Severn Bore Wave Rating – Understanding the Star System
The Severn Bore is a unique tidal phenomenon, but not every bore is the same. The star rating system helps spectators and surfers determine how impressive a bore is likely to be.
★ 1-Star Bore – Minor & Weak
- Small, barely noticeable tidal surge.
- Minimal impact on river conditions.
- Not ideal for spectators or surfers.
★★ 2-Star Bore – Modest Movement
- A more defined wave but still relatively weak.
- Sometimes surfable, but not particularly exciting.
★★★ 3-Star Bore – Moderate & Enjoyable
- A visible and well-formed wave, 0.5 to 1 metre high.
- A good spectacle for first-time viewers.
- Offers decent surfing conditions for experienced riders.
★★★★ 4-Star Bore – Large & Thrilling
- A powerful wave, 1 to 1.5 metres high.
- Attracts large crowds due to its spectacle.
- A fantastic challenge for bore surfers and photographers.
★★★★★ 5-Star Bore – Rare & Spectacular
- A huge wave, often exceeding 2 metres.
- Produces a deep roaring sound as it moves upriver.
- The most exhilarating experience for both spectators and surfers.
What Affects the Severn Bore’s Size?
Several factors influence how big and powerful the Severn Bore will be:
✔ Tidal Range – The higher the tide, the bigger the bore.
✔ Weather Conditions – Following winds increase height, while opposing winds and high river levels can weaken it.
✔ River Shape – The narrowing of the River Severn amplifies the wave.
