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M4 wave buoy daily averages for Aug 2024 last observation shown oldest observation available Monthly averages for

Average Wave Height

10 ft
3.6 — 24 ft

Average Wave period

6 secs
4 — 9 secs

Average Water temperature

14 °C
13.5 — 14.9 °C

Average Wind

SW, 19 mph
2 — 36 mph
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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 Aug 2024 last observation shown Aug 2024
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
4 5 SE 14 14.1
6 6 S 8 14.0
9 6 W 16 13.9
7 6 SW 18 13.8
7 6 SSW 19 13.8
9 7 SSW 16 13.7
13 7 WSW 21 13.6
11 7 W 20 13.6
12 7 WSW 19 13.7
16 8 WSW 21 13.7
13 7 SSW 27 13.8
13 7 W 25 13.9
7 6 SSW 17 14.0
10 7 WSW 19 14.0
10 7 WSW 18 14.2
12 7 SW 24 14.2
10 7 W 18 14.2
10 7 SSW 19 14.1
12 7 WSW 22 14.0
9 6 SSW 23 14.1
6 6 SE 15 14.2
10 7 WSW 17 14.1
10 6 WSW 23 14.2
7 6 SSW 15 14.2
11 6 WSW 21 14.2
11 6 SW 22 14.2
8 6 SW 17 14.3
10 6 SSW 24 14.2
11 7 SW 19 14.3
10 6 SW 22 14.4
5 5 SSW 17 14.6
Realtime data displayed on this page is from the Met Office Marine observations .

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