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Hilo water levels in 1991
Annual rank41 / 83
vs. average1.1 cm
Highest monthly peak0.74 mAugust 1991
Monthly mean vs. previous year
| Month | 1991 (cm) | 1990 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 0.3 | -6.7 | 7.0 | 0.68 |
| Feb | -2.1 | -5.5 | 3.4 | 0.57 |
| Mar | -7.3 | -7.0 | -0.3 | 0.46 |
| Apr | -10.3 | -5.1 | -5.2 | 0.40 |
| May | -5.8 | -10.6 | 4.8 | 0.53 |
| Jun | -5.8 | -10.9 | 5.1 | 0.54 |
| Jul | -1.8 | -7.6 | 5.8 | 0.59 |
| Aug | 4.6 | -3.0 | 7.6 | 0.74 |
| Sep | -2.4 | 0.6 | -3.0 | 0.53 |
| Oct | -0.6 | 2.8 | -3.4 | 0.54 |
| Nov | 7.0 | -3.9 | 10.9 | 0.66 |
| Dec | 4.0 | -0.3 | 4.3 | 0.70 |
Nearby years (cm vs. average)
-2.7
+3.4
+5.4
+1.9
-1.9
+1.1
+6.8
+7.2
+0.7
+4.8
+7.4
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1991 annual mean water level ranked 41 of 83 years (1.1 cm vs. the period average).