nomadseason

January Weather in Dartmouth, Canada

Last updated: June 18, 2025

In January, the average temperature in Dartmouth, Canada hovers around -3°C (27°F). Be prepared for chilly extremes, as temperatures can drop to a frigid -18°C (0°F), while occasionally peaking at a mild 15°C (58°F). Expect 97 mm (3.8 in) of precipitation spread over about 10 days, contributing to an average humidity of 82%. Stay warm and dry!

January Temperature in Dartmouth

In January in Dartmouth, the average temperature is -3°C (27°F), with maximums reaching up to 15°C (58°F) and minimums plunging as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for both chilly and milder conditions.

January Weather in Dartmouth: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Dartmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dartmouth, January typically has an average temperature of -3°C (27°F), with highs reaching up to 15°C (58°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec272731414959666761514132
Data source: Temperature data for Dartmouth generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Dartmouth

In Dartmouth in January, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

January Precipitation Trends in Dartmouth

The chart displays monthly precipitation patterns in Dartmouth, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Dartmouth, January typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9712210312293999177104109149127
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Dartmouth

In Dartmouth in January, humidity is 82%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm while navigating through the damp air.

January Average Humidity in Dartmouth

This chart illustrates the average monthly humidity levels in Dartmouth, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Dartmouth is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%82%82%82%84%86%85%83%83%85%83%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Dartmouth

In Dartmouth in January, 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 Dartmouth, you can visit Hourly UV Index in Dartmouth.

Maximum UV Index Levels in Dartmouth for January

The chart shows the monthly maximum UV Index (UVI) for Dartmouth in January, 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 January, the maximum UV index in Dartmouth typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Dartmouth January 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 January Weather in Dartmouth Compares to Other Months

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

This table compares monthly weather conditions in Dartmouth, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)97 mm (3.8 inches)82%low
February Weather-3°C (27°F)122 mm (4.8 inches)83%moderate
March Weather0°C (32°F)103 mm (4.1 inches)82%moderate
April Weather5°C (41°F)122 mm (4.8 inches)82%high
May Weather9°C (49°F)93 mm (3.7 inches)82%very high
June Weather15°C (59°F)99 mm (3.9 inches)84%very high
July Weather19°C (66°F)91 mm (3.6 inches)86%very high
August Weather20°C (67°F)77 mm (3.0 inches)85%very high
September Weather16°C (61°F)104 mm (4.1 inches)83%high
October Weather11°C (51°F)109 mm (4.3 inches)83%moderate
November Weather5°C (42°F)149 mm (5.9 inches)85%moderate
December Weather0°C (32°F)127 mm (5.0 inches)83%low

Compare Dartmouth's Climate with Cities Worldwide