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IntermediateBoat entry

Manta Bay

Bali, Indonesia
Boat entryRash guard or 2mm shorty typical

Boat dive — see Entry & access.

Manta Bay at a glance

Manta Bay is an intermediate boat dive site in Bali, Indonesia. Typically most favorable Nov · from 3 years of archive data. Divers commonly see Giant Manta. Recent reports put the water around 27°C (81°F). Check the latest conditions and entry details before you go.

Moderate window now· until 16:00, then favorable until 19:00 · sunset 18:13

Forecast for this hour · 13:00 · run 12 h ago
2.1 m (6.8 ft)waves — about two meters expected (waves — about seven feet expected)

Tap a factor for its source and model point · Forecast 27°C · seasonal avg 28°C ( · Forecast 81°F · seasonal avg 83°F)

Dive windows this week

Mon13:00–16:00 moderate, 16:00–19:00 favorable

2.1 m waves · 5 kn wind (6.9 ft waves · 5 kn wind)

Tue6:00–19:00 favorable

1.8 m waves · 5 kn wind (5.8 ft waves · 5 kn wind)

Wed6:00–16:00 favorable, 16:00–19:00 moderate

1.6 m waves · 7 kn wind (5.1 ft waves · 7 kn wind)

Thu6:00–15:00 favorable, 15:00–18:00 moderate, 18:00–19:00 favorable

1.2 m waves · 7 kn wind (4.0 ft waves · 7 kn wind)

Fri6:00–16:00 favorable, 16:00–18:00 moderate, 18:00–19:00 favorable

1.1 m waves · 7 kn wind (3.5 ft waves · 7 kn wind)

Sat6:00–19:00 favorable

1.1 m waves · 6 kn wind (3.4 ft waves · 6 kn wind)

Sun6:00–19:00 favorable

1.0 m waves · 5 kn wind (3.2 ft waves · 5 kn wind)

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 5:29 · Sunrise 5:50 · Sunset 18:13 · some windows run past sunset

Source: Open-Meteo marine · model point 3.1 km from site · updated 26 Oct, 01:21 GMT+8

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Manta Bay

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?

Best months, historically

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

  1. January, 92% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 8 knots
  2. February, 93% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 1.2 m (3.8 ft), wind has typically been 7 knots
  3. March, 98% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 7 knots
  4. April, 93% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 6 knots
  5. May, 92% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 7 knots
  6. June, 83% of days have historically been favorable, water has typically been 29°C (84°F), waves have typically been 1.4 m (4.5 ft), wind has typically been 7 knots
  7. July, 77% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.5 m (4.8 ft), wind has typically been 7 knots
  8. August, 80% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.4 m (4.7 ft), wind has typically been 7 knots
  9. September, 82% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.4 m (4.4 ft), wind has typically been 7 knots
  10. October, 88% of days have historically been favorable, water has typically been 28°C (83°F), waves have typically been 1.3 m (4.2 ft), wind has typically been 6 knots
  11. November, 100% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 7 knots, historically most favorable
  12. December, 96% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 1.2 m (3.8 ft), wind has typically been 8 knots

November 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 recorded at this site, by month

Recorded observations — evidence of past sightings, not a promise of what you’ll encounter.

  • Giant Manta recorded here May, Oct–Nov (3 records)

    Mobula birostrismost recent 2017

  • Chiloscyllium punctatum recorded here Dec (1 record)

    most recent 2011

  • Reef Manta Ray recorded here Dec (1 record)

    Mobula alfredimost recent 2011

Newest record here: 2017. Counts are occurrence records near this site from public biodiversity datasets (GBIF), grouped by calendar month across all sampled years. Sightings vary — past records are context, not a prediction.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated June 2026

Site details

One of two Manta Bay divesites. Listen to experienced boat captains, these sites have the potential for very strong surges. Do not go too close to the cliffs where the waves break. Only thing here to see is the numerous mantarays usually feeding.

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

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