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August Weather in Napierville, Canada

Last updated: June 18, 2025

In August, the average temperature in Napierville, Canada is a pleasant 21°C (70°F). Visitors can expect a minimum of 8°C (47°F) and a maximum of 34°C (93°F). Throughout the month, precipitation averages around 115 mm (4.5 in) spread over 13 days, resulting in a humidity level of approximately 75%.

August Temperature in Napierville

In August in Napierville, the average temperature is 21°C (70°F). Maximums can reach 34°C (93°F), and minimums can be as low as 8°C (47°F). This climate makes Napierville an ideal destination for travelers seeking pleasant weather and a mix of warm and cooler days.

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

The chart illustrates August temperature patterns in Napierville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Napierville, August typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec182130435766727062503525
Data source: Temperature data for Napierville 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 Napierville

In Napierville in August, the precipitation amount is 115 mm (4.5 in) spread over 13 days.

August Precipitation Trends in Napierville

The chart displays monthly precipitation patterns in Napierville, 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 Napierville, August typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec818082116981121161157314111482
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Napierville

In Napierville in August, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

August Average Humidity in Napierville

This chart illustrates the average monthly humidity levels in Napierville, 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 Napierville is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Napierville

In Napierville 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 Napierville.

Maximum UV Index Levels in Napierville for August

The chart shows the monthly maximum UV Index (UVI) for Napierville 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 Napierville typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Napierville 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 Napierville Compares to Other Months

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

This table compares monthly weather conditions in Napierville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (19°F)81 mm (3.2 inches)93%low
February Weather-6°C (21°F)80 mm (3.1 inches)92%moderate
March Weather-1°C (30°F)82 mm (3.2 inches)86%moderate
April Weather6°C (43°F)116 mm (4.6 inches)85%high
May Weather14°C (57°F)98 mm (3.8 inches)80%very high
June Weather19°C (67°F)112 mm (4.4 inches)74%very high
July Weather22°C (72°F)116 mm (4.6 inches)76%very high
August Weather21°C (70°F)115 mm (4.5 inches)75%very high
September Weather16°C (62°F)73 mm (2.9 inches)78%high
October Weather10°C (51°F)141 mm (5.6 inches)86%moderate
November Weather2°C (35°F)114 mm (4.5 inches)88%moderate
December Weather-4°C (25°F)82 mm (3.2 inches)89%low

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