Greenwich wave buoy daily averages for Dec 2017 last observation shown Data available: to Monthly averages for
Average Wave Height
4 ft
0 — 10.5 ft
Average Wave period
6 secs
0 — 10 secs
Average Water temperature
11 °C
10.1 — 18.2 °C
Average Wind
WNW, 25 mph
2 — 60 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) |
|---|---|---|---|---|---|
| 3 | 5 | N | 32 | 12.1 | |
| 1 | 5 | NNW | 15 | 12.2 | |
| 1 | 4 | NNW | 18 | 12.4 | |
| 1 | 4 | NNW | 17 | 12.4 | |
| 1 | 5 | WNW | 16 | 12.4 | |
| 2 | 6 | SW | 23 | 12.4 | |
| 8 | 7 | SSW | 39 | 12.2 | |
| 7 | 7 | NW | 34 | 11.6 | |
| 3 | 6 | WNW | 20 | 11.5 | |
| 5 | 7 | S | 28 | 11.5 | |
| 7 | 7 | NNE | 33 | 11.3 | |
| 3 | 8 | W | 19 | 11.2 | |
| 7 | 7 | WSW | 36 | 11.4 | |
| 8 | 8 | W | 31 | 11.1 | |
| 5 | 6 | NW | 33 | 11.0 | |
| 3 | 6 | NNW | 24 | 10.8 | |
| 2 | 6 | WNW | 21 | 10.9 | |
| 2 | 6 | N | 17 | 11.0 | |
| 1 | 7 | W | 14 | 10.9 | |
| 1 | 7 | WNW | 16 | 11.0 | |
| 2 | 7 | W | 20 | 11.1 | |
| 2 | 7 | WNW | 13 | 11.1 | |
| 2 | 6 | W | 18 | 11.1 | |
| 3 | 6 | WSW | 25 | 11.0 | |
| 6 | 7 | SSW | 36 | 11.0 | |
| 7 | 7 | SW | 36 | 10.7 | |
| 7 | 7 | WNW | 35 | 10.5 | |
| 4 | 7 | WNW | 21 | 10.6 | |
| 5 | 7 | SW | 32 | 10.4 | |
| 7 | 7 | WSW | 30 | 10.6 | |
| 8 | 7 | SW | 33 | 10.6 |