GEM STONE BAY
Gemstone Bay is a captivating dive site nestled within the Hahei Marine Reserve in New Zealand. With its robust marine life, including sizable snapper and crayfish, Gemstone Bay offers a remarkable experience showcasing the benefits of a marine reserve.
One notable characteristic of this dive site is the abundance of snapper, cautioning divers to be mindful of what they wear. Anything shiny on your fingers may attract these vibrant creatures. With a maximum depth of 8m and visibility extending up to 6m, Gemstone Bay welcomes divers of all levels, making it an ideal destination for beginners.
Location: Gemstone Bay Track, Hahei, Thames-Coromandel District, Waikato, 3591, New Zealand.
One notable characteristic of this dive site is the abundance of snapper, cautioning divers to be mindful of what they wear. Anything shiny on your fingers may attract these vibrant creatures. With a maximum depth of 8m and visibility extending up to 6m, Gemstone Bay welcomes divers of all levels, making it an ideal destination for beginners.
Location: Gemstone Bay Track, Hahei, Thames-Coromandel District, Waikato, 3591, New Zealand.
Diving Conditions Score for GEM STONE BAY
4.5
Below AverageChallenging conditions, for experienced divers only.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for GEM STONE BAY
Depth
8m
Visibility
6m
Experience Level
beginner
Weather Conditions for GEM STONE BAY
Wave Height
1.12m
Wind Speed
23.9 m/s
Water Temp
16°C
Visibility
12.48km
Cloud Cover
55%
Wave Period
6.75s
Air Temperature
9.4°C
Precipitation
0.1 mm
Detailed 7-Day Diving Forecast for GEM STONE BAY
Alpha
Dive Score Chart for GEM STONE BAY
Best time to dive: 14:00 with score 6.251733333333333/10. Water conditions: Waves 1.08m, Wind 22.4 m/s.Best night dive time: 0:00 with score 6.065573375262055/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at GEM STONE BAY: 06:00
Sunset at GEM STONE BAY: 18:00
Optimal diving conditions at GEM STONE BAY 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
14:00Score: 6.3/10
Waves: 1.08m (6.75s), Wind: 22.4 m/s
Safest Overall
12:00Score: 6.2/10
Waves: 1.06m (6.85s), Wind: 25.6 m/s
Best Night
0:00Score: 6.1/10
Waves: 0.94m, Wind: 16.8 m/s
Seasonal Analysis for GEM STONE BAYAlpha
Historical patterns and best seasons for diving at GEM STONE BAY
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 GEM STONE BAY
Summer
Avg. Score: 7.9/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for GEM STONE BAY
July
Score: 7.9
August
Score: 7.9
June
Score: 7.8
Ideal Conditions for GEM STONE BAY
Water Temp
17.3°C / 63.1°F
February
Visibility
13.7m / 44.9ft
January
Wave Height
1.1m / 3.6ft
December
Wave Period
8.0s
January
Seasonal Insights for GEM STONE BAY
GEM STONE BAY follows southern hemisphere patterns with February being the warmest month (17.3°C) and September the coldest (10.8°C). The calmest conditions typically occur in December with average wave heights of 1.1m 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 0.1mm 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 - Jul 9, 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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