What to Wear in Portland
USA · 4 monthly packing guides
Portland runs Pacific Northwest layered — May 19°C / 66°F afternoons to August 27°C / 81°F afternoons, with mornings starting at 9-14°C / 48-57°F across the May-August window. The PNW pattern: short rain bursts develop fast from clear sky; a packable rain shell goes in the crossbody at all times (locals don't carry umbrellas). The dressing register runs Pacific Northwest heritage: Pendleton (Pendleton-Oregon-founded 1863, the wool-blanket and shirt heritage), Filson (Seattle-1897 but ubiquitous), Danner Boots (Portland-founded 1932, made-in-USA hiking-boot heritage), Tellason and Imogene + Willie denim, Wildfang (Portland women's contemporary), Nike (Beaverton HQ), Adidas (Portland-suburb HQ), Stumptown Coffee Roasters (Portland-founded 1999 third-wave coffee). Forest Park (5,200 acres, the largest urban forest in the US), Mt Hood, Multnomah Falls anchor the outdoor weekend culture. Wildfire-smoke risk opens August.
Choose your month below to match your layers and shoes to the weather. Across the months covered, average daily lows reach 9°C / 48°F in May; average highs reach 27°C / 81°F in July.
Compare Portland by month
Monthly averages help compare packing needs; check the forecast before departure. Only months with published guides are listed. See the source notes below for station and measurement differences. Scroll across the table to see all weather details on a small screen.
| Month | Average low | Average high | Rain days | Daylight |
|---|---|---|---|---|
| May packing guide | 9°C / 48°F | 19°C / 66°F | 11 | 14h 45m |
| June packing guide | 12°C / 54°F | 23°C / 73°F | 7 | 15h 35m |
| July packing guide | 14°C / 57°F | 27°C / 81°F | 4 | 15h 30m |
| August packing guide | 14°C / 57°F | 27°C / 81°F | 4 | 14h 25m |
Choose your Portland packing list
Portland in May is Pacific Northwest late spring — 19°C / 66°F afternoons, 9°C / 48°F mornings, 11 rain days, the Cascades still snow-capped to the east.
In this capsule: Mid-weight wool sweater — Pendleton, Filson, Quince; Cotton/wool blend long-sleeve base — neutral; Packable rain shell — Patagonia, Filson, Outdoor Research.
Portland in June is Pacific Northwest early summer — 23°C / 73°F afternoons, 12°C / 54°F mornings, 7 rain days, the rose-bushes blooming across Washington Park and the Rose Festival fireworks in early June.
In this capsule: Mid-weight wool sweater or cashmere — Pendleton; Cotton/wool blend long-sleeve base; Packable rain shell — Patagonia, Filson, Outdoor Research.
Portland in July is peak Pacific Northwest summer — 27°C / 81°F afternoons, 14°C / 57°F mornings, 4 rain days, the longest stretch of clear-sky weather of the year.
In this capsule: Lightweight cotton tee + cotton dress; Mid-weight cardigan — Pendleton, Wildfang, Quince; Denim or chinos — Tellason, A.G. Adriano.
Portland in August is peak summer continuing — 27°C / 81°F afternoons, 14°C / 57°F mornings, 4 rain days, the Pickathon music festival, the wildfire-smoke risk window opening.
In this capsule: Lightweight cotton tee + cotton dress; Mid-weight cardigan — Pendleton, Wildfang; Denim or chinos — Tellason, A.G. Adriano.
Climate sources by month
These credits follow the source recorded on each monthly guide. Climate figures inform the packing advice; outfit combinations and illustrations are editorial suggestions.
Frequently asked questions
Start with your travel month. The 4 published guides cover May, June, July, August. Compare the average low as well as the high: among these months, May has the lowest average low at 9°C / 48°F, while July has the highest average high at 27°C / 81°F. For a trip spanning two months, read both lists before deciding which layers to bring.
No. They are monthly climate averages for planning, not temperatures promised for a particular day or hour. Check the local forecast close to departure and adjust your layers and rain protection. The source, station and averaging period are listed for each month where recorded; different stations or rain-day definitions can affect comparisons.
No. Treat the capsule as a set of clothing functions: walking shoes, a base outfit, weather protection and any change for dinner or a venue's dress code. Start with equivalents you own. Adjust quantities to your trip length and laundry access; the illustrations are outfit suggestions, not a shopping requirement.