M3 wave buoy daily averages for Aug 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
8 ft
2 — 19 ft
Average Wave period
6 secs
4 — 10 secs
Average Water temperature
17 °C
16.3 — 18.4 °C
Average Wind
SW, 15 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) |
|---|---|---|---|---|---|
| 5 | 5 | NNW | 14 | 16.9 | |
| 4 | 5 | WSW | 12 | 16.7 | |
| 5 | 5 | WSW | 13 | 17.1 | |
| 11 | 6 | WNW | 22 | 17.0 | |
| 12 | 7 | WNW | 17 | 16.7 | |
| 8 | 7 | SW | 16 | 16.7 | |
| 9 | 6 | W | 16 | 16.7 | |
| 9 | 6 | WSW | 16 | 16.7 | |
| 11 | 7 | WSW | 14 | 16.6 | |
| 6 | 6 | SSW | 11 | 16.9 | |
| 6 | 7 | E | 14 | 17.1 | |
| 6 | 6 | ESE | 8 | 17.5 | |
| 3 | 6 | SSE | 9 | 17.9 | |
| 4 | 5 | SSW | 10 | 17.7 | |
| 5 | 6 | E | 12 | 18.0 | |
| 7 | 5 | E | 22 | 17.6 | |
| 6 | 5 | E | 16 | 17.5 | |
| 4 | 5 | E | 9 | 17.6 | |
| 3 | 5 | NNE | 9 | 17.8 | |
| 2 | 4 | E | 6 | 17.8 | |
| 3 | 6 | WNW | 4 | 17.8 | |
| 4 | 7 | SW | 8 | 17.9 | |
| 4 | 5 | S | 11 | 18.0 | |
| 5 | 5 | SSE | 15 | 17.8 | |
| 9 | 6 | SSW | 19 | 17.6 | |
| 17 | 9 | SW | 22 | 17.5 | |
| 16 | 8 | W | 21 | 17.4 | |
| 16 | 8 | W | 21 | 17.1 | |
| 11 | 7 | WNW | 19 | 17.0 | |
| 11 | 7 | WSW | 24 | 16.9 | |
| 17 | 8 | W | 23 | 16.4 |