December weather forecast
Temperak, Indonesia

The first month of the summer, December, is still a hot month in Temperak, Indonesia, with an average temperature ranging between min 23.8°C (74.8°F) and max 30.7°C (87.3°F).

Temperature

The transition from November to December sees an average high-temperature of a still tropical 30.7°C (87.3°F), indicating a minor variance from the prior month. An average nighttime temperature of 23.8°C (74.8°F) is witnessed in Temperak throughout December.

Heat index

December's average heat index is estimated at a scorching 41°C (105.8°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In December, the average relative humidity is 83%.

Rainfall

In Temperak, Indonesia, during December, the rain falls for 28.7 days and regularly aggregates up to 243mm (9.57") of precipitation. Throughout the year, there are 256 rainfall days, and 1649mm (64.92") of precipitation is accumulated.

Sea temperature

The month with the warmest seawater is December, with an average sea temperature of 30.2°C (86.4°F).
Note: The surface water temperatures above 30°C (86°F) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

Daylight

The month with the longest days in Temperak is December, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:07 and sunset at 17:36. On the last day of the month, sunrise is at 05:21 and sunset at 17:51 WIB.

Sunshine

The average sunshine in December is 7.2h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index in Temperak. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during December translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.