
Diving atSecca Delle Fumose (Italy)
Explore an exceptional underwater landscape at Secca delle Fumose, where ancient history converges with active geological processes. Divers navigate among submerged Roman-era pylons while witnessing the fascinating spectacle of active volcanic fumaroles. It's a dive that offers a distinct blend of archaeological intrigue and natural wonders, providing a truly memorable experience beneath the surface of Italy’s waters. Prepare for an encounter that highlights both human heritage and Earth's dynamic forces.
As evening covers Secca Delle Fumose, the local air temperature is measured at 27°C. The current wave height at the surface is recorded at 0.4 m. These late-day readings characterize the surface conditions for the night.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
Secca delle Fumose presents a unique underwater environment shaped by both ancient human endeavor and ongoing volcanic activity. Divers will find several historical pylons, thought to have once protected the ancient Portus Julius, now colonized by diverse marine life.
These submerged structures offer a complex topography to explore. A defining characteristic of the site is the presence of active fumaroles; these are columns of gaseous bubbles that emanate from the seabed, a clear indication of the area’s volcanic origin. Sulfur deposits are often visible across the seabed, adding to the distinctive geological feel.
Reaching a maximum depth of 12 m (39 ft), the site is accessible for various certification levels, primarily through boat entry. The saltwater environment cradles a vibrant ecosystem around these unique geological features, making for an engaging dive.
Secca Delle Fumose
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Secca Delle Fumose show 27° air, 24° sea temperature, 0.4 m waves, and 22 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
For optimal diving conditions, consider visiting Secca delle Fumose during the warmer months, typically from June through October. June stands out as an excellent month, boasting average air temperatures around 24°C (75°F) and minimal rain, making surface intervals pleasant. Throughout July and August, air temperatures remain high, averaging 27°C (81°F) and 27°C (81°F) respectively, paired with low rainfall. While these months offer good dive scores, conditions remain favorable into September and October, with average air temperatures still a comfortable 23°C (73°F) and 20°C (68°F) respectively. In contrast, winter months like January and February see cooler air temperatures of approximately 11°C (52°F) and 12°C (54°F), along with higher wave heights, making diving less consistently comfortable.
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
Descending into Secca delle Fumose, divers quickly encounter the archaeological remains and geological activity that define this site. The maximum depth reached here is 12 meters (39 feet), keeping the dive within recreational limits. As you explore the shallower sections, you'll find the ancient pylons heavily encrusted with marine organisms. Visibility generally varies depending on local currents and recent weather, but often allows for clear views of the structures and surrounding seabed. Water temperatures are not consistently reported but typically align with Mediterranean seasonal norms, being warmest in late summer. Active fumaroles release gaseous bubbles, creating a surreal visual effect and reminding divers of the area's volcanic heart. While a gentle current may sometimes be present, conditions are generally considered manageable for most certified divers.
Dive Difficulty & Safety Guidelines
Diving at Secca delle Fumose requires an awareness of its unique geological characteristics. The active fumaroles release gases from the seabed, so maintaining a safe distance and avoiding direct contact with the gas plumes is a key consideration. While not explicitly reported as hazardous, divers should be mindful of the volcanic origin and the sulfur deposits found almost everywhere on the seabed. Always dive with a buddy and conduct thorough equipment checks before entry. Adhering to standard safe diving practices, such as monitoring your depth, bottom time, and air supply, is crucial. It’s also advisable to consult with local dive professionals regarding current conditions, especially concerning any changes in volcanic activity or localized currents, before entering the water.
Recommended Equipment
- Dive Computer
- DSMB
This gear list is based on verified equipment signals for Secca Delle Fumose, Italy. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Divers planning deeper dives may feel cooler than those staying in shallower areas.
Many divers find that 3-5mm wetsuit offers a comfortable balance between warmth and mobility. A hood or vest is suggested for sensitive divers due to surface winds. Conditions in the coming days are expected to stay within a similar temperature range.
Divers heading to Secca Delle Fumose today should expect water temperatures around 24°C (75°F). Surface air temperatures are resting at 27°C (80°F).
Emergency & Medical Support
Essential information to help you plan your dive trip to Secca delle Fumose.

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.
IPER SRL
POZZUOLI (NA), Italy•Approx. 3 km straight-line
IPER SRL
Facility 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.
ISTITUTO PARTENOPEO DI RIABILITAZIONE - IPAR
Napoli, Italy•Approx. 10 km straight-line
ISTITUTO PARTENOPEO DI RIABILITAZIONE - IPAR
Facility 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.
Centro Iperbarico Policlinico Federico II Napoli
ICU CapableNapoli, Italy•Approx. 12 km straight-line
Centro Iperbarico Policlinico Federico II Napoli
ICU 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 Secca Delle Fumose
While navigating the ancient pylons, divers will notice these structures are richly colonized by diverse flora and fauna, providing habitat for numerous smaller marine species. The unique environment around the active fumaroles and sulfur deposits also supports specific organisms adapted to these conditions. Reports indicate that larger pelagic creatures such as sharks, whales, dolphins, and turtles might occasionally be sighted in the broader regional waters. However, the consistent presence of robust flora and fauna on the historical pillars offers a more reliable observation, showcasing the intricate life supported by this unusual site.
Dive Sites Near Secca Delle Fumose
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Dive Centers Near Secca Delle Fumose
Working Hours
Today: 08:00 - 20:00
Sea Point
Subaia Diving Center
Napoli Diving Center
Barracuda Diving
Centro Sub Campi Flegrei
Nearest Airports
Nearest airports to help plan travel to this dive area.
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Search Flights on ExpediaFrequently Asked Questions
What is the maximum depth at Secca delle Fumose?
The maximum depth for diving at Secca delle Fumose is 12 m (39 ft), making it suitable for divers with various certification levels, including Open Water Diver.
What are fumaroles, and are they safe to dive near?
Fumaroles are vents in the seabed that release gaseous bubbles of volcanic origin. While observing them is part of the unique experience, divers should maintain a respectful distance and avoid direct contact with the gas plumes as a standard safety precaution.
Are there any archaeological features to see?
Yes, divers will encounter several submerged pylons, believed to be part of an ancient structure that protected Portus Julius. These historical elements are now heavily colonized by marine life.
What kind of entry method is used for this dive site?
Secca delle Fumose is primarily accessed by boat. This allows for convenient positioning over the site, which is an offshore feature.
What are the water temperatures like?
Specific water temperatures are not consistently reported, but Mediterranean waters are typically warmest from late summer into early autumn, cooling significantly during the winter months. Divers should check local conditions before their dive and plan appropriate thermal protection.
What marine life can be seen?
The ancient pylons are rich in flora and fauna, providing habitat for many smaller fish and invertebrates. While reports of larger pelagic species exist for the region, the primary marine life highlight at the site itself is the ecosystem thriving on and around the historical structures and unique volcanic features.
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Secca Delle Fumose
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Secca Delle Fumose show 27° air, 24° sea temperature, 0.4 m waves, and 22 km/h wind. Forecast data is refreshed regularly to ensure accuracy.









