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Weather in May in Oregon

Considering a trip to Oregon this May and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What is the weather like in Oregon in May?

Oregon is a region in the United States of America. The weather in Oregon in May can be quite varied, with temperatures that range from mild to warm and precipitation levels ranging from low to high.

Temperatures

The average maximum daytime temperatures vary from mild in Willamette National Forest at 14°C to warm in Boardman at 24°C. Nighttime temperatures generally drop to 8°C in Boardman and 3°C in Willamette National Forest.

Precipitation

In May, precipitation varies across different areas. From low rainfall in Bend with an average of 21 mm to high rainfall in Willamette National Forest with 146 mm.

Average sunshine

The city Portland usually sees around 276 hours of sunlight, indicating many sunny days.

For a closer look at May's conditions in Oregon, see the map below. For a more detailed look at Oregon's yearly weather, check out our Oregon climate page.

Where to go in Oregon in May

Find more information for the most popular destinations in the Oregon on the map below. Click on a destination dot for more detailes.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in May for the 5 most popular destinations in Oregon?

Portland

In May Portland generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 9°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Portland
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
16°C 
6°C 
221 hours 
77 mm 
17 days 
20°C 
9°C 
276 hours 
71 mm 
13 days 
June   >> June
>>  
23°C 
12°C 
290 hours 
45 mm 
11 days 
Climate in Portland

Seaside

In May Seaside generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 7°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Seaside
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
14°C 
4°C 
222 hours 
183 mm 
21 days 
poor 
16°C 
7°C 
278 hours 
116 mm 
16 days 
June   >> June
>>  
19°C 
9°C 
291 hours 
75 mm 
15 days 
Climate in Seaside

Cannon Beach

In May Cannon Beach generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 7°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Cannon Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
14°C 
5°C 
222 hours 
187 mm 
21 days 
poor 
16°C 
7°C 
278 hours 
123 mm 
17 days 
June   >> June
>>  
19°C 
10°C 
291 hours 
82 mm 
15 days 
Climate in Cannon Beach

Depoe Bay

In May Depoe Bay generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Depoe Bay
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
14°C 
5°C 
153 mm 
21 days 
16°C 
7°C 
91 mm 
15 days 
June   >> June
>>  
17°C 
9°C 
66 mm 
12 days 
Climate in Depoe Bay

Rockaway Beach

In May Rockaway Beach generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 7°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Rockaway Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
13°C 
4°C 
222 hours 
221 mm 
22 days 
poor 
17°C 
7°C 
278 hours 
131 mm 
17 days 
June   >> June
>>  
18°C 
9°C 
291 hours 
86 mm 
15 days 
Climate in Rockaway Beach

Is your destination not in the list? Have a look at other destinations in Oregon, in the United States of America.

Is May the best time to visit Oregon?

We believe that May is one of the best times to visit Oregon with overall perfect weather in Portland. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in May, June, July, August and September offering mostly perfect weather in Portland. The weather in January, March, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Oregon. Interested in the weather conditions in a specific month? Select the month below.

  • January      
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  • April      
  • May      
  • June      
  • July      
  • August      
  • September      
  • October      
  • November      
  • December      
  • Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.