SIERRA
Protected Area
Estuário do Tejo
Why dive here
With 116+ marine species recorded in the area - including blue sharks, blue whales, dolphins, dwarf minke whales and ocean sunfish (mola mola) - SIERRA offers some of Algarve & Berlengas's richest wreck diving. Water ranges 15-19°C, warmest June, October, November.
The Sierra, a fishing vessel sunk in 1980, offers a unique dive just outside Lisbon. At only 13 metres, it’s an accessible wreck, especially for those new to overhead environments. We’ve found it lying on its side, the 62.5-metre hull surprisingly intact and providing plenty of nooks to poke around. Look for conger eels tucked into the darker spaces and schools of sea bream hovering just off the decks. It's a relaxed dive, good for photographers or anyone wanting a gentle introduction to wreck diving.
Typical SIERRA Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
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 SIERRA
Dive shops near SIERRA
Nautilus-Sub
Escola de Mergulho de Lisboa
CNOCA
Camara Lisboa Clube
Dive Club Cipreia - Outprostore LISBOA/ALFRAGIDE
Didactic Turtle - Dive School & Tech Services
Reviews for SIERRA
Conditions
Ocean conditions, forecast and tides for SIERRA
SIERRA Ocean Conditions
Monthly averages for SIERRA, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (37.92, -8.81) (40km away)
October Averages
Sea Temperature
19°C
65°F · Range: 16.7–20.2°C
Air Temperature
18°C
65°F
Wind Speed
8.24 m/s
16.0 knots
Atmospheric Pressure
1017.4 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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