Sonic Boom Cave
A short swim from Big Eyes Lair, divers can explore Sonic Boom cave on the same dive. The unique feature of this underwater cave is its booming sound, caused by the powerful swell crashing at the back. This loud noise can be heard from a distance and creates an immersive experience for divers. It is advisable to enter the narrow cave when the conditions are calmer to ensure safety.
The Sonic Boom cave is home to a diverse range of marine species, including Blue Maomao, Paua, and Gem Nudibranchs. Outside of the cave, divers can also spot Snapper and Wrasse among the vibrant reef fish population.
Situated in the beautiful Cape Brett Track area near Rawhiti, Bay of Islands-Whangaroa Community, in New Zealand's Far North District, this dive site offers an exciting opportunity for advanced divers. Although visibility may be limited, diving enthusiasts can still enjoy the unique experience of exploring this cave. With a maximum depth of 15m at the entrance, the cave gradually becomes shallower towards the back.
The Sonic Boom cave is home to a diverse range of marine species, including Blue Maomao, Paua, and Gem Nudibranchs. Outside of the cave, divers can also spot Snapper and Wrasse among the vibrant reef fish population.
Situated in the beautiful Cape Brett Track area near Rawhiti, Bay of Islands-Whangaroa Community, in New Zealand's Far North District, this dive site offers an exciting opportunity for advanced divers. Although visibility may be limited, diving enthusiasts can still enjoy the unique experience of exploring this cave. With a maximum depth of 15m at the entrance, the cave gradually becomes shallower towards the back.
Diving Conditions Score for Sonic Boom Cave
5
AverageAverage conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Sonic Boom Cave
Experience Level
advanced
Weather Conditions for Sonic Boom Cave
Wave Height
1.18m
Wind Speed
16.3 m/s
Water Temp
17.4°C
Visibility
46.38km
Cloud Cover
1%
Wave Period
8.65s
Air Temperature
17.2°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Sonic Boom Cave
Alpha
Dive Score Chart for Sonic Boom Cave
Best time to dive: 12:00 with score 6.1364/10. Water conditions: Waves 1.32m, Wind 15.2 m/s.Best night dive time: 0:00 with score 6.035204868913858/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Sonic Boom Cave: 06:00
Sunset at Sonic Boom Cave: 18:00
Optimal diving conditions at Sonic Boom Cave 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
12:00Score: 6.1/10
Waves: 1.32m (8.1s), Wind: 15.2 m/s
Safest Overall
6:00Score: 6.1/10
Waves: 1.2m (8.45s), Wind: 14.1 m/s
Best Night
0:00Score: 6.0/10
Waves: 1.18m, Wind: 12.9 m/s
Seasonal Analysis for Sonic Boom CaveAlpha
Historical patterns and best seasons for diving at Sonic Boom Cave
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 Sonic Boom Cave
Summer
Avg. Score: 7.9/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Sonic Boom Cave
July
Score: 8.0
June
Score: 7.8
August
Score: 7.8
Ideal Conditions for Sonic Boom Cave
Water Temp
18.4°C / 65.1°F
February
Visibility
12.8m / 42.0ft
December
Wave Height
1.4m / 4.6ft
December
Wave Period
8.0s
January
Seasonal Insights for Sonic Boom Cave
Sonic Boom Cave follows southern hemisphere patterns with February being the warmest month (18.4°C) and September the coldest (12.0°C). The calmest conditions typically occur in December with average wave heights of 1.4m and wave periods of 8.0s. The most comfortable wave conditions are in December 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 0.2mm of precipitation. For beginners, the best time to visit would be during December to February, 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 28, 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.
50 Dive sites near Sonic Boom Cave in
Matauri Bay
True Love Reef
Rainbow Warrior
The Sisters
Kariparapa Point
Putahataha Island
Motuwheteke Island
HMNZS Canterbury (Wreck)
White Reef
Sonic Boom Cave
Big Eyes Lair
Bowling Alley
Cathedral Cave
Piercys’ Backside
Key Hole
The Dog
Boulder Garden
The Nursery
Waiwiri Rock
Blue Maomao Arch (Bay of Islands)
Taupiri Bay
Whangamumu Reef
Pillar Rock
The Avenues
Hommer Reef
Giant Boarfish Cave
TUPAREHUIA - Waione
Joeys’ Maze
TUPAREHUIA - Parerangi
Danger Rock
HMNZS Waikato wreck
Northern Arch
Wild Beast Point
Cleanerfish Bay
Middle Arch
Barren Arch
Cave Bay
Landing Bay Pinnacle & Teravana Cave
Taravana Cave
Maomao Arch
Hope Point
Nursery Cove & The Labyrinth
Riko Riko cave
Oculina Point
Brady’s Corner (Shark Fin Cave)
The Gardens
Home Point
Matts Crack
Jan’s Tunnel
Magic Wall
Got feedback?
Help us improve this dive site by giving us feedback.