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Sand Island, Midway Islands water levels in 2021
Annual rank4 / 73
vs. average9.1 cm
Highest monthly peak0.63 mFebruary 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 10.8 | 9.7 | 1.1 | 0.54 |
| Feb | 7.2 | 0.5 | 6.7 | 0.63 |
| Mar | -0.6 | 1.3 | -1.9 | 0.28 |
| Apr | 4.1 | 7.1 | -3.0 | 0.36 |
| May | 3.3 | 3.0 | 0.3 | 0.34 |
| Jun | 12.1 | 0.8 | 11.3 | 0.49 |
| Jul | 13.1 | -2.9 | 16.0 | 0.40 |
| Aug | 12.6 | 1.7 | 10.9 | 0.34 |
| Sep | 10.5 | 12.7 | -2.2 | 0.31 |
| Oct | 16.6 | 12.2 | 4.4 | 0.44 |
| Nov | 19.3 | 1.0 | 18.3 | 0.47 |
| Dec | 18.2 | 9.5 | 8.7 | 0.55 |
Nearby years (cm vs. average)
+5.0
+7.9
+7.0
+9.5
+3.2
+9.1
+8.6
+10.7
+5.2
+7.4
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 73 years (9.1 cm vs. the period average).