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IntermediateBoat entry

Half Moon Wall

Lighthouse Reef, Belize
Open Water suggested12–30 m (39–98 ft) depthBoat entryRash guard or 2mm shorty typical

Boat dive — see Entry & access.

Half Moon Wall at a glance

Half Moon Wall is an intermediate boat dive site in Lighthouse Reef, Belize with depths of 12–30 m (39–98 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see Shaggy horny sponge, Yellowtail Snapper, and Pelagic Porcupinefish. Recent reports put the water around 29°C (85°F). Check the latest conditions and entry details before you go.

Favorable window now· until 18:00 · sunset 17:21

Forecast for this hour · 9:00 · run 10 h ago
0.9 m (3.0 ft)waves — under a meter expected (waves — about three feet expected)

Tap a factor for its source and model point · Forecast 29°C · seasonal avg 30°C ( · Forecast 85°F · seasonal avg 86°F)

Site hazards: Depth creep, wall or blue-water disorientation, current, offshore boat logistics, fragile reef contact, and protected-area rules.

Read the full hazards ↓

Dive windows this week

Smallest waves: Sat
Mon6:00–18:00 favorable

0.8 m waves · 11 kn wind (2.7 ft waves · 11 kn wind)

Tue6:00–18:00 favorable

0.7 m waves · 11 kn wind (2.2 ft waves · 11 kn wind)

Wed6:00–18:00 favorable

0.6 m waves · 8 kn wind (1.9 ft waves · 8 kn wind)

Thu6:00–18:00 favorable

0.5 m waves · 4 kn wind (1.6 ft waves · 4 kn wind)

Fri6:00–18:00 favorable

0.5 m waves · 5 kn wind (1.7 ft waves · 5 kn wind)

Sat6:00–18:00 favorable

0.3 m waves · 4 kn wind (1.1 ft waves · 4 kn wind)

SunNot in the forecast yet

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 5:24 · Sunrise 5:46 · Sunset 17:21 · some windows run past sunset

Source: Open-Meteo marine · model point 0.6 km from site · updated 25 Oct, 23:24 GMT-6

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Half Moon Wall

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Shaggy horny sponge, Yellowtail Snapper, Pelagic Porcupinefish
Best time: Researchable year-round when offshore sea state allows. Confirm wind, swell, visibility, and whether the operator itinerary includes Half Moon Caye Wall.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 52% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 1.5 m (5.0 ft), wind has typically been 17 knots
  2. February, 44% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 1.5 m (4.9 ft), wind has typically been 18 knots
  3. March, 41% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.5 m (4.9 ft), wind has typically been 17 knots
  4. April, 53% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.5 m (5.0 ft), wind has typically been 18 knots
  5. May, 41% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.4 m (4.7 ft), wind has typically been 17 knots
  6. June, 44% of days have historically been favorable, water has typically been 30°C (85°F), waves have typically been 1.5 m (5.0 ft), wind has typically been 18 knots
  7. July, 45% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 1.4 m (4.6 ft), wind has typically been 18 knots
  8. August, 87% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 1.0 m (3.2 ft), wind has typically been 15 knots
  9. September, 96% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 0.9 m (3.1 ft), wind has typically been 14 knots, historically most favorable
  10. October, 83% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 15 knots
  11. November, 71% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.3 m (4.3 ft), wind has typically been 15 knots
  12. December, 54% of days have historically been favorable, water has typically been 28°C (83°F), waves have typically been 1.5 m (4.8 ft), wind has typically been 16 knots

September has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Featured wall dive guide

Half Moon Wall dive guide

Half Moon Wall is useful as a featured guide because divers search it as a Caribbean wall-dive planning term. This page focuses on practical research: wall profile, boat logistics, marine-life expectations, conservation context, and the need to verify exact operator location before booking.

Open mapCheck conditionsCompare nearby sitesRead reviews

PickADive guides and forecast windows are planning context, not a safety clearance. Confirm current conditions, rules, training limits, and operator guidance before diving — the decision is yours.

Difficulty
Route-dependent
Access
Confirm boat plan
Best for
Wall-dive research
Planning note
Verify coordinates
Names can vary by operator.
Depth
12-30m
Confirm your plan against current conditions and training.
Best time
See timing notes
Researchable year-round when offshore sea state allows. Confirm wind, swell, visibility, and whether the operator itinerary includes Half Moon Caye Wall.

Why dive Half Moon Wall

The value of this guide is search clarity. "Half Moon Wall" can appear in Caribbean itinerary research, and divers need help moving from a famous-sounding wall name to practical questions about where the operator goes, how deep the route runs, and what conditions are expected.

How to dive it

Treat it as a guided boat dive unless a local operator gives different instructions. Ask for the exact mooring or route, maximum planned depth, current expectations, surface interval plan, and whether the dive is paired with another site on the same trip.

Marine life and site character

Wall dives are usually researched for reef scenery, drop-off structure, fish movement, and the chance of larger passersby. Sightings are never guaranteed, so choose the site for the overall route and conditions instead of one hoped-for animal.

Best season and conditions

Use operator seasonality and current conditions together. Wind, swell, current, visibility, and boat schedule can all matter more than a broad destination calendar.

Hazards and diver readiness

Depth creep, current, blue-water disorientation, boat pickup logistics, and separation from the wall are the main planning concerns. Carry appropriate signaling gear and stay within the guide plan.

Local tips

Because the name can be used differently across operators and maps, confirm the exact country, reef system, and site coordinates when booking or comparing reviews.

Common questions about Half Moon Wall

Is Half Moon Wall a beginner dive?

It depends on the actual route, current, depth, and operator plan. Wall dives can become advanced quickly if divers descend too deep or conditions change.

What should I ask the dive operator?

Ask for the exact site location, maximum planned depth, current expectations, pickup plan, required certification, and whether reef or marine-park rules apply.

What makes a wall dive different from a shallow reef?

A wall can make depth control and buddy positioning more important because the bottom may drop away quickly. Plan your maximum depth before descending.

Why does PickADive say to verify the exact location?

Imported map data can be incomplete. For famous or similarly named sites, the safest research path is to confirm coordinates and local naming with the operator.

Data updated June 2026

Site details

Half Moon Wall is the wall-dive area associated with Half Moon Caye on Lighthouse Reef, Belize. It is commonly researched with Great Blue Hole trips because Lighthouse Reef combines a shallow lagoon, coral shelf edge, vertical walls, Half Moon Caye Natural Monument, and nearby famous reef sites. Plan it as a guided boat wall dive where route and maximum depth are set by the operator.

boatreefwall

Depth creep, wall or blue-water disorientation, current, offshore boat logistics, fragile reef contact, and protected-area rules.

Reviews

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