Start Bay wave
buoy daily averages for Mar 2025 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
2 ft
0.9 — 3.4 ft
Average Wave period
4 secs
3.5 — 4.2 secs
Average Wave Direction
SE
Average Water temperature
10 °C
9.5 — 9.8 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 1.6 | 4 | ESE | 9.5 | |
| 3.1 | 4.1 | E | 9.6 | |
| 2.0 | 3.8 | SSE | 9.7 | |
| 3.3 | 4 | E | 9.7 | |
| 3.4 | 3.9 | ESE | 9.7 | |
| 2.4 | 4 | SE | 9.7 | |
| 2.0 | 3.5 | SE | 9.8 | |
| 0.9 | 4 | S | 9.7 | |
| 1.0 | 4.2 | S | 9.7 | |
| 1.3 | 3.9 | S | 9.7 | |
| 1.8 | 4.1 | SSE | 9.8 | |
| 1.1 | 3.5 | SSE | 9.8 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.