M4 wave buoy daily averages for Mar 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
11 ft
4.3 — 19.4 ft
Average Wave period
7 secs
5 — 10 secs
Average Water temperature
10 °C
9.4 — 10.6 °C
Average Wind
ESE, 20 mph
2 — 36 mph
Chart showing grouped wave observations for M4. Use the table on this page for a text version of the same measurements.
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.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 17 | 9 | NNE | 18 | 10.5 | |
| 17 | 8 | N | 28 | 10.5 | |
| 12 | 7 | WNW | 19 | 10.4 | |
| 9 | 6 | ESE | 26 | 10.4 | |
| 12 | 7 | S | 23 | 10.4 | |
| 12 | 7 | SE | 27 | 10.4 | |
| 13 | 7 | SE | 24 | 10.4 | |
| 10 | 6 | ESE | 25 | 10.3 | |
| 8 | 6 | ENE | 24 | 10.2 | |
| 7 | 6 | ENE | 13 | 10.1 | |
| 5 | 6 | S | 11 | 10.0 | |
| 6 | 6 | SSE | 14 | 10.0 | |
| 11 | 7 | WSW | 23 | 10.2 | |
| 8 | 6 | ENE | 16 | 10.1 | |
| 10 | 7 | NNE | 15 | 9.8 | |
| 8 | 6 | SSE | 22 | 9.6 | |
| 9 | 7 | SSW | 16 | 9.9 | |
| 14 | 7 | SSW | 24 | 10.2 | |
| 11 | 8 | NW | 12 | 10.2 | |
| 10 | 8 | WNW | 14 | 10.3 | |
| 16 | 7 | WSW | 28 | 10.3 | |
| 19 | 8 | WNW | 28 | 10.4 | |
| 18 | 8 | NW | 23 | 10.3 | |
| 13 | 8 | SSE | 16 | 10.2 | |
| 11 | 6 | ENE | 25 | 10.2 | |
| 11 | 7 | NE | 24 | 9.9 | |
| 13 | 7 | E | 26 | 9.8 | |
| 12 | 8 | ESE | 16 | 9.7 | |
| 9 | 7 | SE | 15 | 9.5 | |
| 10 | 7 | SSE | 17 | 9.5 | |
| 9 | 7 | E | 17 | 9.7 |