Last updated: August 22, 2025
In August, the average temperature in Portland West, Australia hovers around 11°C (52°F), making it a mild time of year. However, you can expect temperatures to dip to a minimum of 6°C (42°F) and reach up to 19°C (66°F). With an average precipitation of 113 mm (4.4 in) over 18 days, it's wise to prepare for some rainy weather. Additionally, the average humidity stands at a comfortable 77%, adding to the season's unique charm.
In August in Portland West, the average temperature is 11°C (52°F). Maximums can reach 19°C (66°F), while minimums can be as low as 6°C (42°F). Travelers should pack layers to comfortably adapt to the day's temperature fluctuations.
In Portland West in August, the precipitation amount is 113 mm (4.4 in) over a span of 18 days.
In Portland West in August humidity is 77%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable if not properly dressed, as the moisture in the air amplifies the cold, leaving travelers feeling cooler than expected.
In Portland West in August, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Portland West for better planning.
UV Risk Categories
Weather in Portland West varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Portland West, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 18°C (64°F) | 32 mm (1.3 inches) | 76% | extreme |
| February Weather | 17°C (63°F) | 31 mm (1.2 inches) | 75% | extreme |
| March Weather | 17°C (63°F) | 35 mm (1.4 inches) | 76% | very high |
| April Weather | 15°C (60°F) | 51 mm (2.0 inches) | 76% | high |
| May Weather | 13°C (56°F) | 92 mm (3.6 inches) | 79% | moderate |
| June Weather | 11°C (53°F) | 81 mm (3.2 inches) | 78% | moderate |
| July Weather | 11°C (52°F) | 122 mm (4.8 inches) | 78% | moderate |
| August Weather | 11°C (52°F) | 113 mm (4.4 inches) | 77% | moderate |
| September Weather | 12°C (54°F) | 86 mm (3.4 inches) | 76% | high |
| October Weather | 13°C (56°F) | 74 mm (2.9 inches) | 76% | very high |
| November Weather | 15°C (59°F) | 68 mm (2.7 inches) | 76% | extreme |
| December Weather | 16°C (61°F) | 44 mm (1.7 inches) | 76% | extreme |