When is the best time to visit Portland?
- The best time for a sun tanning holiday is July, August, September. Average maximum temperatures are up to +82°F in August and it has 12 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during May - October.
- If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in Portland in different months
In August the weather is great. There are an average of 12 sunny days in August and the temperature ranges from +57°F to +82°F.
May, June, July, September usually has good weather. Average maximum temperature reaches +82°F during July.
In January, February, March, April, October, November the weather is average. Expect around 111 rainy days, and the precipitation amounts to approximately 180 mm in November.
December bring not the best weather. December is the coldest month with the temperature going down to +37°F.
Climate in Portland
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +61°F | +68°F | +79°F | +88°F | +100°F | +115°F | +108°F | +106°F | +106°F | +90°F | +70°F | +64°F |
| Average Maximum Temperature | |||||||||||
| +46°F | +50°F | +57°F | +63°F | +70°F | +75°F | +82°F | +82°F | +77°F | +64°F | +52°F | +46°F |
| Minimum Temperature | |||||||||||
| +9°F | 0°F | +19°F | +28°F | +34°F | +39°F | +43°F | +45°F | +37°F | +28°F | +10°F | 0°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 84 | 81 | 79 | 75 | 72 | 69 | 64 | 63 | 68 | 78 | 84 | 85 |
| Rain, mm | |||||||||||
| 157 | 132 | 153 | 145 | 79 | 59 | 37 | 16 | 49 | 105 | 180 | 187 |
| Snow, mm | |||||||||||
| 13 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 11 |
| Average wind speed, m/s | |||||||||||
| 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| Sunny Days | |||||||||||
| 2 | 3 | 2 | 2 | 3 | 5 | 13 | 12 | 10 | 5 | 2 | 2 |
| Cloud Days | |||||||||||
| 8 | 6 | 7 | 7 | 11 | 12 | 11 | 12 | 10 | 9 | 7 | 8 |
| Rainy Days | |||||||||||
| 18 | 16 | 21 | 20 | 16 | 12 | 7 | 6 | 10 | 16 | 20 | 18 |
| Snowy Days | |||||||||||
| 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
Average Temperature
Humidity
Rain
Snow
FAQ
What is the hottest month in Portland?
What is the coldest month in Portland?
Is Portland worth visiting in winter?
When does it rain the least in Portland?
Other cities in USA
Monthly weather in Portland
Source of the data
For this page, we’ve looked at the typical weather in Portland, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.