Greenwich wave buoy daily averages for Aug 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
2 ft
0.7 — 6.2 ft
Average Wave period
7 secs
5 — 26 secs
Average Water temperature
18 °C
17.1 — 19.6 °C
Average Wind
WNW, 16 mph
1 — 33 mph
About Greenwich wave buoy
Greenwich (WMO 62305) is an offshore station in the southern North Sea/Thames approaches (50.4170°N, 0.0000°E). It is sited to monitor waves and weather affecting busy shipping lanes and coastal flood/sea-state forecasting for south‑east England. It reports wave height/period/direction and meteorological variables such as wind and pressure.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 4 | 7 | SW | 18 | 18.1 | |
| 3 | 6 | SW | 23 | 18.1 | |
| 4 | 6 | SW | 25 | 18.1 | |
| 3 | 7 | WSW | 19 | 18.1 | |
| 3 | 7 | SSW | 16 | 18.2 | |
| 2 | 9 | SW | 18 | 18.2 | |
| 1 | 8 | E | 12 | 18.3 | |
| 1 | 8 | E | 15 | 18.2 | |
| 1 | 9 | ESE | 9 | 18.4 | |
| 1 | 8 | NW | 11 | 18.2 | |
| 2 | 6 | NNE | 17 | 18.1 | |
| 3 | 6 | NE | 23 | 18.1 | |
| 2 | 6 | NE | 23 | 18.1 | |
| 1 | 6 | NE | 21 | 18.1 | |
| 2 | 5 | ENE | 22 | 18.0 | |
| 2 | 6 | NE | 21 | 18.0 | |
| 1 | 10 | N | 8 | 18.5 | |
| 1 | 10 | SW | 10 | 18.0 | |
| 1 | 10 | W | 8 | 17.8 | |
| 1 | 7 | SSW | 14 | 18.0 | |
| 1 | 11 | ENE | 16 | 17.9 | |
| 1 | 8 | NNE | 7 | 18.1 | |
| 1 | 7 | W | 14 | 17.7 | |
| 2 | 7 | W | 15 | 17.6 | |
| 1 | 9 | SW | 13 | 17.8 | |
| 1 | 8 | NE | 6 | 18.1 | |
| 3 | 6 | W | 22 | 17.5 | |
| 3 | 6 | WSW | 22 | 17.5 | |
| 2 | 6 | WSW | 20 | 17.5 | |
| 1 | 6 | WNW | 15 | 17.6 | |
| 1 | 6 | NNW | 16 | 17.5 |