Portland Weather in August

August in Portland sees daytime temperatures around 28°C (82°F) and lows of 16°C (61°F) at night. With around 103 mm (4.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Portland in August

Typically, you can expect about 9 days of rain this month, with 103 mm (4.1 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Portland in August

Portland in August gets highs of 28°C (82°F) during the day and drops to 16°C (61°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 16°C (61°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Portland in August

Enjoy a sunny month with about 317 hours of sunshine, the clear skies make Portland even more beautiful.

If you prefer dry days with pleasant temperatures, July and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.