Greenwich wave buoy monthly averages for 2021 last observation shown Data available: to
Average Wave Height
2 ft
0 — 15.4 ft
Average Wave period
7 secs
2 — 26 secs
Average Water temperature
13 °C
7.8 — 19.5 °C
Average Wind
WNW, 18 mph
0 — 49 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.
| Month | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 4 | 7 | SW | 23 | 11.6 | |
| 3 | 7 | NW | 20 | 14.1 | |
| 3 | 7 | SW | 21 | 16.2 | |
| 2 | 8 | NW | 16 | 17.4 | |
| 2 | 7 | W | 17 | 16.7 | |
| 1 | 5 | SW | 7 | 17.1 | |
| 1 | 6 | W | 11 | 13.6 | |
| 3 | 6 | SW | 20 | 10.5 | |
| 2 | 6 | NNE | 18 | 9.0 | |
| 2 | 7 | NNE | 18 | 8.8 | |
| 3 | 7 | ENE | 22 | 9.0 | |
| 4 | 7 | WNW | 21 | 9.4 |