December weather forecast
Pontianak, Indonesia

December in Pontianak closes the year on a decidedly moist note. The modified sea temperature of 29.4°C (84.9°F) adds a pleasant element to the coastal activities. Rainfall settles into a rhythm similar to the onset of the calendar year, resulting in recurring showers. The cloudy overcast consolidates its hold across the horizons, shielding the sunlight just a tad more. High temperatures, while still warm, continue on a downward slope ending at 30.7°C (87.3°F), bringing the climatic cycle full circle.

Temperature

December brings an average high-temperature of a still hot 30.7°C (87.3°F), showing a slight difference from November's 31.2°C (88.2°F). Throughout the nights in December, an average low-temperature of 24.1°C (75.4°F) is noted.

Heat index

Throughout December, the heat index is appraised at a blistering 41°C (105.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
When referencing the heat index, its values are suitable for shady environments and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Pontianak, in December, it is raining for 25 days, with typically 147mm (5.79") of accumulated precipitation. In Pontianak, during the entire year, the rain falls for 282.2 days and collects up to 1495mm (58.86") of precipitation.

Sea temperature

In December, the average sea temperature is 29.4°C (84.9°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

The month with the longest days in Pontianak is December, with an average of 12h and 6min of daylight.
On the first day of December, sunrise is at 05:27 and sunset at 17:35. On the last day of the month, sunrise is at 05:41 and sunset at 17:49 WIB.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

UV index

The months with the highest UV index in Pontianak, Indonesia, 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 Pontianak. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! Sand and water reflections contribute to a stronger UV exposure.