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

Average Wave Height

11 ft
4.3 — 20 ft

Average Wave period

7 secs
5 — 10 secs

Average Water temperature

11 °C
11.2 — 11.9 °C

Average Wind

S, 21 mph
2 — 47 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 Jan 2025 last observation shown
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
14 7 NW 23 11.6
9 6 NNE 20 11.5
5 6 E 14 11.5
10 6 ESE 27 11.7
12 6 NNE 31 11.4
13 7 NW 30 11.4
10 7 NNW 17 11.3
10 7 ENE 24 11.2
10 8 NE 15 11.3
12 7 SW 22 11.3
11 8 SW 11 11.3
8 6 S 21 11.3
12 7 S 21 11.4
11 8 S 15 11.4
11 8 S 20 11.5
12 8 S 21 11.6
11 7 S 23 11.7
12 7 S 25 11.7
14 9 S 15 11.7
10 8 E 6 11.6
7 7 N 9 11.6
7 6 WNW 15 11.6
14 7 SW 32 11.6
- - - - -
16 9 SW 20 11.4
16 8 SSE 34 11.6
- - - - -
18 8 WNW 26 11.4
11 7 NNE 23 11.3
11 8 WSW 19 11.4
10 8 SE 16 11.4

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