Greenwich wave buoy daily averages for Dec 2020 last observation shown Data available: to Monthly averages for
Average Wave Height
4 ft
1.3 — 6.6 ft
Average Wave period
6 secs
5 — 8 secs
Average Water temperature
12 °C
10.9 — 12.9 °C
Average Wind
W, 15 mph
0 — 32 mph
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 | 8 | - | 10.9 | ||
| 5 | 6 | SW | 24 | 11.1 | |
| 2 | 5 | NNW | 21 | 11.2 | |
| 7 | 7 | - | 12.2 | ||
| 5 | 7 | SW | 22 | 12.2 | |
| 3 | 6 | - | 12.2 | ||
| 1 | 6 | W | 11 | 12.0 | |
| 6 | 6 | ESE | 32 | 12.2 | |
| 3 | 5 | NNW | 24 | 12.9 |