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December Weather in Yarmouth, Canada

Last updated: June 18, 2025

In December, the average temperature in Yarmouth, Canada hovers around 3°C (37°F). Be prepared for chilly conditions, as temperatures can dip to a minimum of -10°C (15°F), while occasionally peaking at a pleasant 14°C (57°F). This month brings a fair amount of precipitation, with 171 mm (6.7 in) falling over 16 days. Additionally, you can expect an average humidity of 81%, enhancing the overall damp atmosphere.

December Temperature in Yarmouth

In December in Yarmouth, the average temperature is 3°C (37°F). The maximum can reach 14°C (57°F) while the minimum can drop as low as -10°C (15°F). Travelers should be prepared for chilly conditions and varying temperatures during their visit.

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

The chart illustrates December temperature patterns in Yarmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yarmouth, December typically has an average temperature of 3°C (37°F), with highs reaching up to 14°C (57°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec333234414854606260544537
Data source: Temperature data for Yarmouth 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 Yarmouth

In Yarmouth in December, the precipitation amount is 171 mm (6.7 in) over a span of 16 days.

December Precipitation Trends in Yarmouth

The chart displays monthly precipitation patterns in Yarmouth, 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 Yarmouth, December typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec109137128139126119106106112133164171
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Yarmouth

In Yarmouth in December, humidity is 81%. With an average temperature of 3°C (37°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and only for the most adventurous.

December Average Humidity in Yarmouth

This chart illustrates the average monthly humidity levels in Yarmouth, 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 Yarmouth is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%84%80%82%89%89%85%83%78%80%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Yarmouth

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

Maximum UV Index Levels in Yarmouth for December

The chart shows the monthly maximum UV Index (UVI) for Yarmouth 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 Yarmouth typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910998532
Data source: Yarmouth 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 Yarmouth Compares to Other Months

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

This table compares monthly weather conditions in Yarmouth, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)109 mm (4.3 inches)85%low
February Weather0°C (32°F)137 mm (5.4 inches)86%moderate
March Weather1°C (34°F)128 mm (5.0 inches)84%moderate
April Weather5°C (41°F)139 mm (5.5 inches)80%very high
May Weather9°C (48°F)126 mm (5.0 inches)82%very high
June Weather12°C (55°F)119 mm (4.7 inches)89%very high
July Weather16°C (60°F)106 mm (4.2 inches)89%very high
August Weather17°C (63°F)105 mm (4.2 inches)85%very high
September Weather15°C (60°F)112 mm (4.4 inches)83%very high
October Weather12°C (55°F)133 mm (5.3 inches)78%moderate
November Weather7°C (46°F)164 mm (6.4 inches)80%moderate
December Weather3°C (37°F)171 mm (6.7 inches)81%low

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