Tide TablesHome › Tide tables & water levels › San Juan
San Juan water levels in 1999
Annual rank38 / 57
vs. average-2.6 cm
Highest monthly peak0.37 mJuly 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -3.1 | 6.7 | -9.8 | 0.32 |
| Feb | -1.0 | 6.7 | -7.7 | 0.29 |
| Mar | -4.1 | 1.0 | -5.1 | 0.25 |
| Apr | -3.3 | -2.0 | -1.3 | 0.28 |
| May | -2.8 | 2.7 | -5.5 | 0.34 |
| Jun | 2.1 | 6.4 | -4.3 | – |
| Jul | 0.6 | 5.0 | -4.4 | 0.37 |
| Aug | 7.5 | 4.6 | 2.9 | – |
| Sep | 3.7 | 7.9 | -4.2 | 0.34 |
| Oct | 1.3 | 9.4 | -8.1 | 0.31 |
| Nov | -2.2 | 2.4 | -4.6 | 0.36 |
| Dec | -14.1 | -6.5 | -7.6 | 0.26 |
Nearby years (cm vs. average)
+2.0
-3.0
-3.3
-0.9
+2.4
-2.6
-3.4
+2.5
-0.8
+3.6
-0.8
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 38 of 57 years (-2.6 cm vs. the period average).