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

Average Wave Height

7 ft
2.6 — 14.8 ft

Average Wave period

6 secs
4 — 8 secs

Average Water temperature

15 °C
14.3 — 15.9 °C

Average Wind

W, 17 mph
2 — 36 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 Jul 2023 last observation shown Jul 2023
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
9 6 W 23 15.1
7 5 SW 19 15.0
11 6 WSW 27 15.0
11 7 S 24 15.4
7 6 WSW 17 15.5
5 4 SSE 18 15.5
3 4 SW 14 15.5
6 5 N 13 15.4
7 5 NE 22 15.3
5 6 E 8 15.4
6 5 WSW 17 15.4
6 6 NW 14 15.5
5 6 NW 12 15.5
4 6 N 9 15.4
6 6 W 9 15.1
9 6 WNW 17 14.9
11 6 NNW 28 15.1
5 5 E 17 15.3
5 6 SW 12 15.3
6 5 WNW 19 15.1
4 4 WNW 17 15.4
3 5 E 10 15.2
5 6 SE 7 15.0
8 6 SE 22 14.7
7 6 SSE 17 14.5
8 6 S 25 14.7
6 5 WSW 17 14.9
8 6 NW 16 14.9
9 6 W 21 14.8
10 6 W 23 14.9
13 7 W 25 15.3

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