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M5 wave buoy daily averages for May 2025 last observation shown Data available:  to  Monthly averages for

Average Wave Height

3 ft
1.3 — 7.5 ft

Average Wave period

5 secs
3 — 7 secs

Average Water temperature

13 °C
11.5 — 15.5 °C

Average Wind

NNE, 13 mph
0 — 24 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.

M5 wave buoy daily averages May 2025 last observation shown
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
2 5 NE 11 13.0
4 4 NE 19 12.4
3 4 NE 17 12.1
4 4 NNE 17 11.9
4 4 NE 17 11.7
2 4 NNE 9 12.1
2 4 NE 9 12.3
2 4 ENE 9 12.3
2 4 ENE 8 12.6
2 5 ENE 8 13.0
2 4 NNE 11 13.1
3 4 NNE 14 12.5
2 4 ENE 11 12.7
2 4 ENE 11 13.2
2 3 NE 14 13.3
2 4 ENE 10 13.4
3 4 NE 13 13.6
3 5 NE 11 13.9
3 4 E 9 14.1
2 6 ENE 6 14.4
2 5 NW 9 14.7
3 4 NNE 9 14.7
2 4 WSW 10 14.8
5 5 WSW 18 14.5
7 6 W 19 14.3
7 6 WSW 18 13.9
7 6 SW 16 13.6
6 6 WSW 14 13.5
7 5 SW 18 13.4
5 6 SW 11 13.6
5 5 SW 16 13.8

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