Greenwich wave buoy daily averages for Jul 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
1 ft
0.7 — 3.3 ft
Average Wave period
9 secs
5 — 26 secs
Average Water temperature
17 °C
15.3 — 18.3 °C
Average Wind
W, 14 mph
2 — 31 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 | 10 | SW | 12 | 16.1 | |
| 1 | 8 | W | 13 | 15.7 | |
| 1 | 7 | NNW | 9 | 16.0 | |
| 1 | 9 | W | 11 | 16.3 | |
| 2 | 6 | WSW | 24 | 16.0 | |
| 2 | 6 | WSW | 16 | 16.0 | |
| 2 | 6 | NW | 16 | 16.1 | |
| 2 | 6 | WNW | 16 | 16.1 | |
| 1 | 9 | W | 11 | 16.3 | |
| 1 | 19 | WSW | 7 | 16.7 | |
| 1 | 24 | ENE | 9 | 17.0 | |
| 1 | 17 | ENE | 14 | 16.6 | |
| 1 | 11 | E | 13 | 16.6 | |
| 2 | 6 | SW | 20 | 16.5 | |
| 3 | 6 | SW | 22 | 16.3 | |
| 2 | 6 | WSW | 16 | 16.6 | |
| 1 | 7 | WSW | 10 | 16.6 | |
| 1 | 9 | NW | 6 | 17.2 | |
| 1 | 9 | W | 11 | 17.1 | |
| 2 | 6 | S | 16 | 16.9 | |
| 2 | 7 | SW | 16 | 16.9 | |
| 3 | 6 | WSW | 21 | 16.9 | |
| 1 | 8 | W | 10 | 17.2 | |
| 1 | 7 | NNW | 15 | 17.2 | |
| 1 | 8 | NW | 11 | 17.4 | |
| 1 | 7 | WSW | 15 | 17.2 | |
| 1 | 7 | NW | 13 | 17.1 | |
| 1 | 7 | WNW | 13 | 17.3 | |
| 1 | 7 | W | 11 | 17.2 | |
| 1 | 7 | WNW | 12 | 17.5 | |
| 1 | 6 | W | 16 | 17.4 |