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Charleston water levels in 2021
Annual rank27 / 54
vs. average-0.1 cm
Highest monthly peak1.88 mJanuary 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 13.6 | 16.2 | -2.6 | 1.88 |
| Feb | -0.4 | -7.0 | 6.6 | 1.44 |
| Mar | -4.8 | -1.7 | -3.1 | 1.42 |
| Apr | -11.0 | -6.2 | -4.8 | 1.46 |
| May | -14.1 | 1.4 | -15.5 | 1.53 |
| Jun | -2.4 | -7.5 | 5.1 | 1.54 |
| Jul | -6.2 | -6.4 | 0.2 | 1.35 |
| Aug | -2.4 | -4.5 | 2.1 | 1.37 |
| Sep | -0.6 | 4.4 | -5.0 | 1.23 |
| Oct | 7.3 | -3.8 | 11.1 | 1.52 |
| Nov | 6.5 | 0.6 | 5.9 | 1.72 |
| Dec | 17.6 | 3.8 | 13.8 | 1.66 |
Nearby years (cm vs. average)
+6.2
+4.9
+0.4
+3.9
-1.3
-0.1
+0.7
+7.6
+5.3
+2.3
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2021 annual mean water level ranked 27 of 54 years (-0.1 cm vs. the period average).