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

Average Wave Height

9 ft
3.3 — 65.3 ft

Average Wave period

7 secs
4 — 15 secs

Average Water temperature

12 °C
11.1 — 11.8 °C

Average Wind

ESE, 18 mph
2 — 40 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 Mar 2025 last observation shown Mar 2025
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
8 8 SE 16 11.4
10 8 WSW 11 11.4
12 8 WSW 21 11.5
14 8 WNW 22 11.5
8 6 SW 21 11.6
6 6 S 14 11.7
4 6 NW 10 11.6
6 6 WNW 12 11.5
11 7 N 27 11.3
17 8 NNW 35 11.5
10 7 ESE 16 11.7
7 6 ESE 21 11.5
8 6 E 22 11.5
10 6 ESE 28 11.5
6 5 ESE 23 11.5
4 5 E 14 11.5
5 6 NE 11 11.6
6 6 NNE 17 11.5
5 5 N 17 11.5
5 5 NNE 16 11.4
7 6 E 13 11.4
9 7 ENE 14 11.5
10 7 ENE 20 11.6
13 7 ESE 23 11.6
10 7 SE 17 11.5
15 8 SSW 20 11.5
11 7 S 23 11.5
12 9 SSW 18 11.5
12 10 S 11 11.5
15 10 SSW 13 11.5
12 9 SSW 16 11.5

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