Greenwich wave buoy daily averages for Jul 2011 last observation shown Data available: to Monthly averages for
Average Wave Height
2 ft
0.3 — 3.9 ft
Average Wave period
6 secs
4 — 8 secs
Average Water temperature
16 °C
14.2 — 18.1 °C
Average Wind
WNW, 15 mph
2 — 35 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.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 1 | 5 | NW | 11 | 14.7 | |
| 1 | 6 | ESE | 8 | 15.0 | |
| 1 | 6 | NNW | 7 | 15.1 | |
| 1 | 7 | ENE | 11 | 15.1 | |
| 1 | 6 | ESE | 9 | 15.0 | |
| 2 | 6 | SW | 20 | 14.9 | |
| 2 | 7 | SSW | 19 | 14.9 | |
| 3 | 6 | SW | 21 | 14.9 | |
| 2 | 6 | WSW | 19 | 15.0 | |
| 1 | 6 | WSW | 13 | 15.3 | |
| 1 | 6 | W | 11 | 15.7 | |
| 2 | 5 | NNE | 22 | 15.3 | |
| 2 | 6 | N | 16 | 15.3 | |
| 1 | 6 | WNW | 17 | 15.4 | |
| 1 | 6 | SW | 14 | 15.5 | |
| 2 | 5 | SW | 25 | 15.3 | |
| 4 | 6 | WSW | 29 | 15.2 | |
| 4 | 6 | WSW | 20 | 15.2 | |
| 2 | 6 | WSW | 13 | 15.5 | |
| 2 | 6 | WNW | 13 | 15.4 | |
| 1 | 6 | N | 12 | 15.5 | |
| 1 | 6 | NW | 16 | 15.7 | |
| 1 | 6 | WNW | 18 | 15.7 | |
| 2 | 5 | W | 23 | 15.7 | |
| 1 | 5 | WNW | 15 | 16.0 | |
| 1 | 7 | NNE | 9 | 16.5 | |
| 1 | 7 | NNW | 12 | 16.7 | |
| 1 | 7 | NW | 9 | 17.0 | |
| 1 | 7 | ENE | 9 | 17.0 | |
| 1 | 6 | E | 11 | 16.6 | |
| 1 | 6 | ESE | 12 | 16.3 |