Rhyl Flats wave buoy monthly averages for 2017 last observation shown oldest observation available
Average Wave Height
 2 ft 
 0.2 — 15.3 ft
   Average Wave period
 4 secs 
 2 — 20 secs
   Average Wave Direction
 NW 
  Average Water temperature
 12 °C 
 5.5 — 19.4 °C
   | Month | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) | 
|---|---|---|---|---|
| 3.3 | 5.1 | NW | 7.4 | |
| 3.5 | 5.1 | NW | 11.0 | |
| 3.1 | 4.7 | WNW | 13.9 | |
| 2.3 | 4.5 | NW | 16.0 | |
| 1.8 | 3.9 | WNW | 17.2 | |
| 1.6 | 3.8 | NW | 17.2 | |
| 2.2 | 4.2 | NW | 15.4 | |
| 1.4 | 3.6 | NNW | 12.2 | |
| 2.2 | 4.2 | NW | 10.0 | |
| 1.9 | 4.1 | NW | 8.1 | |
| 2.5 | 4.7 | NW | 6.6 | |
| 2.5 | 4.8 | NW | 6.8 | 
 Realtime data displayed on this page is from the Regional
                Coastal Monitoring Programme.