Dee Why

Northern Beaches, NSW · Relative shark interaction risk assessment

← All beachesMOCKAssessed 3 Sept 2026, 9:05 am·Model 0.1.0-dev

Interaction risk

MODERATE37/100

Experimental · uncalibrated

Combined confidence: MODERATE(58%)

Exposure 0.55

Hazard 0.56

Why?

•No live shark detections — this is not an operational alert
•Water temperature (~18.0°C) favours great white shark thermal suitability

Shark interaction risk is assessed as MODERATE (public index 37/100) with moderate combined confidence. Primary drivers: No live shark detections — this is not an operational alert; Water temperature (~18.0°C) favours great white shark thermal suitability. No live shark-detection feed is connected. This is an experimental development assessment, not an operational warning. Always follow lifeguard instructions, beach closures, and official NSW SharkSmart advice. vShark is not a government or SLSA product.

Location map

NSW Beachwatch — recreational water quality

Official pollution forecast and latest lab result from NSW Beachwatch. This is not a vShark score and not a swim clearance. Always follow Beachwatch, flags and lifeguards.

Pollution forecast

UnlikelyLIVE

3 Sept 2026, 6:00 am

Latest lab result

—UNAVAILABLE

Sites: Dee Why Beach

Water quality © NSW Beachwatch (DCCEEW), CC BY 4.0.

Species contributions (development model)

Great white sharkPs 0.79 · contrib 0.434

Thermal 0.95 · Detection 0.00

Bull sharkPs 0.30 · contrib 0.048

Thermal 0.04 · Detection 0.00

Tiger sharkPs 0.35 · contrib 0.079

Thermal 0.14 · Detection 0.00

Recent detections

Great white sharkMOCK
verified sighting · 10 Aug 2026, 4:18 pm

Ocean / environmental observations

air_temperatureLIVE10.2 °C
rainfall_24hLIVE0 mm
sstLIVE18 °C
swell_heightLIVE0.86 m
wind_direction_degLIVE264 deg
wind_speed_knLIVE5.2 kn

Data gaps

turbidity proxy
live detections
recent detections

Missing data reduces confidence; it does not mean low risk.

Recent assessment history

When	Band	Index	Confidence	Model
3 Sept 2026, 9:05 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 9:01 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 8:56 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 7:33 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 7:32 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 7:31 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 7:01 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 6:16 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 6:11 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 6:01 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 5:29 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 4:53 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 4:01 am	MODERATE	37	MODERATE	0.1.0-dev
3 Sept 2026, 3:17 am	MODERATE	37	MODERATE	0.1.0-dev