MIDDLESEX
Protected Area
Flat Holm
Why dive here
With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - MIDDLESEX offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.
The Middlesex, off the coast of Cornwall, is a proper chunk of history on the seabed. We love it because it’s a big wreck, 140 metres long, and you really feel the scale as you descend onto it. Sunk in 1941, this steamship lies in about 24 metres, providing plenty of structure to explore. You’ll find schools of bib and pollack darting through the superstructure, and the boilers are always a favourite spot to peer into – watch for conger eels tucked away in the shadows. Visibility can be a typical UK affair, sometimes a bit murky, but on a good day, the sheer size of the Middlesex is impressive. It’s a dive for those who appreciate the weight of history and don't mind a bit of a current. We’d suggest timing your dive for slack water to make the most of the deck exploration; otherwise, it can be a bit of a workout. It’s a site for experienced divers, given the depth and potential for currents, but totally worth it for the sense of discovery.
Typical MIDDLESEX Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Depth of 24m - Advanced Open Water certification recommended.
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to MIDDLESEX
Dive shops near MIDDLESEX
Welsh Diving
Scuba Scene Taunton
Scuba Blue Ltd
Divexplore
Extreme Marine
Reviews for MIDDLESEX
Conditions
Ocean conditions, forecast and tides for MIDDLESEX
MIDDLESEX Ocean Conditions
Monthly averages for MIDDLESEX, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)
October Averages
Sea Temperature
17°C
62°F · Range: 15.1–17.5°C
Air Temperature
13°C
56°F
Wind Speed
8.14 m/s
15.8 knots
Atmospheric Pressure
1011 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
Plan & book
Ways to dive Cornwall & Devon, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Cornwall & DevonPlaces to stay
via Booking.comHotels and dive resorts near Cornwall & Devon.
Search stays in Cornwall & DevonDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near MIDDLESEX
Prices from Booking.com. We may earn a commission at no extra cost to you.
