Four Mile Reef
4 Mile Reef is a captivating dive site located on our stunning 4 Mile Reef in Busselton, Australia. With a maximum depth of 18m and excellent visibility reaching up to 14m, this beginner-friendly dive promises a remarkable underwater experience. Boasting thriving coral formations and an abundance of captivating marine life, including Bullseye fish, Wobbegongs, Port Jackson Sharks, octopuses, cuttlefish, and various species of rays, 4 Mile Reef is a haven for divers of all skill levels. Situated just a short boat ride away from the marina in the City of Busselton, Western Australia, this dive site is a must-visit for those seeking an unforgettable underwater adventure.
Diving Conditions Score for Four Mile Reef
6.5
Above AverageDecent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Four Mile Reef
Depth
18m
Visibility
14m
Experience Level
beginner
Weather Conditions for Four Mile Reef
Wave Height
0.54m
Wind Speed
10 m/s
Water Temp
15.7°C
Visibility
15km
Cloud Cover
57.5%
Wave Period
10.25s
Air Temperature
20°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Four Mile Reef
Alpha
Dive Score Chart for Four Mile Reef
Best time to dive: 6:00 with score 7.996666666666666/10. Water conditions: Waves 0.54m, Wind 10 m/s.Best night dive time: 0:00 with score 7.496666666666666/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Four Mile Reef: 06:00
Sunset at Four Mile Reef: 18:00
Optimal diving conditions at Four Mile Reef are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.
Best Overall
6:00Score: 8.0/10
Waves: 0.54m (8s), Wind: 10 m/s
Best Night
0:00Score: 7.5/10
Waves: 0.54m, Wind: 10 m/s
Seasonal Analysis for Four Mile ReefAlpha
Historical patterns and best seasons for diving at Four Mile Reef
The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.
Monthly Dive Score Analysis - Seasonal Diving Conditions
Higher values indicate better diving conditions
Seasonal DiveScore Chart
This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.
Higher values indicate better diving conditions
Best Season for Four Mile Reef
Summer
Avg. Score: 10.0/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Four Mile Reef
May
Score: 10.0
June
Score: 10.0
July
Score: 10.0
Ideal Conditions for Four Mile Reef
Water Temp
23.4°C / 74.1°F
June
Visibility
20.1m / 65.9ft
October
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for Four Mile Reef
Four Mile Reef follows southern hemisphere patterns with June being the warmest month (23.4°C) and December the coldest (19.4°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.
Last updated: 1 min. ago - Jun 22, 2026
Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.
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