M5 wave buoy monthly averages for 2025 last observation shown Data available: to
Average Wave Height
6 ft
1 — 31.2 ft
Average Wave period
6 secs
3 — 11 secs
Average Water temperature
13 °C
0 — 20 °C
Average Wind
WSW, 17 mph
0 — 49 mph
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.
| Month | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
|---|---|---|---|---|---|
| 10 | 6 | S | 22 | 11.9 | |
| 9 | 6 | W | 23 | 12.4 | |
| 6 | 5 | W | 19 | 14.9 | |
| 6 | 6 | SW | 19 | 15.9 | |
| 4 | 5 | WSW | 16 | 17.5 | |
| 4 | 5 | W | 14 | 17.1 | |
| 4 | 5 | SW | 16 | 14.9 | |
| 4 | 5 | NNE | 13 | 13.3 | |
| 4 | 5 | E | 13 | 10.9 | |
| 4 | 5 | E | 13 | 9.6 | |
| 8 | 7 | SSW | 16 | 9.8 | |
| 9 | 7 | WSW | 16 | 10.7 |