M5 wave buoy daily averages for Sep 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
6 ft
1.3 — 11.5 ft
Average Wave period
6 secs
3 — 9 secs
Average Water temperature
16 °C
14.9 — 17.2 °C
Average Wind
SW, 18 mph
0 — 36 mph
Chart showing grouped wave observations for M5. Use the table on this page for a text version of the same measurements.
About M5 wave buoy
M5 is an offshore data buoy in the Atlantic approaches (51.4100°N, 6.4200°W). It is positioned to monitor swell and storm waves moving toward Ireland and the UK, supporting marine warnings. It typically reports waves (height/period/direction) and basic meteorology.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 8 | 6 | W | 24 | 16.7 | |
| 5 | 6 | SSW | 9 | 16.8 | |
| 6 | 6 | W | 18 | 16.8 | |
| 7 | 7 | WNW | 17 | 16.8 | |
| 5 | 6 | SW | 14 | 16.8 | |
| 6 | 5 | SSE | 22 | 16.9 | |
| 9 | 6 | SW | 22 | 16.9 | |
| 6 | 6 | WSW | 18 | 16.8 | |
| 8 | 6 | SSW | 21 | 16.8 | |
| 7 | 6 | WSW | 22 | 16.7 | |
| 10 | 6 | W | 29 | 16.5 | |
| 8 | 6 | WSW | 25 | 16.2 | |
| 7 | 6 | W | 22 | 16.0 | |
| 7 | 5 | SSW | 24 | 15.9 | |
| 11 | 7 | W | 26 | 15.3 | |
| 7 | 6 | WSW | 20 | 15.3 | |
| 10 | 6 | SW | 25 | 15.2 | |
| 8 | 6 | SSW | 18 | 15.2 | |
| 7 | 6 | SSW | 19 | 15.3 | |
| 5 | 5 | N | 17 | 15.4 | |
| 5 | 5 | N | 23 | 15.1 | |
| 3 | 4 | NNE | 15 | 14.9 | |
| 2 | 4 | ENE | 9 | 15.2 | |
| 3 | 6 | SE | 9 | 15.4 | |
| 3 | 6 | SE | 10 | 15.5 | |
| 4 | 5 | SSE | 14 | 15.6 | |
| 7 | 6 | WSW | 16 | 15.5 | |
| 4 | 6 | W | 11 | 15.5 | |
| 3 | 5 | SW | 11 | 15.5 | |
| 4 | 5 | SSW | 18 | 15.5 |