Greenwich wave buoy daily averages for Dec 2021 last observation shown Data available: to Monthly averages for
Average Wave Height
4 ft
0.7 — 8.2 ft
Average Wave period
7 secs
5 — 16 secs
Average Water temperature
12 °C
10.6 — 12.7 °C
Average Wind
SW, 22 mph
2 — 46 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) |
|---|---|---|---|---|---|
| 6 | 7 | NW | 30 | 12.5 | |
| 3 | 6 | NNW | 24 | 11.9 | |
| 3 | 6 | WSW | 19 | 12.0 | |
| 5 | 7 | W | 26 | 12.2 | |
| 6 | 7 | NW | 32 | 11.9 | |
| 4 | 6 | W | 25 | 11.8 | |
| 5 | 6 | SSW | 30 | 11.8 | |
| 7 | 7 | W | 32 | 11.6 | |
| 5 | 7 | WSW | 28 | 11.6 | |
| 6 | 7 | NW | 35 | 11.5 | |
| 3 | 7 | W | 19 | 11.5 | |
| 3 | 6 | SW | 22 | 11.9 | |
| 3 | 7 | SSW | 19 | 11.9 | |
| 2 | 7 | SW | 16 | 11.8 | |
| 2 | 7 | SW | 17 | 11.8 | |
| 1 | 9 | NW | 8 | 11.8 | |
| 2 | 8 | ENE | 22 | 11.7 | |
| 3 | 5 | ENE | 24 | 11.4 | |
| 1 | 6 | ENE | 19 | 11.3 | |
| 2 | 6 | ENE | 21 | 11.1 | |
| 1 | 6 | E | 15 | 11.0 | |
| 2 | 5 | SSE | 19 | 10.7 | |
| 3 | 6 | SSW | 23 | 11.0 | |
| 3 | 8 | SSW | 16 | 11.2 | |
| 3 | 8 | SSE | 13 | 11.3 | |
| 2 | 7 | SSW | 12 | 11.2 | |
| 3 | 7 | S | 23 | 11.2 | |
| 6 | 7 | WSW | 28 | 11.3 | |
| 5 | 8 | SW | 25 | 11.4 | |
| 5 | 7 | SSW | 27 | 11.5 | |
| 4 | 7 | SSW | 25 | 11.5 |