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December Weather in Santiago, Philippines

Last updated: August 27, 2025

In Santiago, Philippines, the average temperature in December reaches a warm 27°C (81°F). Expect temperatures to range from a comfortable 24°C (76°F) at night to a sunny 29°C (85°F) during the day. However, be prepared for significant rainfall, as precipitation amounts can total 264 mm (10.4 in) over 21 days, accompanied by an average humidity of 91%.

December Temperature in Santiago

In December in Santiago, the average temperature is 27°C (81°F). Maximum temperatures can reach 29°C (85°F), while minimums can drop to as low as 24°C (76°F). This pleasant climate makes it an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates December temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, December typically has an average temperature of 27°C (81°F), with highs reaching up to 29°C (85°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec808081818282828382828281
Data source: Temperature data for Santiago 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 Santiago

In Santiago in December, the precipitation amount is 264 mm (10.4 in) over the course of 21 days.

December Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, December typically receives around 264 mm (10.4 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec1771027048115223217175215235174264
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santiago

In Santiago in December, humidity is 91%. With an average temperature of 27°C (81°F), this humidity feels like a warm, thick haze wrapping around you, making travel feel sluggish and the air heavy, damp with the scent of earth and greenery, which can be both enchanting and exhausting.

December Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%77%78%85%87%88%89%90%87%90%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santiago

In Santiago 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 Santiago.

Maximum UV Index Levels in Santiago for December

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131316161413131414141211
Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)177 mm (7.0 inches)85%extreme
February Weather27°C (80°F)102 mm (4.0 inches)80%extreme
March Weather27°C (81°F)70 mm (2.8 inches)77%extreme
April Weather27°C (82°F)48 mm (1.9 inches)78%extreme
May Weather28°C (83°F)115 mm (4.5 inches)84%extreme
June Weather28°C (83°F)223 mm (8.8 inches)87%extreme
July Weather28°C (83°F)217 mm (8.5 inches)88%extreme
August Weather28°C (83°F)175 mm (6.9 inches)89%extreme
September Weather28°C (83°F)215 mm (8.5 inches)90%extreme
October Weather28°C (82°F)235 mm (9.3 inches)87%extreme
November Weather28°C (82°F)174 mm (6.8 inches)90%extreme
December Weather27°C (81°F)264 mm (10.4 inches)91%extreme

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