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Oceanographic Institution water levels in 2025
Annual rank3 / 88
vs. average17.6 cm
Highest monthly peak0.89 mAugust 2025
Monthly mean vs. previous year
| Month | 2025 (cm) | 2024 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 7.2 | 21.0 | -13.8 | 0.87 |
| Feb | 5.2 | 22.0 | -16.8 | 0.83 |
| Mar | 10.7 | 16.3 | -5.6 | 0.83 |
| Apr | 10.2 | 23.2 | -13.0 | 0.78 |
| May | 17.4 | 22.6 | -5.2 | 0.84 |
| Jun | 18.0 | 18.3 | -0.3 | 0.76 |
| Jul | 19.9 | 18.0 | 1.9 | 0.72 |
| Aug | 22.9 | 20.9 | 2.0 | 0.89 |
| Sep | 24.3 | 26.3 | -2.0 | 0.77 |
| Oct | 28.9 | 22.1 | 6.8 | 0.87 |
| Nov | 11.6 | 22.7 | -11.1 | 0.75 |
| Dec | 10.8 | 8.5 | 2.3 | 0.81 |
Nearby years (cm vs. average)
+15.5
+16.2
+15.3
+22.8
+22.2
+17.6
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2025 annual mean water level ranked 3 of 88 years (17.6 cm vs. the period average).