M3 wave buoy daily averages for Jun 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
7 ft
3 — 12.5 ft
Average Wave period
6 secs
4 — 9 secs
Average Water temperature
15 °C
14.2 — 17.2 °C
Average Wind
WSW, 15 mph
0 — 31 mph
Chart showing grouped wave observations for M3. Use the table on this page for a text version of the same measurements.
About M3 wave buoy
M3 is an offshore data buoy in the Atlantic approaches (51.1300°N, 10.3300°W). It provides upstream observations of swell and storm conditions relevant to Ireland/UK marine forecasts. It typically measures wave height/period/direction plus basic meteorological variables.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 11 | 7 | NW | 20 | 14.8 | |
| 9 | 7 | WSW | 19 | 14.8 | |
| 12 | 7 | WNW | 19 | 14.7 | |
| 12 | 8 | W | 18 | 14.7 | |
| 10 | 7 | W | 18 | 14.6 | |
| 8 | 7 | W | 16 | 14.4 | |
| 7 | 6 | NW | 15 | 14.4 | |
| 6 | 6 | W | 15 | 14.3 | |
| 5 | 5 | WSW | 17 | 14.4 | |
| 5 | 5 | WSW | 11 | 14.8 | |
| 4 | 5 | SSE | 15 | 14.9 | |
| 10 | 8 | SSE | 13 | 15.1 | |
| 7 | 7 | S | 12 | 15.2 | |
| 5 | 6 | WNW | 11 | 15.5 | |
| 5 | 5 | W | 15 | 15.5 | |
| 5 | 5 | SW | 17 | 15.6 | |
| 6 | 6 | W | 13 | 15.8 | |
| 4 | 6 | S | 7 | 16.1 | |
| 4 | 5 | E | 16 | 16.3 | |
| 4 | 5 | SSE | 10 | 16.6 | |
| 3 | 5 | SSW | 13 | 16.9 | |
| 6 | 5 | W | 19 | 16.6 | |
| 9 | 6 | W | 18 | 16.2 | |
| 8 | 6 | W | 17 | 16.0 | |
| 6 | 6 | SW | 13 | 16.1 | |
| 8 | 6 | WSW | 20 | 16.0 | |
| 10 | 6 | SW | 20 | 15.9 | |
| 9 | 6 | SW | 14 | 16.0 | |
| 9 | 8 | S | 13 | 16.2 | |
| 7 | 7 | SSW | 15 | 16.3 |