Portland weather in May
May in Portland averages 69°F by day and 49°F at night, with 2.5 inches of precipitation. It is the 5th-warmest and 8th-wettest month of the year here.
- Average high
- 69°F+7° vs April
- Average low
- 49°F0 nights below freezing
- Precipitation
- 2.5 in7 days with 0.1 in. or more
- Snow
- 0.0 in0 days at 90°F+
Is May a good time to visit Portland?
Yes. May is one of the most comfortable months in Portland by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are April to October.
Get outside in Portland in May
May is made for being outside. Try Mill Ends Park, Oregon Zoo, Forest Park, Lan Su Chinese Garden. All things to do in Portland.
On May 15 the sun rises at 5:40 am and sets at 8:34 pm, giving 14h 55m of daylight. Daylight all year.
What to pack for Portland in May
- T-shirts and a light jacket or sweater
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
May nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Portland | 69°F | 49°F | 2.5 in | |
| Beaverton, OR | 7 mi | 69°F | 49°F | 2.5 in |
| Vancouver, WA | 8 mi | 69°F | 49°F | 2.5 in |
| Gresham, OR | 13 mi | 69°F | 49°F | 2.5 in |
| Hillsboro, OR | 14 mi | 69°F | 45°F | 2.0 in |
| Salem, OR | 43 mi | 69°F | 46°F | 2.3 in |
| Eugene, OR | 103 mi | 68°F | 44°F | 2.5 in |
Frequently asked questions
What is the weather like in Portland in May?
In May, Portland averages a high of 69°F and a low of 49°F, with 2.5 inches of precipitation (NOAA 1991-2020 normals).
Is May a good time to visit Portland?
Yes. May is one of Portland's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Portland in May?
Rarely. The May snowfall normal is under half an inch.
Before and after: Portland in April and Portland in June. All twelve months: Portland weather by month.
NOAA NCEI 1991-2020 climate normals, station Portland Intl. Airport, OR, 5.9 miles from the city center.