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August Weather in Dartmouth, Canada

Last updated: June 18, 2025

In August, the average temperature in Dartmouth, Canada is a pleasant 20°C (67°F). Expect the temperature range to vary from a minimum of 9°C (48°F) to a maximum of 30°C (86°F). During this month, you'll likely encounter about 77 mm (3.0 in) of precipitation spread over 10 days, contributing to an average humidity level of 85%.

August Temperature in Dartmouth

In August in Dartmouth, the average temperature is 20°C (67°F). Maximums can reach 30°C (86°F), while minimums can be as low as 9°C (48°F). This mild climate makes Dartmouth an ideal destination for travelers looking to enjoy pleasant weather.

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

The chart illustrates August 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, August typically has an average temperature of 20°C (67°F), with highs reaching up to 30°C (86°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec272731414959666761514132
Data source: Temperature data for Dartmouth 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.

August Precipitation in Dartmouth

In Dartmouth in August, the total precipitation amount is 77 mm (3.0 in) spread over a duration of 10 days.

August Precipitation Trends in Dartmouth

The chart displays monthly precipitation patterns in Dartmouth, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Dartmouth, August typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9712210312293999177104109149127
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Dartmouth

In Dartmouth in August, humidity is 85%. With an average temperature of 20°C (67°F), this humidity feels like walking through a warm, damp blanket, making travel feel heavy and sluggish, as every step can leave you feeling sticky and breathless.

August Average Humidity in Dartmouth

This chart illustrates the average monthly humidity levels in Dartmouth, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Dartmouth is approximately 85%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Dartmouth

In Dartmouth in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Dartmouth.

Maximum UV Index Levels in Dartmouth for August

The chart shows the monthly maximum UV Index (UVI) for Dartmouth in August, 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 August, the maximum UV index in Dartmouth typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Dartmouth August 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 August 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 August’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 August’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

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