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Philadelphia, US Coast Guard Station, Pa. water levels in 2018
Annual rank5 / 36
vs. average9.3 cm
Highest monthly peak1.87 mSeptember 2018
Monthly mean vs. previous year
| Month | 2018 (cm) | 2017 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -18.6 | -2.8 | -15.8 | 1.48 |
| Feb | -1.4 | -6.6 | 5.2 | 1.35 |
| Mar | 13.1 | -14.9 | 28.0 | 1.66 |
| Apr | 8.9 | 21.2 | -12.3 | 1.82 |
| May | 18.2 | 22.0 | -3.8 | 1.56 |
| Jun | 22.3 | 17.0 | 5.3 | 1.42 |
| Jul | 20.2 | 19.4 | 0.8 | 1.49 |
| Aug | 26.3 | 19.5 | 6.8 | 1.56 |
| Sep | 38.6 | 19.1 | 19.5 | 1.87 |
| Oct | 19.8 | 13.4 | 6.4 | 1.57 |
| Nov | 19.0 | 6.8 | 12.2 | 1.87 |
| Dec | 19.5 | -11.4 | 30.9 | 1.64 |
Nearby years (cm vs. average)
-1.1
+1.1
-2.8
-0.1
+2.4
+9.3
+10.6
+7.8
+7.3
+4.4
+13.5
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2018 annual mean water level ranked 5 of 36 years (9.3 cm vs. the period average).