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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 — 15.7 ft

Average Wave period

7 secs
4 — 11 secs

Average Water temperature

12 °C
11.1 — 11.8 °C

Average Wind

ESE, 18 mph
2 — 36 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.

M3 wave buoy daily averages Mar 2025 last observation shown
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
11 8 SSW 17 11.5
13 10 SSW 14 11.5
12 10 S 11 11.5
12 9 SSW 18 11.5
11 7 S 23 11.5
14 8 SSW 19 11.5
10 7 SE 17 11.5
10 7 E 23 11.6
10 7 ENE 20 11.6
9 7 ENE 14 11.5
7 6 E 13 11.4
5 5 NNE 16 11.4
5 5 N 17 11.5
6 6 NNE 17 11.5
5 6 NE 11 11.6
4 5 E 14 11.5
6 5 ESE 23 11.5
10 6 ESE 28 11.5
8 6 E 22 11.5
7 6 ESE 21 11.5
10 7 ESE 16 11.7
15 8 NNW 34 11.5
11 7 N 27 11.3
6 6 WNW 12 11.5
4 6 NW 10 11.6
6 6 S 14 11.7
8 6 SW 21 11.6
14 8 WNW 22 11.5
12 8 WSW 21 11.5
10 8 WSW 11 11.4
8 8 SE 16 11.4

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