
Diving atCanyon Do Inferno (Portugal)
Currents and wave action frequently shape the dive experience at Canyon do Inferno, an imposing reef site situated off the coast of Lisbon, Portugal. Diving here demands awareness of the dynamic Atlantic conditions, which can influence visibility and entry points. This destination, known for its dramatic underwater canyon formations, offers a compelling exploration for those prepared for a more active environment. Conditions can fluctuate, making local knowledge essential for a rewarding and safe dive.
Current morning readings from Canyon Do Inferno indicate an air temperature of 18.5°C. Surface wave heights are averaging around 1.1 m at this time. These local measurements provide a baseline for your daily dive planning.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
Formed over millennia by natural forces, Canyon do Inferno presents a distinctive underwater topography off the Lisbon coast, near Cascais. This reef dive site is characterized by dramatic rock formations that carve out a true canyon below the surface.
Located at coordinates 38.68517, -9.43451, it remains an integral part of the regional dive landscape, drawing divers interested in geological features. While specific depth details for the canyon itself aren't consistently reported, other nearby sites in the area range into recreational limits, with some dropping to 30 m (100 ft). Its structure provides varied habitats, moving from shallower sections down to deeper, more sheltered areas within the canyon walls.
Exploring this site often reveals a mix of rocky outcrops and sandy bottom segments, typical of the diverse Iberian Atlantic. Its presence has long contributed to the array of dive opportunities in the greater Cascais region.
Canyon Do Inferno
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Canyon Do Inferno show 18° air, 17° sea temperature, 1.2 m waves, and 29 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Optimal dive conditions at Canyon do Inferno generally occur from late spring through early autumn, typically spanning April to September. During these months, average air temperatures range from around 16°C (61°F) in April up to 20°C (68°F) in August, creating more comfortable surface conditions. Wave heights tend to be significantly lower, averaging between 1.6 to 2.2 meters (5-7 ft), compared to the larger swells experienced in winter. Rain activity is minimal during this period, often below 2 mm (0.08 inches) per month, with August being the driest. While water temperature isn't consistently reported, these seasonal trends indicate a more favorable window for diving due to reduced wind speeds and calmer seas. November to March typically presents poorer diving scores due to higher waves and increased precipitation.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Divers approaching Canyon do Inferno often find themselves navigating a dynamic entry point, reflective of the Atlantic's influence. Conditions here can be variable; visibility, for instance, is not consistently reported and will depend heavily on recent weather and oceanic patterns. Once submerged, the site unfolds as a captivating reef dive, characterized by its defining canyon structure. Depths can vary significantly within this underwater landscape, with features common to a recreational depth range. Water temperatures in the wider region are typically cooler, warranting appropriate thermal protection. A colder water environment suggests a need for thicker wetsuits or drysuits. The interplay of currents can be a notable factor, shaping how divers experience the canyon's contours.
Dive Difficulty & Safety Guidelines
Navigating the varied terrain of Canyon do Inferno requires careful planning and a thorough understanding of prevailing conditions. While no specific hazards are routinely reported for this site, the dynamic nature of Atlantic waters means divers should always monitor wave height and current forecasts. Strong currents can develop unexpectedly, especially near prominent reef and canyon formations. Always maintain adequate buoyancy control to prevent accidental contact with the delicate marine environment. Novice divers should consider diving with an experienced local guide who understands the nuances of the site's unique features. It's recommended to dive within your certification limits, particularly concerning maximum depth and no-decompression limits, given the potential for deeper sections within the canyon.
Recommended Equipment
- Dive Computer
This gear list is based on verified equipment signals for Canyon Do Inferno, Portugal. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
For many recreational divers, 5-7mm wetsuit provides a practical level of insulation in these conditions. Surface intervals may feel cooler. Divers who tend to get cold easily may prefer slightly thicker exposure protection.
The waters surrounding Canyon Do Inferno are currently maintaining temperatures close to 17°C (62°F). Surface air temperatures are resting at 18°C (65°F).
Temperatures look set to gradually increase over the next several days. A warming trend is expected over the next few days.
Emergency & Medical Support
Essential information to help you plan your dive trip to CANYON do INFERNO.

Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN Europe.
+39 0642115685- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Closest Listed Hyperbaric Chambers
Showing listed hyperbaric chamber facilities within 200 km of this dive site.
Distances are approximate straight-line distances and may not reflect emergency travel time.
Centro de Medicina Subaquatica e Hiperbarica
24/7 ListedICU CapableLisboa, Portugal•Approx. 24 km straight-line
Centro de Medicina Subaquatica e Hiperbarica
24/7 ListedICU CapableFacility Details
Information is provided for reference and planning purposes only. Dive Navigator does not verify operational status, staffing, availability, or quality of care at listed facilities. In an emergency, contact local emergency services, DAN, your dive operator, or the chamber directly. Do not travel to a facility without calling ahead.
Marine Life at Canyon Do Inferno
The marine ecosystem at Canyon do Inferno thrives within its unique reef and canyon structure, attracting diverse inhabitants. Common sightings reported here include various species of sharks, though typically smaller, non-threatening types. Occasional encounters with larger marine mammals like whales and dolphins have been observed, adding an element of unpredictability to dives. Green and Loggerhead turtles are also known to frequent the area, often grazing among the rocky outcrops. The varying depths and sheltered spots within the canyon walls provide a home for a range of smaller reef fish and invertebrates, contributing to the site's rich biodiversity.
Dive Sites Near Canyon Do Inferno
View all dive sites in PortugalDiscover more underwater gems in this area.
Dive Centers Near Canyon Do Inferno
Working Hours
Today: 09:00 - 16:00
Didactic Turtle
Cabana Divers
Anthia Diving Center
Spot Freedive School
Cipreia Dive Club Sesimbra
Diving Center Megadive
Nearest Airports
Nearest airports to help plan travel to this dive area.
Search Flights
Check available flights and routes on Expedia, using the nearby airports listed in this section.
Search Flights on ExpediaFrequently Asked Questions
What is the typical depth at Canyon do Inferno?
The site's defining canyon structure implies varying depths. While specific numbers for the canyon are not consistently reported, other nearby reef dives in the region can reach around 30 m (100 ft), suggesting a recreational depth range for exploration.
Are there strong currents at this dive site?
Conditions can be dynamic due to its Atlantic location. Current presence is not consistently reported, but divers should anticipate variable currents and consult local dive operators for the most up-to-date conditions.
What kind of marine life can I expect to see?
Divers often report seeing sharks, whales, dolphins, and turtles. The reef and canyon environment also supports a variety of smaller fish and invertebrates.
Is Canyon do Inferno suitable for beginner divers?
Given the potential for dynamic conditions and varied topography, it's generally recommended for certified divers with some experience, or beginners accompanied by an experienced local guide. Understanding current conditions is key.
What are the average water temperatures?
Water temperatures are not consistently reported in the provided data. However, as an Atlantic site off Portugal, expect cooler waters, especially outside of peak summer months. Adequate thermal protection is advisable year-round.
How is visibility typically at Canyon do Inferno?
Visibility can vary significantly based on recent weather, wave action, and local oceanic patterns. There isn't consistent data, so checking with local dive centers before your dive is recommended.
Planning to dive Canyon Do Inferno?
Send one inquiry and receive offers directly from the best verified local dive operators.
Canyon Do Inferno
Conditions are Good
Best Dive Window
Optimal conditions expected
Current conditions near Canyon Do Inferno show 18° air, 17° sea temperature, 1.2 m waves, and 29 km/h wind. Forecast data is refreshed regularly to ensure accuracy.










