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Apra Harbor, Guam water levels in 2018
Annual rank23 / 73
vs. average4.8 cm
Highest monthly peak0.71 mSeptember 2018
Monthly mean vs. previous year
| Month | 2018 (cm) | 2017 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 13.2 | 5.0 | 8.2 | 0.56 |
| Feb | 15.7 | 6.3 | 9.4 | 0.57 |
| Mar | 19.2 | 9.6 | 9.6 | 0.57 |
| Apr | 16.6 | 13.2 | 3.4 | 0.52 |
| May | 11.9 | 18.1 | -6.2 | 0.48 |
| Jun | 12.3 | 18.8 | -6.5 | 0.52 |
| Jul | 12.2 | 20.5 | -8.3 | 0.56 |
| Aug | 10.8 | 27.3 | -16.5 | 0.54 |
| Sep | 7.7 | 20.5 | -12.8 | 0.71 |
| Oct | -4.6 | 15.9 | -20.5 | 0.38 |
| Nov | -10.8 | 11.1 | -21.9 | 0.32 |
| Dec | -7.5 | 12.4 | -19.9 | 0.29 |
Nearby years (cm vs. average)
+14.8
+5.9
-5.2
-0.7
+11.6
+4.8
+3.3
+6.7
+17.2
+15.9
+7.3
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2018 annual mean water level ranked 23 of 73 years (4.8 cm vs. the period average).