M4 wave buoy daily averages for Jul 2023 last observation shown Data available: to Monthly averages for
Average Wave Height
7 ft
2.6 — 14.8 ft
Average Wave period
6 secs
4 — 8 secs
Average Water temperature
15 °C
14.3 — 15.9 °C
Average Wind
W, 17 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.
Sorry, there is no wave data for Sat, Jul 1, 2023
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) |
|---|---|---|---|---|---|
| 13 | 7 | W | 25 | 15.3 | |
| 10 | 6 | W | 23 | 14.9 | |
| 9 | 6 | W | 21 | 14.8 | |
| 8 | 6 | NW | 16 | 14.9 | |
| 6 | 5 | WSW | 17 | 14.9 | |
| 8 | 6 | S | 25 | 14.7 | |
| 7 | 6 | SSE | 17 | 14.5 | |
| 8 | 6 | SE | 22 | 14.7 | |
| 5 | 6 | SE | 7 | 15.0 | |
| 3 | 5 | E | 10 | 15.2 | |
| 4 | 4 | WNW | 17 | 15.4 | |
| 6 | 5 | WNW | 19 | 15.1 | |
| 5 | 6 | SW | 12 | 15.3 | |
| 5 | 5 | E | 17 | 15.3 | |
| 11 | 6 | NNW | 28 | 15.1 | |
| - | 6 | WNW | 17 | 14.9 | |
| 6 | 6 | W | 9 | 15.1 | |
| 4 | 6 | N | 9 | 15.4 | |
| 5 | 6 | NW | 12 | 15.5 | |
| 6 | 6 | NW | 14 | 15.5 | |
| 6 | 5 | WSW | 17 | 15.4 | |
| 5 | 6 | E | 8 | 15.4 | |
| 7 | 5 | NE | 22 | 15.3 | |
| 6 | 5 | N | 13 | 15.4 | |
| 3 | 4 | SW | 14 | 15.5 | |
| 5 | 4 | SSE | 18 | 15.5 | |
| 7 | 6 | WSW | 17 | 15.5 | |
| 11 | 7 | S | 24 | 15.4 | |
| 11 | 6 | WSW | 27 | 15.0 | |
| 7 | 5 | SW | 19 | 15.0 | |
| 9 | 6 | W | 23 | 15.1 |