Water temperature in Portland (OR) in October
Is it warm enough to swim in Portland in October? Average water temperature in Portland in October is 57.9°F and therefore is not suitable for comfortable swimming. The warmest water in Portland in October is 69.8°F, and the coldest is 48.2°F. To find out the water temperature today and in the coming days, go to Current water temperature in Portland
Changes water temperature in Portland in October 2025, 2024
To get an accurate forecast for the water temperature in Portland for any chosen month, compare two years within a 10 year range using the chart below.
You can choose any other years:
| Day | 2025 | 2024 |
|---|---|---|
| October 1 | 60.8°F | 60.8°F |
| October 2 | 60.8°F | 59°F |
| October 3 | 59°F | 57.2°F |
| October 4 | 59°F | 57.2°F |
| October 5 | 59°F | 59°F |
| October 6 | 59°F | 59°F |
| October 7 | 59°F | 59°F |
| October 8 | 59°F | 59°F |
| October 9 | 57.2°F | 59°F |
| October 10 | 57.2°F | 59°F |
| October 11 | 57.2°F | 59°F |
| October 12 | 53.6°F | 59°F |
| October 13 | 53.6°F | 59°F |
| October 14 | 53.6°F | 59°F |
| October 15 | 51.8°F | 59°F |
| Day | 2025 | 2024 |
|---|---|---|
| October 16 | 51.8°F | 57.2°F |
| October 17 | 51.8°F | 57.2°F |
| October 18 | 53.6°F | 57.2°F |
| October 19 | 53.6°F | 55.4°F |
| October 20 | 53.6°F | 55.4°F |
| October 21 | 53.6°F | 53.6°F |
| October 22 | 51.8°F | |
| October 23 | 51.8°F | |
| October 24 | 51.8°F | |
| October 25 | 51.8°F | |
| October 26 | 51.8°F | |
| October 27 | 51.8°F | |
| October 28 | 51.8°F | |
| October 29 | 51.8°F | |
| October 30 | 51.8°F | |
| October 31 | 50°F |
Portland water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
