Greenwich wave buoy daily averages for Sep 2025 last observation shown oldest observation available Monthly averages for

Average Wave Height

3 ft
0.7 — 13.8 ft

Average Wave period

7 secs
5 — 12 secs

Average Water temperature

18 °C
16.7 — 18.5 °C

Average Wind

SW, 21 mph
1 — 44 mph
Greenwich wave buoy daily averages Sep 2025 last observation shown Sep 2025
Day Wave height (ft) Wave Period (s) Wind Direction Wind Speed (mph) Water Temp (°C)
1.0 9.5 W 4 17.2
1.2 9.2 NNE 8 17.0
1.6 7.2 SSW 9 17.0
1.0 8.2 SSE 12 16.9
1.6 6.5 E 14 16.8
2.5 5.6 NNE 23 16.9
2.8 5.5 NNE 25 17.0
2.2 5.1 NNE 25 17.0
3.0 5.9 NNE 27 17.1
2.8 6.6 NNE 20 17.4
3.0 7.2 SSW 20 17.6
1.9 8 S 11 17.8
3.7 6.9 SW 19 17.7
4.2 6.5 SW 25 17.5
6.2 7.3 W 28 17.4
11.1 8 WSW 41 17.5
3.2 6.5 SW 21 17.6
5.5 6.5 WSW 27 17.5
5.9 6.6 WSW 29 17.6
6.2 6.6 WSW 30 17.7
3.4 6 SSW 25 17.8
1.3 7.1 S 11 18.0
2.1 6.7 WSW 15 18.0
1.8 5.9 SSE 18 18.1
1.4 6.6 ESE 16 18.1
2.8 7.4 WSW 13 18.0
6.0 7 SW 28 17.9
7.0 7 SSW 33 18.0
3.9 6.3 SSW 24 18.0
4.1 7 SW 24 18.1
Realtime data displayed on this page is from the Met Office Marine observations.

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