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December Weather in Mendi, Papua New Guinea

Last updated: August 31, 2025

In December, the average temperature in Mendi, Papua New Guinea hovers around 17°C (63°F), providing a mild climate. Expect temperatures to range from a cool 11°C (52°F) at the minimum to a comfortable 26°C (79°F) at the maximum. However, be prepared for substantial rainfall, with an average precipitation of 429 mm (16.9 in) spread over 29 days, and a high average humidity of 90%.

December Temperature in Mendi

In December, in Mendi, the average temperature is 17°C (63°F). The maximum can reach 26°C (79°F), while the minimum can drop as low as 11°C (52°F). This mild weather makes Mendi a great destination for travelers looking to enjoy pleasant outdoor activities.

December Weather in Mendi: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Mendi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendi, December typically has an average temperature of 17°C (63°F), with highs reaching up to 26°C (79°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec636262636361616161626363
Data source: Temperature data for Mendi generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Mendi

In Mendi in December, the precipitation amount is 429 mm (16.9 in) spread over 29 days.

December Precipitation Trends in Mendi

The chart displays monthly precipitation patterns in Mendi, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Mendi, December typically receives around 429 mm (16.9 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec509345587634676505449538684654481429
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mendi

In Mendi in December humidity is 90%. With an average temperature of 17°C (63°F), this humidity feels like a heavy blanket wrapping around you, making travel feel sticky and exhausting as the air hangs thick and damp, making even short walks feel like a marathon.

December Average Humidity in Mendi

This chart illustrates the average monthly humidity levels in Mendi, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Mendi is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%91%91%91%91%91%88%84%85%89%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mendi

In Mendi in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Mendi.

Maximum UV Index Levels in Mendi for December

The chart shows the monthly maximum UV Index (UVI) for Mendi in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Mendi typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161818171412121416161616
Data source: Mendi December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Mendi Compares to Other Months

Weather in Mendi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mendi, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Mendi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)509 mm (20.1 inches)90%extreme
February Weather17°C (63°F)345 mm (13.6 inches)90%extreme
March Weather17°C (63°F)587 mm (23.1 inches)91%extreme
April Weather17°C (63°F)634 mm (25.0 inches)91%extreme
May Weather17°C (63°F)676 mm (26.6 inches)91%extreme
June Weather16°C (62°F)505 mm (19.9 inches)91%extreme
July Weather16°C (61°F)449 mm (17.7 inches)91%extreme
August Weather16°C (61°F)538 mm (21.2 inches)88%extreme
September Weather16°C (62°F)684 mm (26.9 inches)84%extreme
October Weather17°C (62°F)654 mm (25.8 inches)85%extreme
November Weather17°C (63°F)481 mm (18.9 inches)89%extreme
December Weather17°C (63°F)429 mm (16.9 inches)90%extreme

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