Portland in may: average Weather, Temperature and Climate
Weather in Portland in may 2025
The weather in Portland in the month of may comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
good weather
Weather at 6am
54°F
Clear/Sunny
32% of time
25%
19%
15%
Weather at 12pm
67°F
Clear/Sunny
38% of time
29%
20%
8%
Weather at 6pm
59°F
Clear/Sunny
40% of time
29%
22%
6%
Weather at 3am
47°F
32%
18%
17%
15%
Evolution of daily average temperature and precipitation in Portland in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Portland in may.
The climate of Portland in may is good
The weather in may in Portland is wet (with 4.1in of precipitation over 7 days). The weather is better from the previous month since in april it receives an average of 5.9in of precipitation over 10 days.
The climate quite comfortable in this location this month. The high seasonal norm is 68°F. On average, the recorded minimum temperature is 54°F. Thus, the mean temperature average on this month of may in Portland is 61°F. Note that these seasonal averages are in contrast with those observed in Portland in the month of may with a maximum record of 95°F in 2018 and a minimum record of 40°F in 2010. You can expect to have about 20 days with temperatures over 65°F, or 65% of time.
On average, in Portland, the days of may last 14:57. The sun rises at 04:39 and sunset is at 19:36.
With a good weather, the month of may is advisable to go in that area in United States.
Seasonal average climate and temperature of Portland in may
Check below seasonal norms These datas are set from the weather statements of the past years of the month of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 61°F | ||||
| Highest temperature | 68°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 95°F (2018) | ||||
| Lowest record temperature | 40°F (2010) | ||||
| Number of days at +86°F | 2 day(s) (6%) | ||||
| Number of days at +65°F | 20 day(s) (65%) | ||||
| Sea temperature | |||||
| Average sea temperature | 54°F | ||||
| Lowest sea temperature | 49°F | ||||
| Highest sea temperature | 58°F | ||||
| Wind | |||||
| Wind speed | 11km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.1in | ||||
| Number of days with rainfall | 7 day(s) (23%) | ||||
| Record daily rainfall | 1.3in (2020) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 80% | ||||
| Visibility | 8.61km | ||||
| Cloud cover | 44% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:39 | ||||
| Time of sunset | 19:36 | ||||
| Length of day | 14:57 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last may?
Here is the day by day recorded weather in Portland in may 2024:
40°F to 58°F
45°F to 59°F
45°F to 52°F
41°F to 49°F
43°F to 47°F
45°F to 50°F
40°F to 56°F
40°F to 63°F
45°F to 77°F
54°F to 81°F
58°F to 81°F
54°F to 77°F
52°F to 65°F
47°F to 70°F
49°F to 74°F
50°F to 65°F
49°F to 63°F
43°F to 61°F
45°F to 58°F
43°F to 65°F
49°F to 52°F
47°F to 58°F
43°F to 63°F
47°F to 65°F
45°F to 58°F
49°F to 65°F
49°F to 72°F
54°F to 59°F
47°F to 63°F
45°F to 68°F
47°F to 72°F
Map: other cities in the United States (USA) in may
Cities near Portland:
| Salem (Oregon) in may | good weather |
| Lincoln City (Oregon) in may | tolerable weather |
| Long Beach (Washington) in may | tolerable weather |
| Newport (Oregon) in may | tolerable weather |
| Ocean Park (Washington) in may | tolerable weather |
| Mount Rainier National Park (Washington) in may | very bad weather |
| Westport (Washington) in may | good weather |
| Seattle in may | good weather |
| Coos Bay in may | tolerable weather |
| Crater Lake (Oregon) in may | very bad weather |
| La Push (Washington) in may | tolerable weather |
| Boise (Idaho) in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Portland
perfect weather
good
tolerable
bad
very bad
Weather data for Portland in may:
Weather data for Portland for may are derived from an average of the weather forecast since 2009 in Portland. There is a margin of error and these forecasts are to be considered as general information only. The weather in Portland can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Portland.