St David's Head
Wales (Pembrokeshire) · United Kingdom
St David's Head at the very tip of the Pembrokeshire peninsula juts into the full force of the Celtic Sea, creating tidal races and eddies that deliver exceptional visibility and concentrations of filter-feeding life across every rock surface. The headland's underwater topography is a complex arrangement of granite ridges, boulders, and gullies colonised by jewel anemones in vivid red, orange, and purple, making it one of the most photogenic cold-water sites in Wales. Encounter-driven diving here is reliable — grey seals, conger eels, and large schools of pollock and coalfish are present on virtually every dive throughout the year.
Conditions
Depth
5 to 28 m
Open water and up
Current
Usually gentle
Can pick up on the edge
Visibility
10 to 18 m
Clearest in the calm season
Water
7 to 18°C
5mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 8 | 7 | 7 | 8 | 10 | 12 | 14 | 15 | 14 | 12 | 9 | 8 |
| Vis (m) | 4 | 4 | 5 | 6 | 7 | 8 | 10 | 10 | 8 | 6 | 4 | 4 |
| Current | Strong | Strong | Strong | Moderate | Moderate | Moderate | Gentle | Gentle | Moderate | Moderate | Strong | Strong |
Your chances of seeing each animal
European Stonechat
Last confirmed Jul 5, 2026 · 68 records
Almost always
Nearly every dive
Razorbill
Last confirmed Jul 7, 2026 · 104 records
Almost always
Nearly every dive
Common Murre
Last confirmed Jul 7, 2026 · 121 records
Almost always
Nearly every dive
Spiny Starfish
Last confirmed Jun 21, 2026 · 17 records
Very likely
Most dives
Atlantic Puffin
Last confirmed Jul 7, 2026 · 264 records
Very likely
Most dives
Jewel Anemone
Last confirmed Jun 15, 2026 · 11 records
Very likely
Most dives
Ballan Wrasse
Last confirmed Jun 13, 2026 · 9 records
Very likely
Most dives
Coalfish
Expected
Known here, not yet in recent logs
Gear