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M3 wave buoy daily averages for May 2025 last observation shown Data available:  to  Monthly averages for

Average Wave Height

6 ft
1.6 — 65.3 ft

Average Wave period

6 secs
4 — 17 secs

Average Water temperature

15 °C
12.9 — 16.3 °C

Average Wind

N, 13 mph
0 — 29 mph
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.

M3 wave buoy daily averages May 2025 last observation shown May 2025
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
8 6 WSW 20 14.7
7 6 SW 14 14.7
10 6 SW 21 14.5
11 7 WSW 18 14.5
12 7 W 21 14.5
15 8 W 23 14.7
13 7 W 24 14.9
8 5 WSW 22 15.5
3 5 W 13 15.8
3 5 WNW 11 15.7
4 5 N 13 15.4
4 5 SSE 15 15.4
3 6 ESE 8 15.7
4 5 E 13 15.2
5 7 E 11 15.2
4 6 E 9 15.2
3 4 E 9 14.8
4 5 E 11 14.4
6 6 ENE 14 13.9
9 6 N 22 14.0
10 9 NNW 13 15.0
7 9 SSE 6 15.2
4 7 WNW 4 15.0
3 5 NE 10 14.7
2 6 NE 7 14.6
3 6 N 2 14.2
4 5 N - 13.9
5 5 NNE 5 13.8
6 5 N 17 13.4
8 7 NE 13 13.3
8 7 N 16 13.1

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