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August Weather in Walla Walla, Australia

Last updated: August 22, 2025

In Walla Walla, Australia, the average temperature in August hovers around 8°C (47°F). Expect a chilly minimum of -3°C (26°F) and a mild maximum of 20°C (69°F). Be prepared for a bit of rain, as 62 mm (2.4 in) of precipitation typically falls over 10 days. Additionally, the average humidity level stands at a comfortable 78%—perfect for enjoying the season!

August Temperature in Walla Walla

In August in Walla Walla, the average temperature is 8°C (47°F). The maximum can reach 20°C (69°F) and the minimum can be as low as -3°C (26°F). Be prepared for a mix of mild and chilly weather, perfect for layering and exploring the sights!

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

The chart illustrates August temperature patterns in Walla Walla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walla Walla, August typically has an average temperature of 8°C (47°F), with highs reaching up to 20°C (69°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec777369605246464752596572
Data source: Temperature data for Walla Walla 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 Walla Walla

In Walla Walla in August, the total precipitation amount is 62 mm (2.4 in) over a period of 10 days.

August Precipitation Trends in Walla Walla

The chart displays monthly precipitation patterns in Walla Walla, 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 Walla Walla, August typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec362855445355626245638249
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Walla Walla

In Walla Walla in August, humidity is 78%. With an average temperature of 8°C (47°F), this humidity feels like a chilly embrace, making travel invigorating yet damp, as the cool air wraps around you, emphasizing the need for layers to stay comfortable while exploring.

August Average Humidity in Walla Walla

This chart illustrates the average monthly humidity levels in Walla Walla, 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 Walla Walla is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec42%51%60%68%76%81%83%78%72%57%53%51%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Walla Walla

In Walla Walla in August, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Walla Walla.

Maximum UV Index Levels in Walla Walla for August

The chart shows the monthly maximum UV Index (UVI) for Walla Walla 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 Walla Walla typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312853357101214
Data source: Walla Walla 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 Walla Walla Compares to Other Months

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

This table compares monthly weather conditions in Walla Walla, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)36 mm (1.4 inches)42%extreme
February Weather23°C (73°F)28 mm (1.1 inches)51%extreme
March Weather21°C (69°F)55 mm (2.2 inches)59%extreme
April Weather16°C (61°F)44 mm (1.7 inches)68%very high
May Weather11°C (52°F)53 mm (2.1 inches)76%moderate
June Weather8°C (46°F)55 mm (2.2 inches)81%moderate
July Weather8°C (46°F)62 mm (2.5 inches)83%moderate
August Weather8°C (47°F)62 mm (2.4 inches)78%moderate
September Weather11°C (52°F)45 mm (1.8 inches)72%high
October Weather15°C (59°F)63 mm (2.5 inches)57%very high
November Weather18°C (65°F)82 mm (3.2 inches)53%extreme
December Weather22°C (72°F)49 mm (1.9 inches)51%extreme

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