an average high-temperature of a still hot 30.6°C (87.1°F), not significantly different from the 31.1°C (88°F) of November. During the nights in December, Srengsem experiences a consistent average temperature of 23.5°C (74.3°F).

Heat index

December's heat index is estimated at a blistering 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December is 82%.

Rainfall

In December, the rain falls for 29.5 days. Throughout December, 198mm (7.8") of precipitation is accumulated. In Srengsem, during the entire year, the rain falls for 296.2 days and collects up to 1712mm (67.4") of precipitation.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:35 and sunset at 18:00. On the last day of December, sunrise is at 05:48 and sunset at 18:14 WIB.

Sunshine

The average sunshine in December is 8.5h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in December translates into this advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.