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December Weather in Chertsey, Canada

Last updated: June 18, 2025

In December, the average temperature in Chertsey, Canada hovers around -8°C (18°F), with temperatures dipping as low as -30°C (-21°F) and occasionally reaching a balmy 12°C (54°F). Expect about 96 mm (3.8 in) of precipitation over 12 days, contributing to an average humidity of 89%.

December Temperature in Chertsey

In December in Chertsey, the average temperature is -8°C (18°F), with maximums reaching 12°C (54°F) and minimums dropping as low as -30°C (-21°F). This wide temperature range means travelers should be well-prepared for cold weather and should dress in layers to ensure comfort during their visit.

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

The chart illustrates December temperature patterns in Chertsey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chertsey, December typically has an average temperature of -8°C (18°F), with highs reaching up to 12°C (54°F) and lows dropping to around -30°C (-21°F).
JanFebMarAprMayJunJulAugSepOctNovDec131625385463686658463018
Data source: Temperature data for Chertsey 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 Chertsey

In Chertsey in December, the precipitation amount is 96 mm (3.8 in) spread over a duration of 12 days.

December Precipitation Trends in Chertsey

The chart displays monthly precipitation patterns in Chertsey, 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 Chertsey, December typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8592921201071111241148912611196
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chertsey

In Chertsey in December humidity is 89%. With an average temperature of -8°C (18°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors a daunting challenge as you contend with the biting cold and damp air.

December Average Humidity in Chertsey

This chart illustrates the average monthly humidity levels in Chertsey, 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 Chertsey is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chertsey

In Chertsey in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Chertsey, you can visit Hourly UV Index in Chertsey.

Maximum UV Index Levels in Chertsey for December

The chart shows the monthly maximum UV Index (UVI) for Chertsey 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 Chertsey typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899887532
Data source: Chertsey 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 Chertsey Compares to Other Months

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

This table compares monthly weather conditions in Chertsey, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)85 mm (3.4 inches)93%low
February Weather-9°C (16°F)92 mm (3.6 inches)92%moderate
March Weather-4°C (25°F)91 mm (3.6 inches)86%moderate
April Weather4°C (39°F)120 mm (4.7 inches)85%very high
May Weather12°C (54°F)107 mm (4.2 inches)80%very high
June Weather17°C (63°F)111 mm (4.4 inches)74%very high
July Weather20°C (68°F)124 mm (4.9 inches)76%very high
August Weather19°C (66°F)114 mm (4.5 inches)75%very high
September Weather14°C (58°F)89 mm (3.5 inches)78%high
October Weather8°C (46°F)126 mm (5.0 inches)86%moderate
November Weather-1°C (30°F)111 mm (4.4 inches)88%moderate
December Weather-8°C (18°F)96 mm (3.8 inches)89%low

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