Explore 91 dive and snorkel sites across St Helens. Water temperatures range from 3–33°C. Home to 12 marine species.
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Monthly water temperatures, visibility conditions, and seasonal highlights
Water temperatures in St Helens peak at 23°C in March and cool to 19°C in September. A 3-5mm wetsuit is recommended for most of the year, with a thicker suit in the cooler months.
Highest-rated sites in St Helens
Notable species found across St Helens
Everything you need to know about diving and snorkelling in St Helens
St Helens has 91 dive and snorkel sites listed on Fin, including 60 scuba diving sites and 39 snorkelling sites. Sites range in depth from 1–50m and cater to all skill levels from beginner to advanced.
Water temperatures in St Helens range from 3–33°C throughout the year. Visibility typically ranges from 1–40m.
Underwater visibility in St Helens typically ranges from 1–40m. Conditions vary by season and location — sheltered bays and deeper sites often offer the best clarity.
St Helens is home to 12 marine species recorded across its dive sites. The region's waters support a diverse range of marine life including reef fish, invertebrates, and pelagic species. Check individual dive site pages for detailed species lists and seasonal sighting information.
Yes, St Helens offers dive and snorkel sites for all experience levels. Many sites are rated for beginners with calm, shallow conditions. Use the skill level filter on Fin to find sites matched to your ability.
Browse all 91 dive and snorkel sites. Filter by skill level, depth, marine life, and more.
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Gobiidae spp.
16085 sites
