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December Weather in San Guillermo, Philippines

Last updated: August 27, 2025

In San Guillermo, Philippines, the average temperature in December reaches a pleasant 24°C (76°F), with minimums dipping to 19°C (67°F) and maximums soaring to 33°C (91°F). Be prepared for moisture, as the region experiences a substantial 289 mm (11.4 in) of precipitation over 25 days, accompanied by an average humidity level of 85%.

December Temperature in San Guillermo

In December in San Guillermo, the average temperature is 24°C (76°F). The maximum can reach 33°C (91°F), and the minimum can be as low as 19°C (67°F). This pleasant climate makes San Guillermo a great destination for travelers seeking warm and comfortable conditions.

December Weather in San Guillermo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Guillermo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Guillermo, December typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (91°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec747478818486848382807976
Data source: Temperature data for San Guillermo 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 San Guillermo

In San Guillermo in December, the precipitation amount is 289 mm (11.4 in) occurring over the course of 25 days.

December Precipitation Trends in San Guillermo

The chart displays monthly precipitation patterns in San Guillermo, 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 San Guillermo, December typically receives around 289 mm (11.4 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec1591177353148129288240221252237289
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Guillermo

In San Guillermo in December humidity is 85%. With an average temperature of 24°C (76°F), this humidity feels like walking through a warm, thick blanket that envelops you, making every step slightly more laborious and prompting a constant desire for refreshing coolness while exploring.

December Average Humidity in San Guillermo

This chart illustrates the average monthly humidity levels in San Guillermo, 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 San Guillermo is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%71%73%77%85%86%87%87%86%89%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Guillermo

In San Guillermo in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Guillermo.

Maximum UV Index Levels in San Guillermo for December

The chart shows the monthly maximum UV Index (UVI) for San Guillermo 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 San Guillermo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141414141413109
Data source: San Guillermo 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 San Guillermo Compares to Other Months

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

This table compares monthly weather conditions in San Guillermo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)159 mm (6.3 inches)77%extreme
February Weather24°C (75°F)117 mm (4.6 inches)73%extreme
March Weather26°C (78°F)73 mm (2.9 inches)71%extreme
April Weather27°C (81°F)53 mm (2.1 inches)73%extreme
May Weather29°C (85°F)148 mm (5.8 inches)77%extreme
June Weather30°C (86°F)128 mm (5.1 inches)85%extreme
July Weather29°C (84°F)288 mm (11.3 inches)86%extreme
August Weather29°C (84°F)240 mm (9.5 inches)87%extreme
September Weather28°C (82°F)221 mm (8.7 inches)87%extreme
October Weather27°C (80°F)252 mm (9.9 inches)86%extreme
November Weather26°C (79°F)237 mm (9.3 inches)89%very high
December Weather24°C (76°F)289 mm (11.4 inches)85%very high

Compare San Guillermo's Climate with Cities Worldwide