Scuba Diving at Canyon Do Inferno

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.

Starting the day at Canyon Do Inferno, the ambient air temperature is recorded at 18.5°C. Ongoing monitoring shows wave heights measuring 1.2 m. This data represents the current surface conditions for early activities.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Max Depth--
Entry Type--
Water Typesalt
Dive Types
Reef

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

7/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
19° / 17°
Wave Height
1.2 m
Wind Speed
29 km/h NW
Rain Chance
0%

Current conditions near Canyon Do Inferno show 19° air, 17° sea temperature, 1.2 m waves, and 29 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 14, 2026, 02:26 local time
MARINE: OPEN-METEOWEATHER: YR.NO

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

57/100
Moderate

Scores combine air & water temps, waves, wind & rainfall for overall conditions.


BEST MONTHS TO DIVE

JUN
JUL
AUG
DIVE SCORE
(0–100)
25
JAN
25
FEB
25
MAR
43
APR
55
MAY
58
JUN
58
JUL
56
AUG
45
SEP
41
OCT
37
NOV
37
DEC
AIR TEMP (°C)
14
14
14
16
17
19
20
20
19
19
16
13
WAVES (M)
3.6
3.5
3.3
2.3
1.8
1.6
1.6
1.7
2.0
2.4
2.7
2.8
WIND (KM/H)
29
27
27
26
26
26
28
29
24
24
24
23
RAIN (MM)
6.3
5.9
5.3
2.2
1.0
1.4
0.3
0.1
1.0
3.8
4.4
2.6
DIVE SCORE GUIDE (0–100)
Excellent (90–100)
Very Good (80–89)
Good (70–79)
Moderate (50–69)
Poor (30–49)
Not Recommended (0–29)

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

With water temperatures around 17°C (62°F), many divers find a 5-7mm wetsuit provides comfortable protection.

Divers performing multiple dives may appreciate slightly warmer protection later in the day.

Surface conditions are expected to warm up slightly in the coming days. A warming trend is expected over the next few days.

Canyon Do Inferno conditions last reviewed: 02:26 local time (UTC-1), Jun 14, 2026

Emergency & Medical Support

Essential information to help you plan your dive trip to CANYON do INFERNO.

Hyperbaric Chamber

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
24/7 Available

Divers Alert Network

Diving emergency assistance available through DAN Europe.

+39 0642115685
  • 24/7 emergency hotline
  • Diving medical assistance
  • Evacuation coordination
View official DAN emergency contacts

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 Capable
Lisboa, Portugal•Approx. 24 km straight-line
Facility Details
Operating Hours
08:30 - 17:00
ICU Capable
Yes
Fully equipped ICU on-site
Chamber Type
2x Multiplace 12ps each
2x Multiplace 12ps each chamber facility
Facility / Hospital
Hospital das Forças Armadas - Armed Forces Hospital
24/7 Listed
Yes
Listed as 24/7 available facility

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.

SourceEUBS / OXYNET
Chamber data is sourced from self-reported EUBS/OXYNET listings and has not been independently verified by Dive Navigator. Always contact local emergency services, DAN, your dive operator, or the facility directly before travelling.
View all in Portugal

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.

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Dive Centers Near Canyon Do Inferno

Cascais Dive
4.3 km away

Cascais Dive

4.8| 36 reviews
Today: 09:00 - 16:00
Sun09:00 - 16:00
MonClosed
Tue09:00 - 16:00
Wed09:00 - 16:00
Thu09:00 - 16:00
Fri09:00 - 16:00
Sat09:00 - 16:00
Didactic Turtle

Didactic Turtle

5| 5 reviews
24.6 km
Cabana Divers

Cabana Divers

4.7| 11 reviews
24.3 km
Anthia Diving Center

Anthia Diving Center

5| 437 reviews
39.1 km
Spot Freedive School

Spot Freedive School

39.2 km 4.9· 53 reviews
Cipreia Dive Club Sesimbra

Cipreia Dive Club Sesimbra

39.3 km 4.8· 336 reviews
Diving Center Megadive

Diving Center Megadive

39 km 4.8· 187 reviews

Nearest Airports

Nearest airports to help plan travel to this dive area.

Cascais AirportCAT
8 km
Lisbon Humberto Delgado AirportLIS
28 km
Portimão AirportPRM
186 km
💵Currency:EUR

Search Flights

Check available flights and routes on Expedia, using the nearby airports listed in this section.

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Frequently 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.

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