M4 wave buoy monthly averages for 2024 last observation shown Data available: to
Average Wave Height
10 ft
2.3 — 36.1 ft
Average Wave period
7 secs
4 — 12 secs
Average Water temperature
12 °C
10 — 15.3 °C
Average Wind
W, 18 mph
2 — 56 mph
About M4 wave buoy
M4 is an offshore data buoy in the Atlantic approaches (55.0000°N, 10.0000°W). It supports marine forecasting by providing real‑time sea‑state and weather observations in open water. It typically reports directional waves and meteorology.
| Month | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 15 | 8 | WSW | 22 | 11.6 | |
| 10 | 7 | SSW | 18 | 12.9 | |
| 11 | 7 | SSW | 20 | 13.3 | |
| 8 | 6 | N | 16 | 14.0 | |
| 10 | 6 | SW | 19 | 14.0 | |
| 6 | 6 | W | 14 | 13.7 | |
| 8 | 6 | W | 17 | 12.9 | |
| 6 | 6 | N | 13 | 12.5 | |
| 10 | 7 | NW | 17 | 10.6 | |
| 12 | 7 | ESE | 20 | 10.1 | |
| 14 | 8 | WSW | 21 | 10.6 | |
| 14 | 8 | W | 21 | 10.6 |