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Portland water levels in 2025
Annual rank5 / 114
vs. average11.9 cm
Highest monthly peak2.15 mNovember 2025
Monthly mean vs. previous year
| Month | 2025 (cm) | 2024 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 5.0 | 19.2 | -14.2 | 2.07 |
| Feb | 0.7 | 18.0 | -17.3 | 1.98 |
| Mar | 6.6 | 12.8 | -6.2 | 2.13 |
| Apr | 7.3 | 20.2 | -12.9 | 2.12 |
| May | 14.3 | 17.6 | -3.3 | 2.08 |
| Jun | 11.8 | 12.9 | -1.1 | 2.04 |
| Jul | 12.1 | 11.0 | 1.1 | 1.90 |
| Aug | 12.7 | 12.6 | 0.1 | 1.97 |
| Sep | 13.1 | 15.2 | -2.1 | 1.95 |
| Oct | 16.0 | 11.1 | 4.9 | 1.98 |
| Nov | 5.3 | 13.7 | -8.4 | 2.15 |
| Dec | 3.7 | 2.3 | 1.4 | 2.11 |
Nearby years (cm vs. average)
+11.0
+11.3
+10.3
+18.3
+16.8
+11.9
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2025 annual mean water level ranked 5 of 114 years (11.9 cm vs. the period average).