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Portland Weather in May

Averages By Month

May Overview


May in Portland is mild and pleasant, with temperatures continuing to warm up as spring progresses. Average temperatures range from 47°F to 67°F (8°C to 19°C). Days are long, with around 14 hours of daylight, and sunshine increases to about 7 hours per day. Rain showers are infrequent, with an average of 1.5 inches (38 mm) of precipitation. Snowfall is unlikely. Wind speeds remain moderate, averaging around 8 mph. Visitors should pack layers, including a light jacket or sweater, waterproof clothing, and comfortable walking shoes. May in Portland offers a variety of outdoor activities, including attending the Portland Rose Festival, exploring the Portland Farmers Market, and hiking in the Columbia River Gorge to see the spring wildflowers.


High and Low Temperature in May °F

Water Temperature in May °F

Averages Portland

  J F M A M J J A S O N D

High °F

46° 50° 55° 61° 68° 73° 81° 81° 75° 64° 52° 46°

Low °F

36° 37° 39° 43° 48° 54° 59° 59° 54° 48° 41° 36°

Sun

1 3 4 6 7 6 10 8 7 4 2 1

Rain days

17 16 20 16 14 11 4 3 7 14 19 20

Water °F

50° 48° 47° 49° 51° 55° 58° 61° 61° 60° 56° 51°


Portland Weather by Month

Best Time to Visit Portland

The best time to visit Portland weather-wise is during the summer months, from June to August. During this time, the city experiences mild and sunny weather, with average temperatures ranging from 60°F to 80°F (16°C to 27°C). Summer in Portland is perfect for outdoor activities such as hiking in Forest Park, exploring the International Rose Test Garden, and attending outdoor festivals like the Oregon Brewers Festival. However, be prepared for higher tourist crowds, higher accommodation prices, and occasional heatwaves.

Spring (March to May) and fall (September to November) also offer favorable weather conditions, with mild temperatures and fewer tourist crowds compared to summer. Average highs range from 55°F to 70°F (13°C to 21°C) during these seasons. Visitors can explore attractions like the Portland Japanese Garden, visit the Portland Art Museum, and enjoy the changing colors of the trees in Washington Park. However, there is a possibility of rain showers, especially in spring, and shorter daylight hours compared to summer.

Winter (December to February) in Portland brings cool and rainy weather, with average temperatures ranging from 35°F to 50°F (2°C to 10°C). While winter is the least popular tourist season, it offers lower accommodation prices and festive holiday events like the Festival of Lights at the Grotto. Visitors can explore indoor attractions like Powell's City of Books, visit the Portland Saturday Market, and enjoy the city's culinary scene. However, be prepared for shorter daylight hours, frequent rain showers, and occasional winter storms.

Things to know about Portland

Portland, Oregon, is a vibrant vacation destination renowned for its lush green landscapes, thriving food scene, and eclectic culture. With a population of approximately 650,000 people, Portland offers a perfect blend of outdoor adventures, cultural experiences, and culinary delights, making it an ideal destination for travelers seeking a unique and diverse vacation experience.

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