Greenwich wave buoy daily averages for Dec 2021 last observation shown Fri, Dec 31, 2021, 22:00 Data available: Tue, Mar 2, 2010 to Mon, Mar 16, 2026 Monthly averages for 2021

Average Wave Height

4 ft

0.7 — 15.4 ft

Average Wave period

7 secs

5 — 16 secs

Average Water temperature

12 °C

10.6 — 12.7 °C

Average Wind

SW, 23 mph

2 — 46 mph

About Greenwich wave buoy

Greenwich (WMO 62305) is an offshore station in the southern North Sea/Thames approaches (50.4170°N, 0.0000°E). It is sited to monitor waves and weather affecting busy shipping lanes and coastal flood/sea-state forecasting for south‑east England. It reports wave height/period/direction and meteorological variables such as wind and pressure.

Greenwich wave buoy daily averages Dec 2021 last observation shown Dec 2021
Day	Wave height (ft)	Wave Period (s)	Wind Direction	Wind Speed (mph)	Water Temp (°C)
Dec 31	4	7	SSW	25	11.5
Dec 30	5	7	SSW	27	11.5
Dec 29	6	8	SW	26	11.4
Dec 28	9	8	WSW	34	11.3
Dec 27	3	7	S	23	11.2
Dec 26	2	7	SSW	12	11.2
Dec 25	3	8	SSE	13	11.3
Dec 24	3	8	SSW	16	11.2
Dec 23	3	6	SSW	23	11.0
Dec 22	2	5	SSE	19	10.7
Dec 21	1	6	E	15	11.0
Dec 20	2	6	ENE	21	11.1
Dec 19	1	6	ENE	19	11.3
Dec 18	3	5	ENE	24	11.4
Dec 17	2	8	ENE	22	11.7
Dec 16	1	9	NW	8	11.8
Dec 15	2	7	SW	17	11.8
Dec 14	2	7	SW	16	11.8
Dec 13	3	7	SSW	19	11.9
Dec 12	3	6	SW	22	11.9
Dec 11	3	7	W	19	11.5
Dec 10	7	7	NW	35	11.5
Dec 9	5	7	WSW	28	11.6
Dec 8	8	7	WSW	32	11.6
Dec 7	5	6	SW	30	11.8
Dec 6	4	6	W	25	11.8
Dec 5	6	7	NW	32	11.9
Dec 4	5	7	W	26	12.2
Dec 3	3	6	WSW	19	12.0
Dec 2	3	6	NNW	24	11.9
Dec 1	7	7	WNW	32	12.6

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