M5 wave buoy daily averages for Dec 2025 last observation shown Data available: to Monthly averages for
Average Wave Height
9 ft
2 — 16.4 ft
Average Wave period
6 secs
4 — 10 secs
Average Water temperature
12 °C
11.4 — 12.4 °C
Average Wind
S, 21 mph
0 — 45 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) |
|---|---|---|---|---|---|
| 12 | 7 | SW | 28 | 12.4 | |
| 10 | 7 | WSW | 19 | 12.3 | |
| 8 | 6 | SW | 20 | 12.3 | |
| 8 | 6 | WNW | 20 | 12.3 | |
| 12 | 7 | SSW | 30 | 12.2 | |
| 14 | 8 | WSW | 25 | 12.2 | |
| 10 | 7 | SSW | 18 | 12.2 | |
| 12 | 7 | SSW | 22 | 12.1 | |
| 13 | 7 | S | 32 | 12.1 | |
| 13 | 7 | SW | 25 | 12.1 | |
| 14 | 8 | SSW | 25 | 12.0 | |
| 12 | 9 | WSW | 16 | 11.9 | |
| 10 | 6 | SSW | 25 | 11.9 | |
| 13 | 7 | SSW | 32 | 12.1 | |
| 9 | 8 | NNW | 10 | 12.0 | |
| 6 | 8 | WNW | 13 | 12.0 | |
| 12 | 7 | SSW | 28 | 12.0 | |
| 12 | 8 | SW | 24 | 12.0 | |
| 12 | 7 | WSW | 25 | 11.9 | |
| 12 | 7 | SSE | 28 | 11.9 | |
| 10 | 7 | ESE | 17 | 11.9 | |
| 7 | 5 | E | 19 | 11.9 | |
| 6 | 5 | ENE | 18 | 11.9 | |
| 7 | 5 | ENE | 21 | 11.8 | |
| 9 | 6 | ENE | 26 | 11.7 | |
| 6 | 5 | E | 19 | 11.6 | |
| 7 | 5 | ENE | 22 | 11.6 | |
| 5 | 5 | E | 15 | 11.5 | |
| 3 | 4 | E | 13 | 11.5 | |
| 5 | 4 | E | 17 | 11.4 | |
| 3 | 4 | ENE | 8 | 11.4 |