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Philadelphia, US Coast Guard Station, Pa. water levels in 2025
Annual rank9 / 36
vs. average4.2 cm
Highest monthly peak1.73 mAugust 2025
Monthly mean vs. previous year
| Month | 2025 (cm) | 2024 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -17.0 | 27.9 | -44.9 | 1.34 |
| Feb | -10.8 | 24.0 | -34.8 | 1.35 |
| Mar | 5.4 | 24.4 | -19.0 | 1.31 |
| Apr | 7.0 | 36.5 | -29.5 | 1.30 |
| May | 25.5 | 31.5 | -6.0 | 1.62 |
| Jun | 23.0 | 17.5 | 5.5 | 1.60 |
| Jul | 21.6 | 16.6 | 5.0 | 1.48 |
| Aug | 27.6 | 21.2 | 6.4 | 1.73 |
| Sep | 29.1 | 31.9 | -2.8 | 1.54 |
| Oct | 27.6 | 17.1 | 10.5 | 1.48 |
| Nov | -6.9 | 8.1 | -15.0 | 1.36 |
| Dec | -7.5 | -4.0 | -3.5 | 1.53 |
Nearby years (cm vs. average)
+7.8
+7.3
+4.4
+13.5
+14.9
+4.2
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2025 annual mean water level ranked 9 of 36 years (4.2 cm vs. the period average).