M4 wave buoy daily averages for Jun 2024 last observation shown Data available: to Monthly averages for
Average Wave Height
8 ft
3.9 — 14.1 ft
Average Wave period
6 secs
4 — 8 secs
Average Water temperature
13 °C
12.2 — 14.2 °C
Average Wind
W, 16 mph
2 — 33 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) |
|---|---|---|---|---|---|
| 6 | 7 | NW | 8 | 13.4 | |
| 5 | 5 | W | 16 | 13.4 | |
| 7 | 5 | W | 18 | 13.3 | |
| 12 | 7 | WNW | 23 | 12.9 | |
| 13 | 8 | WNW | 20 | 12.8 | |
| 10 | 7 | WNW | 17 | 12.7 | |
| 9 | 6 | W | 19 | 12.6 | |
| 10 | 6 | WNW | 20 | 12.7 | |
| 9 | 6 | NW | 17 | 12.7 | |
| 6 | 5 | N | 16 | 12.7 | |
| 6 | 6 | NNW | 12 | 12.9 | |
| 5 | 6 | SSW | 12 | 13.0 | |
| 7 | 5 | S | 20 | 12.9 | |
| 10 | 7 | W | 20 | 12.7 | |
| 10 | 7 | N | 13 | 12.9 | |
| 7 | 6 | NNW | 15 | 13.1 | |
| 7 | 5 | N | 18 | 13.1 | |
| 6 | 5 | N | 16 | 13.1 | |
| 5 | 5 | WSW | 14 | 13.2 | |
| 7 | 6 | SSW | 16 | 13.2 | |
| 9 | 6 | SW | 19 | 13.2 | |
| 8 | 6 | SW | 17 | 13.2 | |
| 8 | 7 | SSW | 15 | 13.2 | |
| 8 | 6 | SSW | 19 | 13.1 | |
| 6 | 6 | WNW | 8 | 13.3 | |
| 7 | 6 | S | 20 | 13.2 | |
| - | - | - | - | - | |
| 11 | 7 | W | 17 | 12.5 | |
| 9 | 7 | NW | 14 | 12.6 | |
| 8 | 6 | W | 14 | 12.6 |