Greenwich wave buoy monthly averages for 2018 last observation shown Data available: to
Average Wave Height
2 ft
0 — 5.6 ft
Average Wave period
6 secs
0 — 26 secs
Average Water temperature
13 °C
1.9 — 20.2 °C
Average Wind
WNW, 18 mph
0 — 58 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.
| Month | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 3 | 7 | SW | 21 | 10.0 | |
| 3 | 6 | NNE | 23 | 8.8 | |
| 2 | 6 | SSE | 19 | 8.1 | |
| 2 | 7 | SSE | 16 | 9.2 | |
| 1 | 6 | NNE | 13 | 11.1 | |
| 1 | 6 | NNE | 16 | 13.4 | |
| 1 | 6 | NW | 12 | 16.5 | |
| 2 | 6 | W | 15 | 17.8 | |
| 2 | 6 | WNW | 17 | 17.6 | |
| 2 | 6 | NNW | 19 | 16.5 | |
| 3 | 6 | SE | 22 | 14.0 | |
| 3 | 7 | SW | 20 | 12.1 |