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Oceanographic Institution water levels in 2021
Annual rank4 / 88
vs. average16.2 cm
Highest monthly peak1.00 mFebruary 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 15.5 | 10.4 | 5.1 | 0.94 |
| Feb | 10.7 | 6.6 | 4.1 | 1.00 |
| Mar | -0.1 | 11.0 | -11.1 | 0.79 |
| Apr | 13.6 | 18.3 | -4.7 | 0.87 |
| May | 7.5 | 7.6 | -0.1 | 0.76 |
| Jun | 11.6 | 16.4 | -4.8 | 0.72 |
| Jul | 18.4 | 19.7 | -1.3 | 0.78 |
| Aug | 18.7 | 18.5 | 0.2 | 0.80 |
| Sep | 20.3 | 17.6 | 2.7 | 0.71 |
| Oct | 28.1 | 15.4 | 12.7 | 0.88 |
| Nov | 16.1 | 8.3 | 7.8 | 0.79 |
| Dec | 9.2 | 11.5 | -2.3 | 0.82 |
Nearby years (cm vs. average)
+11.9
+13.6
+13.5
+15.9
+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 2021 annual mean water level ranked 4 of 88 years (16.2 cm vs. the period average).