December weather forecast
Balikpapan, Indonesia

The year rounds off with December charting the highest rainfall at 206mm (8.11"). As December rolls in, Balikpapan embraces a more rainy ambiance, in line with the scenario of the year's start. Despite being the peak of monsoon, the city retains its charm with uniform temperatures. Residents and visitors alike find solace in indoor activities during this month. The city views, washed clean by frequent downpours, provide a grand spectacle to behold.

Temperature

The transition from November to December brings an average high-temperature of a still hot 30.3°C (86.5°F), barely different from November's 30.5°C (86.9°F). December nights reflect a consistent temperature dip to a moderately hot 25.5°C (77.9°F), a slight descent from daytime peaks.

Heat index

December's heat index is computed to be a very hot 38°C (100.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 vital to children. 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.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In December, the average relative humidity in Balikpapan is 79%.

Rainfall

The month with the most rainfall is December, when the rain falls for 30 days and typically aggregates up to 206mm (8.11") of precipitation.

Sea temperature

In Balikpapan, the average seawater temperature in December is 29.2°C (84.6°F).
Note: Water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

December has the longest days of the year, with an average of 12h and 12min of daylight.
On the first day of the month, sunrise is at 05:56 and sunset at 18:07. On the last day of December, sunrise is at 06:09 and sunset at 18:21 WITA.

Sunshine

In December, the average sunshine in Balikpapan is 8.3h.

UV index

The months with the highest UV index in Balikpapan are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Balikpapan are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The Sun's UV intensity grows with reflections off sand and water.