CORALIE BAY - GMI
Located on the eastern side of the Great Mercury Islands, this dive site offers a fantastic opportunity for beginners to explore the underwater world. With its easy diving conditions and a maximum depth of 15m, it is perfect for those starting their diving journey. The middle of the bay boasts an impressive kelpy reef system, providing a diverse and captivating experience for divers. The standard kelpy rocky bottom, adorned with patches of white sand, creates a picturesque backdrop for underwater exploration. Expect to encounter a wide array of marine life, including fish, crayfish, rays, and even orcas. The visibility at this dive site is around 7m, allowing divers to fully immerse themselves in the beauty of the underwater landscape. Located in New Zealand's Waikato region, this dive site is a must-visit for both local and international divers.
Diving Conditions Score for CORALIE BAY - GMI
6
Above AverageDecent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for CORALIE BAY - GMI
Depth
15m
Visibility
7m
Experience Level
beginner
Weather Conditions for CORALIE BAY - GMI
Wave Height
0.6m
Wind Speed
8 m/s
Water Temp
17.4°C
Visibility
40.5km
Cloud Cover
20%
Wave Period
8.35s
Air Temperature
13.8°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for CORALIE BAY - GMI
Alpha
Dive Score Chart for CORALIE BAY - GMI
Best time to dive: 10:00 with score 7.7283/10. Water conditions: Waves 0.68m, Wind 13.7 m/s.Best night dive time: 5:00 with score 7.02365785440613/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at CORALIE BAY - GMI: 06:00
Sunset at CORALIE BAY - GMI: 18:00
Optimal diving conditions at CORALIE BAY - GMI 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
10:00Score: 7.7/10
Waves: 0.68m (8.5s), Wind: 13.7 m/s
Best Night
5:00Score: 7.0/10
Waves: 0.76m, Wind: 16.1 m/s
Seasonal Analysis for CORALIE BAY - GMIAlpha
Historical patterns and best seasons for diving at CORALIE BAY - GMI
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 CORALIE BAY - GMI
Summer
Avg. Score: 7.9/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for CORALIE BAY - GMI
July
Score: 8.0
June
Score: 7.8
August
Score: 7.8
Ideal Conditions for CORALIE BAY - GMI
Water Temp
18.3°C / 64.9°F
March
Visibility
11.9m / 39.0ft
May
Wave Height
1.8m / 5.9ft
December
Wave Period
8.0s
January
Seasonal Insights for CORALIE BAY - GMI
CORALIE BAY - GMI follows southern hemisphere patterns with March being the warmest month (18.3°C) and October the coldest (12.2°C). The calmest conditions typically occur in December with average wave heights of 1.8m 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 0.0mm 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 - May 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.
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