
Diving atPortulano House Reef (Philippines)
Portulano House Reef stands as a prominent and accessible dive site within the Balayan Bay Marine Protected Area. Its location within a private cove ensures sheltered conditions, often contributing to consistent underwater visibility. This reef is celebrated for its reputation as a vibrant marine sanctuary, offering abundant marine life encounters directly from shore. It’s part of a larger commitment to conservation and responsible diving practices in one of the world's most biodiverse regions.
Evening condition tracking at Portulano House Reef features an air temperature of 29°C. We have recorded wave heights measuring 0.3 m during this period. These figures outline the environmental parameters currently present.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
A dive at Portulano House Reef immerses individuals in a vibrant, sloping reef system, immediately accessible from shore. Its colorful environment is dominated by hard corals and a dense cover of various sponges, anemones, and other soft corals.
It's a versatile spot, suitable for a range of dive experiences from novice to advanced, with recreational divers finding ample exploration within shallower sections. The reef descends to a maximum depth of 60 m (196 ft), allowing for extended bottom times at different levels. Beach entry is comfortable, leading smoothly into the reef, sandy bottom, and ocean dive types.
Divers frequently encounter resident schools of scad fish and bat/spade fish. Turtles are a common sight, gracefully navigating the coral formations.
Smaller, intriguing inhabitants include electric clams, ribbon eels, parrotfish, surgeonfish, butterflyfish, and clownfishes, all adding to the reef's rich tapestry. Sandy stretches often reveal stingrays and flounders.
Occasionally, more elusive creatures such as ambon scorpionfish and demon stingers appear. For night diving, it's an excellent dive for spotting critters like bobtail squids, octopus, and ghostpipefishes, offering unique underwater photography opportunities.
Portulano House Reef
Conditions are Good
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Portulano House Reef show 29° air, 31° sea temperature, 0.2 m waves, and 21 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Optimal diving conditions at Portulano House Reef generally prevail during April, May, June, and December, earning these months an 'Excellent' dive score. During this period, air temperatures are particularly comfortable, ranging from 28°C (82°F) in June to 29.5°C (85°F) in May. Rainfall is notably lower, with amounts from 2.02mm in April to 4.33mm in May, ensuring minimal surface disruption. The remaining months of the year, from January to March and July to November, consistently offer 'Good' diving conditions. Air temperatures remain warm, typically between 26°C (79°F) in January and 27.5°C (82°F) in July and August. While rainfall sees an increase in these months, peaking at 12.7mm in October and 10.65mm in July, it typically does not significantly hinder diving activities. Wave heights generally remain manageable throughout the year, usually between 0.4m (1.3 ft) and 0.8m (2.6 ft), contributing to pleasant surface conditions.
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
Conditions at Portulano House Reef often present a gently sloping reef, beginning in shallow depths directly from shore and extending down to its maximum depth. This makes it an ideal area for divers of all certification levels, from Open Water to Deep Diver. The reef structure, characterized by very colorful hard corals and extensive dense cover of various sponges and anemones, creates a vibrant ecosystem. Water entry is straightforward via the shore/beach, offering easy access to the underwater environment. Water temperature for this specific site is not consistently reported in the system data; however, similar reefs in the region typically experience waters around 27-30°C (81-86°F), offering warm and comfortable conditions throughout the year. Strong currents are not frequently reported for this house reef, though conditions can vary depending on tides and weather patterns.
Dive Difficulty & Safety Guidelines
Navigating Portulano House Reef requires attention to responsible diving practices, particularly given its status as a Marine Sanctuary and its ongoing coral restoration project. Maintaining excellent buoyancy control is essential to avoid contact with the dense hard and soft coral cover, protecting both the diver and the fragile ecosystem. Divers should always plan their profiles within their certification limits, especially when considering the maximum depth of 60 m (196 ft). Observing marine life without disturbing it is paramount; do not touch or harass any creatures. The resort itself promotes conservation and responsible diving, encouraging all divers to uphold these principles during their visit.
Recommended Equipment
Technical depth range. Advanced planning, gas management, and appropriate certification required.
- Dive Computer
- DSMB
- Primary & Backup Lights
- Hard-soled Dive Boots
This gear list is based on verified equipment signals for Portulano House Reef, Philippines. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Thermal protection such as dive skin or rash guard is commonly used for water temperatures in this range.
Divers planning a dive at Portulano House Reef today will likely encounter water temperatures close to 31°C (88°F). Surface air temperatures are resting at 29°C (84°F).
The next few days appear likely to bring similar environmental conditions.
Due to technical issues with our weather providers, live updates are temporarily delayed. The data above reflects the conditions at the time of the last successful fetch.
Emergency & Medical Support
Essential information to help you plan your dive trip to Portulano House Reef.

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 World.
+1-919-684-9111- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at Portulano House Reef
The underwater landscape of Portulano House Reef provides a rich habitat that supports a wide array of marine species. Here, divers can frequently observe turtles making their way across the reef, alongside schools of scad fish and resident bat/spade fish. Among the vibrant hard and soft corals, numerous smaller creatures thrive. Electric clams, ribbon eels, parrotfish, and various surgeonfish, butterflyfish, and clownfishes are commonly found navigating the reef. The open sandy areas often reveal stingrays and flounders, blending into the substrate. Occasional sightings of unique species like ambon scorpionfish and demon stingers are also reported. Night dives further expand the opportunities to spot nocturnal critters, including bobtail squids, octopus, and ghostpipefishes, which emerge to offer distinct photographic subjects.
Dive Sites Near Portulano House Reef
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Dive Centers Near Portulano House Reef
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Search Flights on ExpediaFrequently Asked Questions
What is the maximum depth at Portulano House Reef?
Portulano House Reef descends to a maximum depth of 60 m (196 ft). Divers can explore various levels according to their certification and experience, with plenty to see in shallower areas.
What kind of corals can be seen here?
Characterized by a very colorful sloping structure, the reef features mostly hard corals. Dense coral cover of various sponges, anemones, and other soft corals also contributes to its vibrant ecosystem.
Is Portulano House Reef suitable for night diving?
Yes, Portulano House Reef is considered an excellent site for night diving. It offers numerous critters for photography, such as bobtail squids, octopus, and ghostpipefishes, which are more active after sunset.
What types of marine life are commonly encountered?
Common sightings include turtles, schools of scad fish, bat/spade fish, electric clams, ribbon eels, parrotfish, surgeonfish, butterflyfish, and clownfishes. In sandy areas, stingrays and flounders are often seen, with occasional appearances of ambon scorpionfish and demon stingers.
Is shore entry available at this dive site?
Yes, Portulano House Reef offers convenient shore entry. Divers can access the reef directly from the beach, making it easily accessible for various dive types.
What courses are recommended for diving this site?
Recommended courses include PADI Open Water Diver, PADI Enriched Air Diver, PADI Rescue Diver, and PADI Deep Diver due to the site's varied depths. PADI Night Diver and PADI Underwater Photographer are also beneficial for specialized experiences here.
Is there a coral restoration project here?
Yes, an ongoing 'Coral Crusade' conservation project is active. Divers can learn about and observe how corals of opportunity are rescued and transplanted to the reef, contributing to its health.
How accessible is the Portulano House Reef?
Portulano House Reef is highly accessible, situated in a private cove within Balayan Bay. It's located north of Anilao, Batangas, and is approximately a two-hour drive from Manila International Airport, offering easy access to its beautiful reef.
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Portulano House Reef
Conditions are Good
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near Portulano House Reef show 29° air, 31° sea temperature, 0.2 m waves, and 21 km/h wind. Forecast data is refreshed regularly to ensure accuracy.









