M2 wave buoy daily averages for Sep 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
4 ft
0.7 — 7.5 ft
Average Wave period
4 secs
3 — 6 secs
Average Water temperature
15 °C
0 — 15.8 °C
Average Wind
SSW, 17 mph
2 — 33 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) |
|---|---|---|---|---|---|
| 5 | 5 | SW | 18 | 15.1 | |
| 3 | 4 | S | 10 | 15.3 | |
| 3 | 4 | SW | 12 | 15.4 | |
| 3 | 5 | W | 13 | 15.4 | |
| 3 | 4 | SW | 17 | 15.4 | |
| 4 | 4 | SE | 19 | 15.3 | |
| 5 | 5 | S | 17 | 15.1 | |
| 4 | 5 | SW | 18 | 12.7 | |
| 6 | 5 | SSE | 24 | 13.8 | |
| 5 | 5 | S | 23 | 15.2 | |
| 5 | 5 | WSW | 23 | 15.2 | |
| 5 | 5 | SW | 21 | 13.9 | |
| 4 | 4 | WSW | 20 | 15.1 | |
| 5 | 5 | SSW | 21 | 13.6 | |
| 7 | 5 | W | 31 | 15.2 | |
| 5 | 4 | WSW | 21 | - | |
| 5 | 5 | SSW | 21 | - | |
| 5 | 5 | SSW | 19 | - | |
| 5 | 5 | SSW | 14 | - | |
| 3 | 5 | N | 17 | - | |
| 5 | 5 | N | 21 | - | |
| 3 | 4 | N | 14 | - | |
| 2 | 3 | NE | 10 | - | |
| 2 | 3 | SE | 10 | - | |
| 2 | 3 | SE | 9 | - | |
| 3 | 4 | SSE | 18 | - | |
| 5 | 5 | SW | 20 | - | |
| 2 | 4 | WSW | 6 | - | |
| 2 | 4 | S | 11 | - | |
| 4 | 4 | S | 22 | - |