Diving atM-14 (United States)
Mile Marker 14, also known as the Olowalu Dive & Snorkel Site, presents an extensive yet relatively shallow environment. Its location along Highway 30, south of Lahaina, makes it a readily accessible shore dive option. Divers can expect channels running between significant coral formations, offering a structured underwater landscape close to the shore.
Evening condition tracking at M-14 features an air temperature of 28.5°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
M-14 primarily functions as a reliable alternative for clear conditions, particularly when west Maui's shore dives are impacted by runoff or high surf. The site features a series of distinct channels, generally 3-8 m (10-25 ft) deep, making it highly suitable for less experienced divers or those undertaking introductory scuba experiences.
For those aiming for greater depths, a sustained kick approximately 300-400 yards offshore will lead to a gradual slope towards deeper sections of the reef. Here, spur-and-groove reef structures dominate the underwater landscape, providing essential habitat for a variety of small marine life. Its direct accessibility from shore, coupled with a naturally protective position, means calm conditions are frequently encountered even when other local areas are less favorable.
Such an environment encourages unhurried exploration; settling into one spot often reveals a surprising abundance of smaller reef inhabitants. An extensive, shallow layout also supports longer bottom times, ideal for detailed observation and photography.
M-14
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near M-14 show 28° air, 30° sea temperature, 0.2 m waves, and 17 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Planning for M-14 should consider periods of calmer seas and favorable weather to enhance the diving experience. The driest periods, with lower average rainfall around 0.87-2.25 mm (November-December), often align with stable conditions. Air temperatures remain warm throughout the year, ranging from 16.5°C (62°F) in January to 29°C (84°F) in July, ensuring comfortable surface intervals. While water temperature isn't consistently reported, the site's shallow nature means it generally mirrors surface conditions. Wave heights are typically lower from July to September, averaging 0.4-0.6 m, suggesting these months might offer the calmest water for entry and extended exploration.
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
Entering the water at Mile Marker 14 typically involves a careful walk or fin kick through very shallow coral sections, particularly during low tide. The initial dive unfolds within distinct channels, revealing a relatively shallow reef that extends outward. As you move further from shore, beyond approximately 300-400 yards, the reef drops off into deeper areas, providing more extensive exploration opportunities within recreational depth limits. Water clarity can vary, but M-14 is often chosen for its tendency to be clearer than other west-side sites during periods of runoff. Currents are generally mild in the shallower areas, but conditions can shift depending on offshore weather patterns, which is always worth monitoring.
Dive Difficulty & Safety Guidelines
Diving at Mile Marker 14 necessitates awareness of the shallow coral formations near the shore. Care must be taken to avoid cuts, especially when entering or exiting the water at low tide. Although not consistently reported, currents can sometimes be present as you venture into deeper, more exposed sections. Being mindful of your buoyancy control is always crucial to protect the delicate coral ecosystem. It's advisable to check local conditions on the day of your dive, particularly regarding surf and clarity, to ensure a safe and enjoyable experience.
Recommended Equipment
- Dive Computer
This gear list is based on verified equipment signals for M-14, United States. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
For many recreational divers, dive skin or rash guard provides a practical level of insulation in these conditions. Divers who tend to get cold easily may prefer slightly thicker exposure protection.
At the moment, divers exploring M-14 will likely experience water temperatures near 30°C (85°F). Surface air temperatures are resting at 28°C (83°F).
Current forecasts indicate relatively stable conditions for the coming days.
Emergency & Medical Support
Essential information to help you plan your dive trip to M-14.
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 M-14
Once settled on the reef at M-14, divers frequently encounter a rich array of macro creatures. Arrow crabs, various shrimp species, small octopuses, and garden eels are commonly observed. Moray eels can also be spotted within the coral crevices. The site is an excellent spot for patiently observing smaller reef inhabitants, including tiny gobies and cleaner wrasse, which may even approach divers in this unpressured environment. Look for gray angelfish pairs among the gorgonians and brown sponges, adding to the site's biodiversity.
Dive Centers Near M-14
Working Hours
Today: 09:00 - 18:00
Nearest Airports
Nearest airports to help plan travel to this dive area.
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Frequently Asked Questions
What is the typical depth range at M-14?
The main channels at M-14 offer a relatively shallow dive experience, typically between 3-8 m (10-25 ft). For divers seeking greater depths, the reef gradually slopes deeper approximately 300-400 yards offshore.
Is M-14 suitable for beginner divers?
Yes, M-14 is considered a great site for inexperienced divers, including those undertaking introductory scuba or discover scuba programs. Its shallower depths and generally calm conditions are ideal for building confidence.
Why is M-14 sometimes preferred over other sites?
M-14 often serves as a good alternative when other west Maui shorelines experience murky conditions due to runoff or high surf. It tends to maintain better visibility during these times.
Are there any specific hazards to be aware of at M-14?
Divers should be cautious of shallow coral formations, particularly at low tide, to avoid potential cuts during entry and exit. While currents are generally mild, conditions can vary, so always assess the environment.
What kind of marine life can I expect to see?
The site is noted for its abundant macro life, including arrow crabs, various shrimp, octopuses, and eels. You might also spot garden eels and gray angelfish among the coral structures.
Is M-14 a good spot for snorkeling?
Yes, M-14 is also highly regarded as an excellent snorkeling location. Its extensive shallow coral formations and diverse marine life make it an enjoyable site for surface viewing.
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M-14
Conditions are Excellent
Best Dive Window
07:00 - 14:00
Optimal conditions expected
Current conditions near M-14 show 28° air, 30° sea temperature, 0.2 m waves, and 17 km/h wind. Forecast data is refreshed regularly to ensure accuracy.