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December Weather in Siwa, Indonesia

Last updated: August 23, 2025

In December, the average temperature in Siwa, Indonesia is a warm 29°C (84°F), with daytime highs reaching up to 35°C (95°F) and occasional lows of 25°C (78°F). Rain may make its appearance, pouring down an average of 104 mm (4.1 in) over 18 days, while the average humidity hovers around a steamy 85%. Prepare for a month filled with heat and humidity!

December Temperature in Siwa

In December in Siwa, the average temperature is 29°C (84°F). Maximums can reach 35°C (95°F), and minimums can be as low as 25°C (78°F). This warm climate makes Siwa a great destination for travelers seeking sunny weather and outdoor activities.

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

The chart illustrates December temperature patterns in Siwa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siwa, December typically has an average temperature of 29°C (84°F), with highs reaching up to 35°C (95°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec848483838281818182848484
Data source: Temperature data for Siwa 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 Siwa

In Siwa in December, the total precipitation amount is 104 mm (4.1 in), occurring over the course of 18 days.

December Precipitation Trends in Siwa

The chart displays monthly precipitation patterns in Siwa, 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 Siwa, December typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec10011119626032234023613313282131105
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siwa

In Siwa in December, humidity is 85%. With an average temperature of 29°C (84°F), this humidity feels like a stifling blanket enveloping you, making travel challenging as you find yourself constantly seeking shade and cool breezes.

December Average Humidity in Siwa

This chart illustrates the average monthly humidity levels in Siwa, 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 Siwa is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%88%89%88%86%88%90%90%84%83%83%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siwa

In Siwa 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 Siwa, you can check here.

Maximum UV Index Levels in Siwa for December

The chart shows the monthly maximum UV Index (UVI) for Siwa 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 Siwa typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151412121415151414
Data source: Siwa 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 Siwa Compares to Other Months

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

This table compares monthly weather conditions in Siwa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather29°C (84°F)100 mm (3.9 inches)86%extreme
February Weather29°C (84°F)111 mm (4.4 inches)88%extreme
March Weather28°C (83°F)196 mm (7.7 inches)89%extreme
April Weather28°C (83°F)260 mm (10.3 inches)88%extreme
May Weather28°C (83°F)322 mm (12.7 inches)86%extreme
June Weather27°C (82°F)339 mm (13.4 inches)88%extreme
July Weather27°C (81°F)236 mm (9.3 inches)90%extreme
August Weather27°C (82°F)133 mm (5.2 inches)90%extreme
September Weather28°C (82°F)132 mm (5.2 inches)84%extreme
October Weather29°C (84°F)82 mm (3.2 inches)83%extreme
November Weather29°C (84°F)131 mm (5.2 inches)83%extreme
December Weather29°C (84°F)104 mm (4.1 inches)85%extreme

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