M4 wave buoy daily averages for May 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
6 ft
2.3 — 9.5 ft
Average Wave period
6 secs
4 — 10 secs
Average Water temperature
13 °C
10.8 — 14.7 °C
Average Wind
NNE, 13 mph
2 — 26 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 | 6 | ESE | 18 | 11.0 | |
| 5 | 5 | NNE | 15 | 11.3 | |
| 4 | 5 | SSE | 7 | 11.8 | |
| 3 | 5 | WSW | 9 | 11.8 | |
| 3 | 5 | W | 10 | 11.7 | |
| 5 | 5 | N | 16 | 11.8 | |
| 5 | 6 | E | 9 | 11.8 | |
| 6 | 5 | SSW | 19 | 11.7 | |
| 7 | 6 | S | 11 | 11.6 | |
| 6 | 6 | SSW | 12 | 11.8 | |
| 5 | 5 | S | 9 | 12.0 | |
| 8 | 9 | WSW | 6 | 12.4 | |
| 6 | 6 | NE | 17 | 12.2 | |
| 7 | 6 | NE | 14 | 12.4 | |
| 7 | 6 | NE | 8 | 13.0 | |
| 5 | 6 | ESE | 6 | 13.4 | |
| 8 | 5 | N | 22 | 12.7 | |
| 5 | 5 | N | 13 | 12.9 | |
| 4 | 6 | NNE | 8 | 13.2 | |
| 3 | 5 | SE | 9 | 13.8 | |
| 4 | 6 | NNW | 7 | 14.2 | |
| 8 | 6 | NNW | 21 | 13.5 | |
| 8 | 6 | NNW | 19 | 13.1 | |
| 5 | 6 | WNW | 9 | 13.2 | |
| 8 | 6 | SE | 19 | 13.1 | |
| 8 | 7 | SSE | 14 | 13.0 | |
| 8 | 7 | SSW | 16 | 13.0 | |
| 6 | 5 | SW | 17 | 12.8 | |
| 7 | 6 | NW | 17 | 12.9 | |
| 9 | 6 | NNW | 20 | 12.9 | |
| 6 | 6 | NNW | 12 | 13.1 |