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August Weather in Dorchester, Canada

Last updated: June 18, 2025

In Dorchester, Canada, the average temperature in August hovers around 21°C (70°F). You can expect a chilly minimum of 6°C (44°F) and a warm maximum of 31°C (88°F). With 96 mm (3.8 in) of precipitation over 11 days, it’s wise to prepare for wet weather. Don't forget the average humidity of 80%, which adds a tropical touch to the atmosphere!

August Temperature in Dorchester

In August in Dorchester, the average temperature is 21°C (70°F). The maximum can reach 31°C (88°F) and the minimum can be as low as 6°C (44°F). This weather makes it an ideal time for travelers to explore the area comfortably.

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

The chart illustrates August temperature patterns in Dorchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dorchester, August typically has an average temperature of 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec252634435666727063523831
Data source: Temperature data for Dorchester 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 Dorchester

In Dorchester in August, the precipitation amount is 96 mm (3.8 in) spread over 11 days, resulting in a significant accumulation of rainfall.

August Precipitation Trends in Dorchester

The chart displays monthly precipitation patterns in Dorchester, 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 Dorchester, August typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7679781091021049596831208774
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Dorchester

In Dorchester in August humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

August Average Humidity in Dorchester

This chart illustrates the average monthly humidity levels in Dorchester, 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 Dorchester is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%88%87%83%81%79%80%81%84%88%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Dorchester

In Dorchester in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Dorchester.

Maximum UV Index Levels in Dorchester for August

The chart shows the monthly maximum UV Index (UVI) for Dorchester 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 Dorchester typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101098542
Data source: Dorchester 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 Dorchester Compares to Other Months

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

This table compares monthly weather conditions in Dorchester, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)76 mm (3.0 inches)90%low
February Weather-3°C (26°F)79 mm (3.1 inches)90%moderate
March Weather1°C (34°F)78 mm (3.1 inches)87%moderate
April Weather6°C (44°F)109 mm (4.3 inches)87%very high
May Weather14°C (57°F)102 mm (4.0 inches)82%very high
June Weather19°C (67°F)104 mm (4.1 inches)81%very high
July Weather22°C (72°F)95 mm (3.7 inches)79%very high
August Weather21°C (70°F)96 mm (3.8 inches)80%very high
September Weather17°C (63°F)83 mm (3.2 inches)81%very high
October Weather11°C (52°F)120 mm (4.7 inches)84%moderate
November Weather3°C (38°F)87 mm (3.4 inches)88%moderate
December Weather-1°C (31°F)74 mm (2.9 inches)87%low

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