M4 wave buoy daily averages for Jul 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
6 ft
2.3 — 11.5 ft
Average Wave period
6 secs
4 — 8 secs
Average Water temperature
14 °C
12.6 — 15.3 °C
Average Wind
W, 14 mph
2 — 31 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) |
|---|---|---|---|---|---|
| 7 | 5 | WNW | 17 | 12.7 | |
| 9 | 7 | WSW | 18 | 12.8 | |
| 10 | 6 | W | 23 | 12.8 | |
| - | - | - | - | - | |
| 9 | 7 | W | 15 | 12.7 | |
| 6 | 5 | NW | 14 | 12.8 | |
| 5 | 6 | NW | 8 | 13.1 | |
| 4 | 5 | E | 11 | 13.2 | |
| 4 | 4 | NE | 16 | 13.2 | |
| 6 | 5 | N | 19 | 13.2 | |
| 5 | 5 | N | 15 | 13.5 | |
| 3 | 5 | NNW | 12 | 13.7 | |
| 4 | 5 | NNE | 13 | 13.9 | |
| 5 | 6 | NNE | 9 | 14.2 | |
| 4 | 6 | N | 8 | 14.4 | |
| 3 | 5 | WSW | 11 | 14.4 | |
| 5 | 5 | S | 18 | 14.2 | |
| 5 | 5 | WSW | 11 | 13.9 | |
| 7 | 5 | S | 18 | 13.8 | |
| 6 | 6 | WNW | 14 | 13.9 | |
| 5 | 6 | SW | 11 | 13.9 | |
| 4 | 6 | NE | 7 | 14.0 | |
| 5 | 6 | ENE | 6 | 14.1 | |
| 5 | 6 | S | 15 | 14.2 | |
| 6 | 5 | SW | 18 | 13.8 | |
| 7 | 6 | SW | 17 | 13.9 | |
| 7 | 7 | WNW | 12 | 14.2 | |
| 5 | 6 | SSW | 14 | 14.2 | |
| 8 | 6 | SW | 18 | 14.1 | |
| 7 | 7 | W | 9 | 14.3 | |
| 6 | 7 | SSE | 9 | 15.0 |