M2 wave buoy daily averages for Dec 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
6 ft
1.3 — 11.5 ft
Average Wave period
5 secs
3 — 7 secs
Average Water temperature
12 °C
11.4 — 13 °C
Average Wind
S, 23 mph
2 — 43 mph
Chart showing grouped wave observations for M2. Use the table on this page for a text version of the same measurements.
About M2 wave buoy
M2 is an offshore data buoy in the NE Atlantic west/south‑west of Ireland (53.2900°N, 5.2600°W). It is placed to observe approaching Atlantic sea states and weather systems, improving warnings and forecasts for Ireland and the UK. It typically reports directional wave parameters and standard meteorology.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 7 | 6 | SSW | 20 | 12.9 | |
| 5 | 5 | SSW | 19 | 12.9 | |
| 4 | 4 | SSW | 21 | 12.9 | |
| 5 | 5 | WSW | 21 | 12.9 | |
| 6 | 5 | SSW | 26 | 12.9 | |
| 6 | 6 | WSW | 23 | 12.9 | |
| 4 | 4 | SSW | 21 | 12.8 | |
| 6 | 5 | SSW | 24 | 12.8 | |
| 8 | 6 | SSE | 29 | 12.7 | |
| 8 | 6 | SW | 28 | 12.6 | |
| 10 | 6 | SSW | 30 | 12.5 | |
| 4 | 5 | SW | 15 | 12.5 | |
| 7 | 5 | SSW | 30 | 12.5 | |
| 11 | 6 | SSW | 36 | 12.5 | |
| 5 | 5 | WNW | 10 | 12.4 | |
| 2 | 4 | W | 14 | 12.4 | |
| 9 | 6 | S | 32 | 12.4 | |
| 6 | 5 | SSW | 24 | 12.3 | |
| 7 | 5 | SW | 25 | 12.2 | |
| 8 | 5 | SSE | 30 | 12.2 | |
| 6 | 5 | ESE | 21 | 12.1 | |
| 4 | 4 | E | 19 | 12.1 | |
| 5 | 4 | ENE | 21 | 12.1 | |
| 7 | 5 | E | 27 | 12.0 | |
| 8 | 5 | E | 29 | 11.9 | |
| 7 | 5 | E | 27 | 11.8 | |
| 6 | 5 | ENE | 27 | 11.6 | |
| 5 | 5 | E | 21 | 11.6 | |
| 3 | 4 | ENE | 18 | 11.5 | |
| 3 | 4 | E | 15 | 11.5 | |
| 3 | 3 | WNW | 15 | 11.5 |