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April Weather in Walla Walla, Australia

Last updated: August 22, 2025

In April, the average temperature in Walla Walla, Australia hovers around 16°C (61°F), making it a comfortable time to explore the area. Expect a minimum chill of 1°C (34°F) and the warmth peaking at 34°C (94°F). Over this period, precipitation totals about 44 mm (1.7 in), often occurring across 3 days, while the average humidity stands at a moderate 68%.

April Temperature in Walla Walla

In April in Walla Walla, the average temperature is 16°C (61°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 1°C (34°F). This diverse range of temperatures makes it essential to pack a variety of clothing options for your travels.

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

The chart illustrates April 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, April typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°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.

April Precipitation in Walla Walla

In Walla Walla in April, the precipitation amount is 44 mm (1.7 in) over the course of 3 days.

April Precipitation Trends in Walla Walla

The chart displays monthly precipitation patterns in Walla Walla, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Walla Walla, April typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec362855445355626245638249
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Walla Walla

In Walla Walla in April, humidity is 68%. With an average temperature of 16°C (61°F), this humidity feels like a warm embrace that sometimes becomes stifling, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or cool breezes more frequently.

April Average Humidity in Walla Walla

This chart illustrates the average monthly humidity levels in Walla Walla, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Walla Walla is approximately 68%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Walla Walla

In Walla Walla in April, 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 Walla Walla.

Maximum UV Index Levels in Walla Walla for April

The chart shows the monthly maximum UV Index (UVI) for Walla Walla in April, 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 April, the maximum UV index in Walla Walla typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312853357101214
Data source: Walla Walla April 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 April 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 April’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 April’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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