Water temperature in Portland (OR) in March
Is it warm enough to swim in Portland in March? Average water temperature in Portland in March is 45.9°F and therefore is not suitable for comfortable swimming. The warmest water in Portland in March is 55.4°F, and the coldest is 37.4°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 March 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 |
|---|---|---|
| March 1 | 50°F | 42.8°F |
| March 2 | 50°F | 41°F |
| March 3 | 50°F | 41°F |
| March 4 | 48.2°F | 41°F |
| March 5 | 48.2°F | 39.2°F |
| March 6 | 48.2°F | 41°F |
| March 7 | 48.2°F | 41°F |
| March 8 | 46.4°F | 42.8°F |
| March 9 | 46.4°F | 42.8°F |
| March 10 | 46.4°F | 44.6°F |
| March 11 | 46.4°F | 44.6°F |
| March 12 | 46.4°F | 46.4°F |
| March 13 | 46.4°F | 48.2°F |
| March 14 | 44.6°F | 50°F |
| March 15 | 44.6°F | 50°F |
| Day | 2025 | 2024 |
|---|---|---|
| March 16 | 44.6°F | 51.8°F |
| March 17 | 44.6°F | 53.6°F |
| March 18 | 44.6°F | 55.4°F |
| March 19 | 46.4°F | 55.4°F |
| March 20 | 46.4°F | 55.4°F |
| March 21 | 48.2°F | 55.4°F |
| March 22 | 48.2°F | 53.6°F |
| March 23 | 48.2°F | 51.8°F |
| March 24 | 50°F | 50°F |
| March 25 | 53.6°F | 50°F |
| March 26 | 55.4°F | 50°F |
| March 27 | 55.4°F | 50°F |
| March 28 | 55.4°F | 50°F |
| March 29 | 55.4°F | 50°F |
| March 30 | 51.8°F | 50°F |
| March 31 | 50°F | 51.8°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
