December Weather in Sentani, Indonesia

Last updated: August 23, 2025

In December, the average temperature in Sentani, Indonesia hovers around 27°C (81°F), with daytime highs reaching up to 31°C (88°F) and nighttime lows around 25°C (77°F). Expect a significant amount of precipitation—approximately 312 mm (12.3 in)—spread over 29 days, contributing to a high average humidity of 84%.

December Temperature in Sentani

In December in Sentani, the average temperature is 27°C (81°F). Maximums can reach 31°C (88°F), while minimums can be as low as 25°C (77°F). This mild and warm climate makes it an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates December temperature patterns in Sentani, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sentani, December typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (88°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for Sentani generated using information from the Copernicus Climate Change Service.

December Precipitation in Sentani

In Sentani in December, the total precipitation amount is 312 mm (12.3 in) spread over the course of 29 days.

December Precipitation Trends in Sentani

The chart displays monthly precipitation patterns in Sentani, 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 Sentani, December typically receives around 312 mm (12.3 inches) of precipitation spread over approximately 29 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Sentani

In Sentani in December humidity is 84%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, moist blanket, making travel uncomfortable and sticky, as every step seems to weigh you down with the heavy air.

December Average Humidity in Sentani

This chart illustrates the average monthly humidity levels in Sentani, 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 Sentani is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sentani

In Sentani in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sentani, you can check here.

Maximum UV Index Levels in Sentani for December

The chart shows the monthly maximum UV Index (UVI) for Sentani 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 Sentani typically reaches 14, which falls under the extreme exposure category.

Data source: Sentani 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 Sentani Compares to Other Months

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

This table compares monthly weather conditions in Sentani, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	200 mm (7.9 inches)	84%	extreme
February Weather	27°C (80°F)	310 mm (12.2 inches)	84%	extreme
March Weather	27°C (80°F)	320 mm (12.6 inches)	83%	extreme
April Weather	27°C (80°F)	301 mm (11.8 inches)	85%	extreme
May Weather	27°C (81°F)	231 mm (9.1 inches)	84%	extreme
June Weather	27°C (80°F)	234 mm (9.2 inches)	85%	extreme
July Weather	26°C (80°F)	265 mm (10.4 inches)	85%	extreme
August Weather	27°C (80°F)	229 mm (9.0 inches)	86%	extreme
September Weather	27°C (81°F)	191 mm (7.5 inches)	86%	extreme
October Weather	27°C (81°F)	228 mm (9.0 inches)	85%	extreme
November Weather	27°C (81°F)	303 mm (11.9 inches)	85%	extreme
December Weather	27°C (81°F)	312 mm (12.3 inches)	84%	extreme