M3 wave buoy daily averages for Oct 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
9 ft
4.3 — 17.7 ft
Average Wave period
6 secs
4 — 9 secs
Average Water temperature
14 °C
13.5 — 15.1 °C
Average Wind
WSW, 18 mph
0 — 38 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) |
|---|---|---|---|---|---|
| 9 | 6 | SSW | 20 | 15.1 | |
| 10 | 6 | SSW | 20 | 15.1 | |
| 11 | 6 | SW | 24 | 15.0 | |
| 16 | 8 | NW | 25 | 14.6 | |
| 13 | 8 | W | 17 | 14.4 | |
| 9 | 6 | SW | 18 | 14.4 | |
| 10 | 7 | W | 16 | 14.4 | |
| 10 | 8 | NW | 14 | 14.3 | |
| 10 | 8 | NW | 12 | 14.3 | |
| 8 | 9 | S | 4 | 14.3 | |
| 5 | 7 | ESE | 11 | 14.3 | |
| 5 | 5 | E | 16 | 14.3 | |
| 5 | 5 | E | 17 | 14.3 | |
| 5 | 5 | E | 15 | 14.3 | |
| 5 | 5 | ESE | 17 | 14.3 | |
| 5 | 5 | ESE | 18 | 14.3 | |
| 6 | 5 | SE | 20 | 14.3 | |
| 8 | 5 | SSE | 22 | 14.3 | |
| 12 | 7 | SW | 17 | 14.3 | |
| 12 | 7 | WNW | 20 | 14.3 | |
| 7 | 6 | NW | 16 | 14.3 | |
| 6 | 6 | WSW | 13 | 14.3 | |
| 12 | 7 | NW | 26 | 14.1 | |
| 15 | 7 | WNW | 26 | 13.8 | |
| 10 | 6 | NNW | 24 | 13.7 | |
| 10 | 6 | WNW | 23 | 13.7 | |
| 13 | 7 | W | 22 | 13.6 | |
| 12 | 7 | W | 20 | 13.6 | |
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