Greenwich wave buoy monthly averages for 2020 last observation shown Data available: to
Average Wave Height
3 ft
0 — 7.2 ft
Average Wave period
6 secs
3 — 26 secs
Average Water temperature
13 °C
9.1 — 20.5 °C
Average Wind
W, 11 mph
0 — 41 mph
Chart showing grouped wave observations for Greenwich. Use the table on this page for a text version of the same measurements.
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 | 10.7 | |
| 5 | 7 | WSW | 21 | 9.8 | |
| 5 | 6 | SSW | 7 | 9.4 | |
| 2 | 6 | ENE | 4 | 9.8 | |
| 1 | 6 | NNW | 5 | 11.9 | |
| 1 | 6 | SSE | 5 | 14.3 | |
| 2 | 7 | WNW | 9 | 15.8 | |
| 2 | 5 | NNE | 16 | 17.7 | |
| 1 | 5 | WNW | 11 | 17.6 | |
| 3 | 6 | WNW | 13 | 15.7 | |
| 2 | 6 | WSW | 7 | 14.4 | |
| 4 | 6 | W | 15 | 11.9 |