M4 wave buoy daily averages for Nov 2025 last observation shown Sun, Nov 30, 2025, 23:00 Data available: Sat, Apr 29, 2023 to Tue, Jan 6, 2026 Monthly averages for 2025

Average Wave Height

20 ft

9.5 — 41 ft

Average Wave period

9 secs

6 — 12 secs

Average Water temperature

12 °C

11.5 — 11.8 °C

Average Wind

WNW, 29 mph

9 — 47 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 2025 last observation shown Nov 2025
Day	Wave height (ft)	Wave Period (s)	Wind Direction	Wind Speed (mph)	Water Temp (°C)
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Nov 26	-	-	-	-	-
Nov 27	27	9	SW	44	11.8
Nov 28	27	10	WSW	33	11.8
Nov 29	15	9	NNW	18	11.7
Nov 30	11	7	N	21	11.6

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