Greenwich wave buoy daily averages for Oct 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
3 ft
0.7 — 9.2 ft
Average Wave period
7 secs
5 — 26 secs
Average Water temperature
16 °C
14.8 — 17.2 °C
Average Wind
WSW, 22 mph
1 — 48 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) |
|---|---|---|---|---|---|
| 1 | 9 | SSE | 7 | 17.0 | |
| 1 | 8 | S | 14 | 17.0 | |
| 4 | 6 | SSW | 30 | 16.9 | |
| 9 | 8 | WSW | 39 | 16.7 | |
| 7 | 7 | WNW | 28 | 16.5 | |
| 2 | 6 | W | 19 | 16.6 | |
| 1 | 8 | W | 11 | 16.6 | |
| 1 | 10 | NW | 10 | 16.5 | |
| 1 | 10 | NNW | 10 | 16.6 | |
| 1 | 12 | NNE | 6 | 16.5 | |
| 1 | 16 | ENE | 11 | 16.4 | |
| 1 | 6 | ENE | 19 | 16.4 | |
| 1 | 6 | ENE | 21 | 16.4 | |
| 1 | 6 | NE | 20 | 16.4 | |
| 2 | 6 | NNE | 20 | 16.2 | |
| 1 | 6 | NE | 20 | 16.3 | |
| 1 | 6 | ENE | 20 | 16.3 | |
| 1 | 5 | ESE | 19 | 16.2 | |
| 3 | 5 | S | 23 | 16.1 | |
| 5 | 6 | SSW | 32 | 16.1 | |
| 5 | 7 | WSW | 26 | 16.0 | |
| 2 | 7 | WSW | 17 | 15.9 | |
| 7 | 7 | W | 39 | 15.6 | |
| 7 | 7 | W | 31 | 15.3 | |
| 5 | 7 | WNW | 27 | 15.3 | |
| 5 | 6 | W | 27 | 15.1 | |
| 7 | 7 | W | 31 | 15.2 | |
| 6 | 7 | W | 30 | 15.2 | |
| 3 | 6 | SW | 23 | 15.1 | |
| 3 | 6 | SW | 25 | 14.9 | |
| 5 | 7 | S | 31 | 15.1 |