December weather forecast
Indonesia

December in Indonesia marks the peak of the wet season, characterized by high rainfall across most of the country. Despite this, the average temperature remains steady, typically ranging from 23°C (73.4°F) to 28°C (82.4°F). Higher altitude regions such as the mountainous areas of Java and the highlands of Papua often experience slightly cooler temperatures.

When considering rainfall, December is one of the wettest months of the year. Jakarta, for instance, generally receives about 180mm (7.09") of rain, while Bali also experiences high rainfall, averaging 170mm (6.69"). These figures indicate that December is indeed a month of significant rainfall, marking the peak of the wet season.

Comparing December to November, there is a further increase in rainfall. Looking ahead to January, the heavy rainfall generally continues, making the transition between these months less noticeable than in other seasons.

Travelers to Indonesia in December should be prepared for frequent rain, which is often heaviest in the afternoon and evening. While the high rainfall can lead to challenges such as localized flooding and landslides, especially in susceptible areas, it also results in incredibly lush and vibrant landscapes. The higher rainfall also tends to result in fewer tourists, offering travelers a more exclusive experience of Indonesia's natural and cultural wonders. However, it's crucial to stay informed about local weather conditions and take necessary precautions while traveling during this period.

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• Jakarta - December »
  In Jakarta, in December, during 23.9 rainfall days, 123mm (4.84") of precipitation is typically accumulated. In Jakarta, in December, during 23.9 rainfall days, 123mm (4.84") of precipitation is typically accumulated.
• Surabaya - December »
  December is the month with the warmest seawater in Surabaya, with an average sea temperature of 30.2°C (86.4°F). In Surabaya in December, the average water temperature is 30.2°C (86.4°F).
• Bandung - December »
  December has the longest days of the year in Bandung with an average of 12h and 30min of daylight. Concluding the year, December's weather in Bandung is characterized by a high rainfall of 255mm (10.04"), thus maintaining the essence of a tropical monsoon climate.
• Medan - December »
  The most humid month in Medan is December, with an average relative humidity of 81%. The month with the shortest days in Medan is December, with an average of 11h and 54min of daylight.
• Bekasi - December »
  The month with the longest days in Bekasi is December, with an average of 12h and 30min of daylight. The months with the lowest UV index in Bekasi are January through December, with an average maximum UV index of 7.
• Palembang - December »
  In Palembang in December, it is raining for 26.5 days, with typically 145mm (5.71") of accumulated precipitation. The months of January, February and December see the lowest levels of Palembang's temperatures, averaging a high of 31.1°C (88°F).
• Tangerang - December »
  As the year ends, December stands testimony to Tangerang's consistent weather, reflecting an equilibrium of rainfall, humidity, and temperature. In Tangerang in December, during 24.9 rainfall days, 128mm (5.04") of precipitation is typically accumulated.
• Makassar - December »
  December is the month with the warmest seawater in Makassar, with an average sea temperature of 30.3°C (86.5°F). The month with the longest days in Makassar is December, with an average of 12h and 24min of daylight.
• Semarang - December »
  December is the month with the warmest seawater in Semarang with an average sea temperature of 30.3°C (86.5°F). December in Semarang marks the peak of the rainy season, rain makes a strong presence throughout the month and humidity levels remain high.
• Depok - December »
  The month with the longest days in Depok is December, with an average of 12h and 30min of daylight. In Depok in December, during 27.5 rainfall days, 172mm (6.77") of precipitation is typically accumulated.
• Batam - December »
  The month with the most rainfall in Batam is December, when the rain falls for 26.4 days and typically aggregates up to 220mm (8.66") of precipitation. The months with the highest UV index in Batam, Indonesia, are January through December, with an average maximum UV index of 7.
• Pekanbaru - December »
  With an average of 12h and 6min of daylight, December has the shortest days of the year in Pekanbaru. December has the shortest days of the year in Pekanbaru, with an average of 12h and 6min of daylight.