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December Weather in Bath, Canada

Last updated: June 18, 2025

In Bath, Canada, the average temperature for December hovers around -2°C (29°F). While you can expect a minimum chill of -27°C (-17°F), the mercury may rise to a pleasant 14°C (57°F) on warmer days. With 90 mm (3.5 in) of precipitation spread over 11 days, don't forget your umbrella. The air tends to be quite damp, boasting an average humidity of 89%.

December Temperature in Bath

In December in Bath, the average temperature is -2°C (29°F), with maximums reaching 14°C (57°F) and minimums plummeting to as low as -27°C (-17°F). Travelers should prepare for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates December temperature patterns in Bath, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bath, December typically has an average temperature of -2°C (29°F), with highs reaching up to 14°C (57°F) and lows dropping to around -27°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec222432435665727163523828
Data source: Temperature data for Bath 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 Bath

In Bath in December, the total precipitation amounts to 90 mm (3.5 in) over the course of 11 days.

December Precipitation Trends in Bath

The chart displays monthly precipitation patterns in Bath, 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 Bath, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7476741259891106907414510090
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bath

In Bath in December humidity is 89%. With an average temperature of -2°C (29°F), this humidity feels like a suffocating fog that clings to your skin, making outdoor adventures less enjoyable and giving travel a heavy and oppressive feel.

December Average Humidity in Bath

This chart illustrates the average monthly humidity levels in Bath, 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 Bath is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bath

In Bath 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 Bath, you can visit Hourly UV Index in Bath.

Maximum UV Index Levels in Bath for December

The chart shows the monthly maximum UV Index (UVI) for Bath 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 Bath typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Bath 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 Bath Compares to Other Months

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

This table compares monthly weather conditions in Bath, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (22°F)74 mm (2.9 inches)93%low
February Weather-4°C (24°F)76 mm (3.0 inches)93%moderate
March Weather0°C (32°F)74 mm (2.9 inches)86%moderate
April Weather6°C (43°F)125 mm (4.9 inches)82%very high
May Weather13°C (56°F)98 mm (3.8 inches)75%very high
June Weather19°C (66°F)91 mm (3.6 inches)68%very high
July Weather22°C (72°F)106 mm (4.2 inches)69%very high
August Weather21°C (71°F)90 mm (3.5 inches)67%very high
September Weather17°C (63°F)74 mm (2.9 inches)72%high
October Weather11°C (52°F)145 mm (5.7 inches)83%moderate
November Weather3°C (38°F)100 mm (3.9 inches)88%moderate
December Weather-2°C (29°F)90 mm (3.5 inches)89%low

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