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

Average Wave Height

12 ft
4.6 — 27.6 ft

Average Wave period

7 secs
5 — 12 secs

Average Water temperature

12 °C
11.5 — 13.5 °C

Average Wind

W, 19 mph
2 — 40 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 Nov 2023 last observation shown Nov 2023
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
7 6 NE 17 11.5
6 6 ENE 17 11.6
6 6 NNW 9 11.6
8 6 NNE 17 11.7
9 7 SSW 14 11.7
11 8 SE 17 11.7
14 9 NNE 13 11.7
18 8 W 25 11.8
15 8 WSW 26 11.8
7 6 W 17 11.8
15 7 NNW 25 11.9
16 9 WSW 18 11.9
11 6 SSW 24 11.9
11 7 SSE 18 11.9
8 6 SSW 19 12.0
12 7 W 20 11.9
14 8 WSW 23 12.0
12 8 SW 17 12.0
8 5 SE 24 12.1
8 6 E 16 12.1
16 8 NNW 22 12.1
22 10 WSW 19 12.2
15 7 WSW 30 12.4
11 7 W 18 12.7
14 7 WNW 23 12.7
12 8 WNW 18 13.1
9 7 NNE 14 13.1
12 8 NW 13 12.9
14 8 S 18 12.9
12 7 S 24 13.3

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