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M4 wave buoy daily averages for May 2023 last observation shown Data available:  to  Monthly averages for

Average Wave Height

8 ft
3.6 — 19 ft

Average Wave period

7 secs
4 — 10 secs

Average Water temperature

12 °C
10.9 — 14 °C

Average Wind

WSW, 15 mph
2 — 29 mph
About M4 wave buoy

M4 is an offshore data buoy in the Atlantic approaches (55.0000°N, 10.0000°W). It supports marine forecasting by providing real‑time sea‑state and weather observations in open water. It typically reports directional waves and meteorology.

M4 wave buoy daily averages May 2023 last observation shown May 2023
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
5 5 NE 20 13.4
5 5 ENE 16 13.4
6 6 ENE 17 13.1
8 7 NE 12 13.2
6 6 WNW 13 13.3
8 8 W 6 13.3
11 9 WNW 11 12.8
10 8 W 14 12.5
10 8 W 17 12.4
10 8 WNW 12 12.4
10 8 N 10 12.3
7 7 WSW 14 12.2
10 8 WSW 14 12.2
8 6 SW 17 12.1
6 6 SSW 18 11.9
7 6 WNW 13 11.8
9 7 WNW 15 11.7
9 7 WNW 19 11.7
8 8 S 16 12.1
5 6 WNW 5 12.1
11 7 NNW 20 11.7
16 8 W 23 11.6
10 8 SSW 18 11.6
6 5 SSW 16 11.4
6 5 SSE 18 11.4
5 6 SSE 14 11.4
6 6 SE 15 11.2
7 5 E 22 11.2
7 6 ESE 17 11.2
6 6 ESE 13 11.2
7 7 NNE 11 11.1

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