M4 wave buoy daily averages for Nov 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
10 ft
4.3 — 18.7 ft
Average Wave period
7 secs
5 — 10 secs
Average Water temperature
13 °C
12 — 13.4 °C
Average Wind
SSW, 18 mph
5 — 54 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) |
|---|---|---|---|---|---|
| 9 | 7 | SW | 16 | 13.1 | |
| 6 | 6 | SSW | 16 | 13.2 | |
| 6 | 6 | SSE | 12 | 13.3 | |
| 5 | 6 | SSE | 11 | 13.3 | |
| 6 | 5 | SSE | 18 | 13.2 | |
| 7 | 5 | SSE | 19 | 13.3 | |
| 10 | 6 | SSE | 25 | 13.2 | |
| 9 | 7 | SSE | 20 | 13.2 | |
| 7 | 6 | SSE | 19 | 13.2 | |
| 9 | 7 | W | 16 | 13.1 | |
| 10 | 9 | SSW | 10 | 13.3 | |
| 6 | 6 | SW | 12 | 13.2 | |
| 8 | 9 | W | 11 | 13.3 | |
| 9 | 9 | WNW | 10 | 13.3 | |
| 7 | 6 | WSW | 20 | 13.2 | |
| 14 | 8 | NW | 19 | 13.1 | |
| 14 | 9 | NNW | 13 | 13.1 | |
| 12 | 8 | E | 21 | 13.0 | |
| 10 | 7 | ENE | 21 | 12.8 | |
| 10 | 8 | NE | 16 | 12.8 | |
| 13 | 8 | N | 21 | 12.7 | |
| 13 | 8 | W | 20 | 12.5 | |
| 15 | 7 | S | 29 | 12.4 | |
| 18 | 8 | SW | 32 | 12.4 | |
| 18 | 9 | NW | 17 | 12.1 | |
| 14 | 9 | NNE | 11 | 12.1 | |
| 7 | 7 | ENE | 12 | 12.1 | |
| 10 | 6 | SSE | 29 | 12.2 | |
| 9 | 6 | S | 21 | 12.1 | |
| 12 | 7 | S | 24 | 12.1 |