Whale Island (Hon Ong)

Rash guard or 2mm shorty typical

Whale Island (Hon Ong) at a glance

Whale Island (Hon Ong) is a dive site in Vietnam. Typically most favorable Jul–Aug · from 3 years of archive data. Recent reports put the water around 30°C (85°F). Check the latest conditions and entry details before you go.

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

Forecast for this hour · 7:00 · run 6 h ago

0.2 m (0.7 ft)waves — under half a meter expected (waves — under a foot expected)

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

Dive windows this week

Lightest wind: Mon

Mon

0.2 m waves · 6 kn wind (0.7 ft waves · 6 kn wind)

Tue

0.3 m waves · 13 kn wind (0.9 ft waves · 13 kn wind)

Wed

0.3 m waves · 11 kn wind (1.0 ft waves · 11 kn wind)

Thu

0.4 m waves · 11 kn wind (1.4 ft waves · 11 kn wind)

Fri

0.5 m waves · 11 kn wind (1.6 ft waves · 11 kn wind)

Sat

0.4 m waves · 8 kn wind (1.4 ft waves · 8 kn wind)

Sun

0.4 m waves · 9 kn wind (1.3 ft waves · 9 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 5:12 · Sunrise 5:34 · Sunset 17:18 · some windows run past sunset

Source: Open-Meteo marine · model point 6.5 km from site · updated 26 Oct, 00:26 GMT+7

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Whale Island (Hon Ong)

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, 25% of days have historically been favorable, water has typically been 24°C (76°F), waves have typically been 1.3 m (4.4 ft), wind has typically been 25 knots
February, 49% of days have historically been favorable, water has typically been 25°C (77°F), waves have typically been 1.1 m (3.5 ft), wind has typically been 19 knots
March, 75% of days have historically been favorable, water has typically been 26°C (78°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 16 knots
April, 89% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 14 knots
May, 96% of days have historically been favorable, water has typically been 30°C (85°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 12 knots
June, 92% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 14 knots
July, 97% of days have historically been favorable, water has typically been 28°C (83°F), waves have typically been 0.6 m (2.0 ft), wind has typically been 14 knots, historically most favorable
August, 97% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 0.5 m (1.8 ft), wind has typically been 13 knots, historically most favorable
September, 93% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 0.6 m (1.8 ft), wind has typically been 12 knots
October, 73% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 16 knots
November, 38% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 22 knots
December, 23% of days have historically been favorable, water has typically been 26°C (79°F), waves have typically been 1.3 m (4.2 ft), wind has typically been 24 knots

July and August have 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.

boatmuckreef

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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