Greenwich wave buoy daily averages for Dec 2011 last observation shown Data available: to Monthly averages for
Average Wave Height
5 ft
1 — 11.5 ft
Average Wave period
7 secs
2 — 9 secs
Average Water temperature
12 °C
11.3 — 15.7 °C
Average Wind
W, 30 mph
8 — 54 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) |
|---|---|---|---|---|---|
| 5 | 7 | SW | 29 | 14.0 | |
| 3 | 7 | WNW | 21 | 13.8 | |
| 7 | 7 | W | 34 | 13.8 | |
| 5 | 7 | W | 28 | 13.7 | |
| 6 | 7 | WNW | 35 | 13.3 | |
| 5 | 7 | W | 33 | 13.3 | |
| 8 | 7 | WNW | 40 | 13.2 | |
| 6 | 6 | WSW | 34 | 13.2 | |
| 5 | 7 | WNW | 30 | 12.9 | |
| 2 | 6 | WNW | 18 | 12.7 | |
| 4 | 6 | SW | 26 | 12.7 | |
| 6 | 7 | WSW | 34 | 12.6 | |
| 10 | 8 | WSW | 39 | 12.5 | |
| 7 | 7 | WSW | 32 | 12.3 | |
| 9 | 8 | SW | 38 | 12.3 | |
| 7 | 7 | WNW | 35 | 12.1 | |
| 5 | 7 | NW | 27 | 12.0 | |
| 4 | 6 | NW | 27 | 11.8 | |
| 3 | 6 | W | 20 | 11.8 | |
| 4 | 6 | WNW | 27 | 11.9 | |
| 3 | 6 | W | 22 | 12.0 | |
| 3 | 6 | W | 26 | 12.0 | |
| 5 | 6 | WSW | 33 | 11.9 | |
| 5 | 7 | W | 30 | 11.6 | |
| 5 | 7 | WSW | 30 | 11.8 | |
| 4 | 6 | WSW | 24 | 11.8 | |
| 2 | 6 | SSW | 18 | 11.9 | |
| 5 | 7 | WSW | 32 | 11.6 | |
| 9 | 7 | W | 41 | 11.4 | |
| 5 | 7 | W | 25 | 11.4 | |
| 5 | 7 | W | 31 | 11.6 |