M3 wave buoy daily averages for Apr 2023 last observation shown Data available: to Monthly averages for
Average Wave Height
5 ft
4.3 — 6.6 ft
Average Wave period
6 secs
6 — 8 secs
Average Water temperature
12 °C
11.9 — 12.7 °C
Average Wind
SW, 12 mph
9 — 14 mph
Chart showing grouped wave observations for M3. Use the table on this page for a text version of the same measurements.
About M3 wave buoy
M3 is an offshore data buoy in the Atlantic approaches (51.1300°N, 10.3300°W). It provides upstream observations of swell and storm conditions relevant to Ireland/UK marine forecasts. It typically measures wave height/period/direction plus basic meteorological variables.
| Day | Wave height (ft) | Wave Period (s) | Wind Direction | Wind Speed (mph) | Water Temp (°C) |
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| 5 | 6 | S | 11 | 12.2 | |
| 6 | 7 | W | 12 | 12.4 |