Portland in August
In August, Portland averages 29°C (84°F) during the day and 15°C (60°F) at night, with around 7 days of rain (13 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
It's peak hurricane season in Portland during August. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How August compares to the rest of the year in Portland
August is one of the warmest months in Portland (1st of 12) and one of the driest months (11th of 12). Daytime temperature runs 12°C above the annual average (17°C). August runs 1°C warmer than July (29°C) and cools 5°C in September (24°C).
August sunrise & sunset in Portland
Times shown for Portland local time (America/Los_Angeles), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Portland — August
Golden-hour and blue-hour windows for the 15th of August, in Portland's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Portland in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (High season) and Portland's popularity.
Crowds & pricing — August in Portland
This is a busy month in Portland — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Northern Hemisphere summer holidays peak hazard season (1 active)
Sun & mosquito risk — August in Portland
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Portland in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 9°C / 47°F | 2°C / 36°F | 170 mm | 21 | — |
| February | 9°C / 48°F | 2°C / 35°F | 147 mm | 20 | — |
| March | 12°C / 54°F | 3°C / 38°F | 148 mm | 21 | — |
| April | 15°C / 60°F | 6°C / 42°F | 115 mm | 19 | — |
| May | 20°C / 68°F | 9°C / 49°F | 71 mm | 15 | — |
| June | 24°C / 75°F | 12°C / 54°F | 55 mm | 12 | — |
| July | 29°C / 83°F | 15°C / 58°F | 9 mm | 5 | — |
| August | 29°C / 84°F | 15°C / 60°F | 13 mm | 7 | — |
| September | 24°C / 75°F | 12°C / 54°F | 61 mm | 12 | — |
| October | 17°C / 63°F | 9°C / 47°F | 143 mm | 17 | — |
| November | 11°C / 51°F | 4°C / 40°F | 175 mm | 20 | — |
| December | 7°C / 45°F | 2°C / 36°F | 216 mm | 21 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Portland in August →
Frequently asked questions
How hot is Portland in August?
In August, Portland averages a high of 29°C (84°F) and a low of 15°C (60°F) — generally warm.
Does it rain a lot in Portland in August?
August sees occasional rain in Portland, with about 7 rainy days on average.
Is August a good time to visit Portland?
August is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Portland in August?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full August packing list for Portland for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.