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M3 wave buoy monthly averages for 2023 last observation shown Data available:  to 

Average Wave Height

8 ft
2 — 16.1 ft

Average Wave period

6 secs
4 — 12 secs

Average Water temperature

14 °C
11.3 — 19 °C

Average Wind

WSW, 16 mph
2 — 45 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 monthly averages 2023 last observation shown
Month Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
- - - - -
- - - - -
- - - - -
5 6 SW 12 12.3
7 7 N 14 13.2
5 5 S 14 16.7
7 6 W 18 16.4
7 6 W 16 16.1
9 7 SSW 16 16.4
9 7 S 17 14.5
10 7 W 19 12.3
11 7 WSW 21 11.5

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