Greenwich wave buoy daily averages for Sep 2021 last observation shown Data available: to Monthly averages for
Average Wave Height
1 ft
0.7 — 2.3 ft
Average Wave period
8 secs
4 — 26 secs
Average Water temperature
17 °C
16.8 — 18.7 °C
Average Wind
NNE, 14 mph
0 — 29 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 | 6 | NE | 22 | 17.0 | |
| 1 | 6 | ENE | 22 | 17.0 | |
| 2 | 6 | NE | 22 | 17.1 | |
| 2 | 6 | NE | 24 | 17.2 | |
| 1 | 9 | ENE | 14 | 17.4 | |
| 1 | 14 | ENE | 10 | 17.7 | |
| 1 | 12 | ENE | 14 | 17.5 | |
| 1 | 9 | ENE | 15 | 17.5 | |
| 1 | 13 | S | 9 | 17.4 | |
| 1 | 6 | SW | 17 | 17.4 | |
| 2 | 6 | W | 20 | 17.3 | |
| 1 | 9 | WNW | 8 | 17.5 | |
| 1 | 7 | ENE | 19 | 17.4 | |
| 1 | 8 | NE | 9 | 17.5 | |
| 1 | 10 | NNW | 9 | 17.6 | |
| 1 | 9 | W | 6 | 17.6 | |
| 1 | 9 | SSE | 8 | 17.6 | |
| 1 | 8 | E | 10 | 17.5 | |
| 1 | 8 | WNW | 12 | 17.4 | |
| 2 | 6 | N | 17 | 17.4 | |
| 1 | 8 | NNE | 6 | 17.5 | |
| 1 | 9 | W | 6 | 17.5 | |
| 1 | 6 | W | 19 | 17.4 | |
| 1 | 6 | WSW | 16 | 17.5 | |
| 1 | 9 | SSE | 9 | 17.6 | |
| 1 | 7 | SSW | 14 | 17.5 | |
| 1 | 5 | S | 25 | 17.4 | |
| - | - | - | - | - | |
| - | - | - | - | - | |
| 2 | 7 | WSW | 16 | 16.8 |