December weather forecast
Papua New Guinea

December in Papua New Guinea marks the peak of the wet season with rainfall reaching its maximum for the year. Despite the significant increase in precipitation, temperatures continue to remain consistent, typically ranging from 25°C (77°F) to 30°C (86°F), reflecting the country's tropical climate.

In coastal regions such as Port Moresby and Lae, the rainfall during December is intense, often resulting in heavy downpours. The increased cloud cover reduces the number of sunshine hours, although the temperature remains relatively high, owing to the tropical climate of the region.

The highlands, including cities like Goroka and Mount Hagen, also experience heavy rainfall during December. Despite the increased precipitation and cloud cover, the nighttime temperatures in these regions are somewhat cooler due to their higher altitudes, providing a counterpoint to the warm daytime temperatures.

Looking ahead to January, the high rainfall trend continues across Papua New Guinea as the wet season persists. The temperatures remain steady within the typical tropical range of 25°C (77°F) to 30°C (86°F), thus continuing the warm and humid conditions that are characteristic of Papua New Guinea's climate.

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• Port Moresby - December »
  With an average of 12h and 42min of daylight, December has the longest days of the year in Port Moresby, Papua New Guinea. On the first day of December in Port Moresby sunrise is at 05:41 and sunset at 18:18.
• Lae - December »
  With an average sea temperature of 30°C (86°F), December is the month with the warmest seawater in Lae, Papua New Guinea. The month with the least rainfall in Lae is December, when the rain falls for 24.3 days and typically collects 101mm (3.98") of precipitation.
• Mount Hagen - December »
  The months with the highest UV index in Mount Hagen are January through May, July through December, with an average maximum UV index of 12. Mount Hagen sees the average highest temperatures during the months of October through December, peaking at 30°C (86°F).
• Madang - December »
  December has the longest days of the year in Madang with an average of 12h and 24min of daylight. In Madang in December, it is raining for 23 days, with typically 382mm (15.04") of accumulated precipitation.
• Wewak - December »
  The month with the most rainfall in Wewak is December, when the rain falls for 29.2 days and typically aggregates up to 258mm (10.16") of precipitation. In Wewak in December, it is raining for 29.2 days, with typically 258mm (10.16") of accumulated precipitation.
• Goroka - December »
  January, February, June, September through December, with an average of 5h of sunshine, are months with the most sunshine in Goroka, Papua New Guinea. The months with the highest UV index in Goroka are January through May, July through December, with an average maximum UV index of 12.
• Kokopo - December »
  In Kokopo, during December, the rain falls for 26.8 days and regularly aggregates up to 172mm (6.77") of precipitation. In Kokopo, during December, the rain falls for 26.8 days and regularly aggregates up to 172mm (6.77") of precipitation.
• Mendi - December »
  The month with the longest days in Mendi is December, with an average of 12h and 30min of daylight. Typically, December rounds up the year in Mendi with warm weather, extended daylight, and generous rainfall.
• Kimbe - December »
  The month with the warmest seawater in Kimbe is December, with an average sea temperature of 30.3°C (86.5°F). The month with the warmest seawater in Kimbe, Papua New Guinea, is December, with an average sea temperature of 30.3°C (86.5°F).
• Arawa - December »
  The months with the highest UV index in Arawa, Papua New Guinea, are January, February, September through December, with an average maximum UV index of 6. In Arawa in December, during 29.2 rainfall days, 403mm (15.87") of precipitation is typically accumulated.
• Vanimo - December »
  The month with the most rainfall in Vanimo is December, when the rain falls for 26.8 days and typically aggregates up to 219mm (8.62") of precipitation. In Vanimo, during December, the rain falls for 26.8 days and regularly aggregates up to 219mm (8.62") of precipitation.