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December Weather in Siari, Philippines

Last updated: August 27, 2025

In Siari, Philippines, the average temperature in December hovers around 26°C (79°F), with a comfortable minimum of 23°C (73°F) and a warm maximum of 29°C (85°F). Be prepared for some rain, as 186 mm (7.3 in) of precipitation falls over 25 days. With an average humidity of 91%, the atmosphere can feel quite sticky, making it essential to stay hydrated!

December Temperature in Siari

In December in Siari, the average temperature is 26°C (79°F). Maximums can reach 29°C (85°F), while minimums can drop to as low as 23°C (73°F). This pleasant climate makes Siari an ideal destination for travelers looking to enjoy mild, inviting weather.

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

The chart illustrates December temperature patterns in Siari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siari, December typically has an average temperature of 26°C (79°F), with highs reaching up to 29°C (85°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec787879808080797979797979
Data source: Temperature data for Siari 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 Siari

In Siari in December, the precipitation amount is 186 mm (7.3 in) over the course of 25 days.

December Precipitation Trends in Siari

The chart displays monthly precipitation patterns in Siari, 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 Siari, December typically receives around 186 mm (7.3 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec141959184273257284210320314206187
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siari

In Siari in December, humidity is 91%. With an average temperature of 26°C (79°F), this humidity feels like navigating through an invisible blanket, making even short strolls feel laborious and leaving a sticky sheen on your skin, which can be overwhelming for travelers.

December Average Humidity in Siari

This chart illustrates the average monthly humidity levels in Siari, 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 Siari is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%84%82%83%85%86%87%89%85%87%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siari

In Siari in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Siari.

Maximum UV Index Levels in Siari for December

The chart shows the monthly maximum UV Index (UVI) for Siari 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 Siari typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131416161413131415141211
Data source: Siari 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 Siari Compares to Other Months

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

This table compares monthly weather conditions in Siari, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)141 mm (5.6 inches)88%extreme
February Weather25°C (78°F)95 mm (3.7 inches)86%extreme
March Weather26°C (79°F)91 mm (3.6 inches)84%extreme
April Weather27°C (80°F)84 mm (3.3 inches)82%extreme
May Weather27°C (80°F)273 mm (10.8 inches)83%extreme
June Weather27°C (80°F)257 mm (10.1 inches)85%extreme
July Weather26°C (80°F)284 mm (11.2 inches)86%extreme
August Weather26°C (80°F)210 mm (8.3 inches)87%extreme
September Weather26°C (79°F)320 mm (12.6 inches)89%extreme
October Weather26°C (79°F)314 mm (12.3 inches)85%extreme
November Weather26°C (79°F)206 mm (8.1 inches)87%extreme
December Weather26°C (79°F)186 mm (7.3 inches)91%extreme

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