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August Weather in Ancaster, Canada

Last updated: June 18, 2025

In Ancaster, Canada, the average temperature in August hovers around 21°C (71°F), offering a pleasant climate for outdoor adventures. You can expect temperatures to range from a cool 9°C (48°F) to a warm 32°C (91°F). However, be prepared for 89 mm (3.5 in) of precipitation across 12 days, with an average humidity of 80%, creating a tropical atmosphere. Enjoy your stay!

August Temperature in Ancaster

In August in Ancaster, the average temperature is 21°C (71°F), with maximums reaching up to 32°C (91°F) and minimums dropping as low as 9°C (48°F). This mild climate makes it an ideal time for travelers to enjoy outdoor activities and explore the local attractions comfortably.

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

The chart illustrates August temperature patterns in Ancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ancaster, August typically has an average temperature of 21°C (71°F), with highs reaching up to 32°C (91°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec252634445767727064523831
Data source: Temperature data for Ancaster 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 Ancaster

In Ancaster in August, the precipitation amount is 89 mm (3.5 in) during 12 days of rainfall.

August Precipitation Trends in Ancaster

The chart displays monthly precipitation patterns in Ancaster, 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 Ancaster, August typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec69736510396989389691017573
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Ancaster

In Ancaster in August humidity is 80%. With an average temperature of 21°C (71°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities feel more exhausting and requiring frequent breaks to stay hydrated.

August Average Humidity in Ancaster

This chart illustrates the average monthly humidity levels in Ancaster, 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 Ancaster 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 Ancaster

In Ancaster 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 Ancaster.

Maximum UV Index Levels in Ancaster for August

The chart shows the monthly maximum UV Index (UVI) for Ancaster 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 Ancaster typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Ancaster 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 Ancaster Compares to Other Months

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

This table compares monthly weather conditions in Ancaster, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)69 mm (2.7 inches)90%low
February Weather-3°C (26°F)73 mm (2.9 inches)90%moderate
March Weather1°C (34°F)64 mm (2.5 inches)87%moderate
April Weather7°C (44°F)103 mm (4.1 inches)87%very high
May Weather14°C (57°F)96 mm (3.8 inches)82%very high
June Weather19°C (67°F)98 mm (3.9 inches)81%very high
July Weather22°C (73°F)93 mm (3.6 inches)79%very high
August Weather21°C (71°F)89 mm (3.5 inches)80%very high
September Weather18°C (64°F)69 mm (2.7 inches)81%high
October Weather11°C (53°F)101 mm (4.0 inches)84%moderate
November Weather3°C (38°F)75 mm (2.9 inches)88%moderate
December Weather-1°C (31°F)73 mm (2.9 inches)87%low

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