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M4 wave buoy daily averages for Jan 2024 last observation shown Data available:  to  Monthly averages for

Average Wave Height

13 ft
4.6 — 26.9 ft

Average Wave period

8 secs
5 — 11 secs

Average Water temperature

11 °C
9.6 — 10.8 °C

Average Wind

WSW, 20 mph
2 — 40 mph

Chart showing grouped wave observations for M4. Use the table on this page for a text version of the same measurements.

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 Jan 2024 last observation shown
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
12 7 SSW 22 10.8
11 7 W 21 10.7
14 9 W 18 10.7
12 7 WNW 16 10.7
11 7 NW 20 10.7
8 6 NW 12 10.7
7 7 ESE 10 10.7
9 7 SE 21 10.7
10 7 E 21 10.7
7 6 E 16 10.6
7 8 E 11 10.6
6 10 NNW 7 10.5
6 6 NNW 13 10.6
8 6 N 20 10.5
13 8 NNW 16 10.4
11 7 NW 20 10.2
11 8 N 13 10.1
11 8 NW 17 9.9
12 7 SW 27 10.4
16 8 SW 24 10.5
18 8 SSW 28 10.5
26 10 W 32 10.6
21 9 SSW 29 10.6
22 10 SW 21 10.7
14 8 SSW 24 10.7
20 8 WSW 30 10.6
22 9 SSW 29 10.6
19 8 SW 27 10.7
17 9 W 10 10.7
15 8 SW 23 10.7
22 9 WSW 29 10.6

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