Waterfall Bay Sea Caves (Cathedral Cave), Tasman Peninsula

Tasmania, AustraliaDirections

7mm or semi-dry + hood typical

Waterfall Bay Sea Caves (Cathedral Cave), Tasman Peninsula at a glance

Waterfall Bay Sea Caves (Cathedral Cave), Tasman Peninsula is a dive site in Tasmania, Australia. Typically most favorable Nov · from 3 years of archive data. Recent reports put the water around 15°C (58°F). Check the latest conditions and entry details before you go.

Favorable window now· until 20:00 · sunset 19:43

Forecast for this hour · 12:00 · run 19 h ago

0.6 m (2.0 ft)waves — under a meter expected (waves — about two feet expected)

Tap a factor for its source and model point · Forecast 15°C · seasonal avg 12°C ( · Forecast 58°F · seasonal avg 54°F)

Dive windows this week

Lightest wind: Fri

Sun

0.6 m waves · 8 kn wind (2.1 ft waves · 8 kn wind)

Mon

0.6 m waves · 11 kn wind (2.0 ft waves · 11 kn wind)

Tue

0.6 m waves · 12 kn wind (1.8 ft waves · 12 kn wind)

Wed

0.6 m waves · 14 kn wind (2.0 ft waves · 14 kn wind)

Thu

0.6 m waves · 14 kn wind (1.9 ft waves · 14 kn wind)

Fri

0.4 m waves · 5 kn wind (1.1 ft waves · 5 kn wind)

Sat

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 5:31 · Sunrise 6:01 · Sunset 19:43 · some windows run past sunset

Source: Open-Meteo marine · model point 9.5 km from site · updated 24 Oct, 16:21 GMT+11

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Waterfall Bay Sea Caves (Cathedral Cave), Tasman Peninsula

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.

January, 87% of days have historically been favorable, water has typically been 18°C (64°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 15 knots
February, 87% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 0.9 m (2.9 ft), wind has typically been 15 knots
March, 86% of days have historically been favorable, water has typically been 18°C (64°F), waves have typically been 0.8 m (2.8 ft), wind has typically been 15 knots
April, 88% of days have historically been favorable, water has typically been 17°C (63°F), waves have typically been 0.9 m (2.9 ft), wind has typically been 13 knots
May, 91% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 13 knots
June, 83% of days have historically been favorable, water has typically been 14°C (57°F), waves have typically been 1.0 m (3.2 ft), wind has typically been 13 knots
July, 80% of days have historically been favorable, water has typically been 13°C (55°F), waves have typically been 1.0 m (3.2 ft), wind has typically been 15 knots
August, 88% of days have historically been favorable, water has typically been 13°C (55°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 14 knots
September, 80% of days have historically been favorable, water has typically been 12°C (54°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 17 knots
October, 65% of days have historically been favorable, water has typically been 12°C (54°F), waves have typically been 0.9 m (3.0 ft), wind has typically been 18 knots
November, 93% of days have historically been favorable, water has typically been 13°C (56°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 14 knots, historically most favorable
December, 89% of days have historically been favorable, water has typically been 15°C (60°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 15 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

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

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

Data updated July 2026

Site details

No description for this site yet — divers who know it can suggest one below.

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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