M3 wave buoy daily averages for May 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
6 ft
1.6 — 13.1 ft
Average Wave period
6 secs
4 — 11 secs
Average Water temperature
15 °C
12.9 — 16.3 °C
Average Wind
N, 13 mph
0 — 29 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) |
|---|---|---|---|---|---|
| 8 | 7 | N | 16 | 13.1 | |
| 8 | 7 | NE | 13 | 13.3 | |
| 6 | 5 | N | 17 | 13.4 | |
| 5 | 5 | NNE | 5 | 13.8 | |
| 4 | 5 | N | - | 13.9 | |
| 3 | 6 | N | 2 | 14.2 | |
| 2 | 6 | NE | 7 | 14.6 | |
| 3 | 5 | NE | 10 | 14.7 | |
| 4 | 7 | WNW | 4 | 15.0 | |
| 7 | 9 | SSE | 6 | 15.2 | |
| 10 | 9 | NNW | 13 | 15.0 | |
| 9 | 6 | N | 22 | 14.0 | |
| 6 | 6 | ENE | 14 | 13.9 | |
| 4 | 5 | E | 11 | 14.4 | |
| 3 | 4 | E | 9 | 14.8 | |
| 4 | 6 | E | 9 | 15.2 | |
| 5 | 7 | E | 11 | 15.2 | |
| 4 | 5 | E | 13 | 15.2 | |
| 3 | 6 | ESE | 8 | 15.7 | |
| 4 | 5 | SSE | 15 | 15.4 | |
| 4 | 5 | N | 13 | 15.4 | |
| 3 | 5 | WNW | 11 | 15.7 | |
| 3 | 5 | W | 13 | 15.8 | |
| 8 | 5 | WSW | 22 | 15.5 | |
| 12 | 7 | WNW | 24 | 14.9 | |
| 13 | 8 | WSW | 21 | 14.7 | |
| 12 | 7 | W | 20 | 14.5 | |
| 8 | 6 | WSW | 17 | 14.5 | |
| 10 | 6 | SW | 21 | 14.5 | |
| 7 | 6 | SW | 14 | 14.7 | |
| 8 | 6 | WSW | 20 | 14.7 |