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December Weather in Bontang, Indonesia

Last updated: August 23, 2025

In December, the average temperature in Bontang, Indonesia is a warm 27°C (81°F), with daily variations ranging from a minimum of 24°C (76°F) to a pleasant maximum of 32°C (89°F). Expect significant rainfall, as the area typically receives around 272 mm (10.7 in) of precipitation over 29 days. To top it off, the average humidity hovers around an impressive 88%, making for a tropically lush environment!

December Temperature in Bontang

In December in Bontang, the average temperature is 27°C (81°F). Maximums can reach 32°C (89°F), while minimums can be as low as 24°C (76°F). This pleasant and warm climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Bontang.

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

The chart illustrates December temperature patterns in Bontang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bontang, December typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (89°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec808081818181808081818181
Data source: Temperature data for Bontang 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 Bontang

In Bontang in December, the precipitation amount is 272 mm (10.7 in) during a span of 29 days.

December Precipitation Trends in Bontang

The chart displays monthly precipitation patterns in Bontang, 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 Bontang, December typically receives around 272 mm (10.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec193184233222221215186160163200239272
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bontang

In Bontang in December, humidity is 88%. With an average temperature of 27°C (81°F), this humidity feels like a warm, thick blanket wrapping around you as you travel, making every step feel more laborious and requiring frequent breaks to cool down and hydrate.

December Average Humidity in Bontang

This chart illustrates the average monthly humidity levels in Bontang, 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 Bontang is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%90%89%87%87%88%90%89%88%86%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bontang

In Bontang in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Bontang.

Maximum UV Index Levels in Bontang for December

The chart shows the monthly maximum UV Index (UVI) for Bontang 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 Bontang typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141617151412131414151413
Data source: Bontang 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 Bontang Compares to Other Months

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

This table compares monthly weather conditions in Bontang, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)193 mm (7.6 inches)90%extreme
February Weather27°C (81°F)184 mm (7.2 inches)90%extreme
March Weather27°C (81°F)233 mm (9.2 inches)90%extreme
April Weather27°C (81°F)222 mm (8.8 inches)89%extreme
May Weather27°C (82°F)221 mm (8.7 inches)86%extreme
June Weather27°C (81°F)215 mm (8.5 inches)87%extreme
July Weather27°C (81°F)186 mm (7.3 inches)88%extreme
August Weather27°C (81°F)160 mm (6.3 inches)90%extreme
September Weather27°C (81°F)163 mm (6.4 inches)89%extreme
October Weather27°C (81°F)200 mm (7.9 inches)88%extreme
November Weather27°C (81°F)239 mm (9.4 inches)86%extreme
December Weather27°C (81°F)272 mm (10.7 inches)88%extreme

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