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Galveston, Galveston Channel water levels in 2021
Annual rank5 / 122
vs. average42.6 cm
Highest monthly peak1.13 mSeptember 2021
Monthly mean vs. previous year
| Month | 2021 (cm) | 2020 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -2.2 | 15.7 | -17.9 | 0.53 |
| Feb | 5.3 | 6.3 | -1.0 | 0.54 |
| Mar | 18.4 | 17.6 | 0.8 | 0.82 |
| Apr | 29.4 | 31.7 | -2.3 | 0.95 |
| May | 31.9 | 26.5 | 5.4 | 0.92 |
| Jun | 26.4 | 30.1 | -3.7 | 0.66 |
| Jul | 16.6 | 21.0 | -4.4 | 0.62 |
| Aug | 21.8 | 22.0 | -0.2 | 0.68 |
| Sep | 28.5 | 46.0 | -17.5 | 1.13 |
| Oct | 32.3 | 35.6 | -3.3 | 0.83 |
| Nov | 26.5 | 32.5 | -6.0 | 0.65 |
| Dec | 19.0 | 4.3 | 14.7 | 0.53 |
Nearby years (cm vs. average)
+44.5
+40.7
+37.0
+45.2
+45.6
+42.6
+40.0
+44.1
+41.2
+34.4
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2021 annual mean water level ranked 5 of 122 years (42.6 cm vs. the period average).