Climate of Portland
Portland has a mediterranean climate. The summers are warm and dry, and the temperature is cold in the winter. The average annual temperature for Portland is 32° degrees and there is about 276 inch of rain in a year. It is dry for 167 days a year with an average humidity of 77% and an UV-index of 3.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 7°C and 27°C
- Night:the average nighttime temperature is between 1°C and 12°C
- Rain: it rains 171 days and there is a total of approximately 699 mm rainfall
- Snow: it snows an average of 6 days per year
- Sun hours: throughout the year there are 2660 sun hours
Maximum temperature: | between 7°C and 27°C |
Warmest month: | 27°C in July |
Coldest month: | 7°C in December |
Night temperature: | between 1°C and 12°C |
Dry days: | 188 days |
Days with rain: | 171 days |
Days with snow: | 6 days |
Total rain sum: | 699 mm |
Hours of sunshine: | 2660 hours |
Do you want to go to Portland?
These are the travel companies where you can book a trip to Portland:
Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Portland.
Precipitation graph
This graph shows the average amount of rainfall per month for Portland.
Climate table of Portland
In this climate table you can see at a glance what the average weather per month is for Portland. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Portland might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°F) | 46 | 47 | 53 | 58 | 67 | 72 | 80 | 81 | 74 | 62 | 51 | 44 |
Night temp. (°F) | 35 | 35 | 38 | 39 | 43 | 47 | 51 | 53 | 51 | 46 | 40 | 34 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (inch) | 34 | 31 | 32 | 22 | 14 | 11 | 2 | 3 | 13 | 33 | 37 | 43 |
Days with rain | 17 | 17 | 21 | 19 | 13 | 11 | 4 | 5 | 10 | 16 | 20 | 18 |
Days with snow | 1 | 2 | 2 | - | - | - | - | - | - | - | - | 1 |
Dry days | 13 | 9 | 8 | 11 | 18 | 19 | 27 | 26 | 20 | 15 | 10 | 12 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 4 | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 5 | 4 | 4 |
Wind force (Bft) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
UV-index | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 4 | 4 | 3 | 2 | 2 |
Best time to visit Portland
The best time to visit Portland in the state of Oregon is from May through September. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Portland is 81°F in August and the lowest is 44°F in December.
Climate of Portland by month
What is the average climate in a given month for Portland? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Portland weather experiences
Have you been to in Portland?
Leave your Portland weather experience for a chance to win $150!