Greenwich wave buoy daily averages for May 2011 last observation shown Data available: to Monthly averages for
Average Wave Height
2 ft
0.7 — 4.9 ft
Average Wave period
6 secs
4 — 10 secs
Average Water temperature
12 °C
10.5 — 13.6 °C
Average Wind
WSW, 19 mph
2 — 38 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) |
|---|---|---|---|---|---|
| 2 | 5 | NE | 27 | 10.7 | |
| 4 | 6 | NE | 32 | 10.7 | |
| 4 | 6 | ENE | 30 | 10.6 | |
| 2 | 5 | ENE | 22 | 10.7 | |
| 1 | 6 | ESE | 16 | 11.0 | |
| 2 | 8 | SE | 15 | 11.1 | |
| 2 | 8 | SE | 15 | 11.2 | |
| 1 | 8 | SSW | 13 | 11.2 | |
| 3 | 9 | S | 12 | 11.6 | |
| 3 | 9 | W | 9 | 11.9 | |
| 2 | 8 | WSW | 12 | 11.5 | |
| 1 | 6 | W | 20 | 11.4 | |
| 1 | 6 | W | 14 | 11.6 | |
| 1 | 5 | WNW | 21 | 11.5 | |
| 2 | 5 | WNW | 22 | 11.5 | |
| 2 | 5 | W | 25 | 11.6 | |
| 2 | 5 | W | 21 | 11.7 | |
| 1 | 5 | SW | 18 | 11.7 | |
| 1 | 6 | WNW | 9 | 12.1 | |
| 1 | 6 | W | 16 | 11.9 | |
| 1 | 6 | SW | 8 | 12.4 | |
| 3 | 6 | WSW | 25 | 12.0 | |
| 3 | 6 | WSW | 22 | 12.1 | |
| 3 | 6 | W | 23 | 12.2 | |
| 1 | 7 | ESE | 10 | 12.7 | |
| 2 | 6 | WSW | 29 | 12.6 | |
| 3 | 6 | WNW | 22 | 12.4 | |
| 3 | 6 | WSW | 26 | 12.3 | |
| 3 | 6 | WSW | 24 | 12.5 | |
| 1 | 6 | WSW | 12 | 12.6 | |
| 2 | 5 | WNW | 23 | 12.6 |