HOME BAY - GMI
The western side of Great Mercury Island in New Zealand is a safe and convenient spot for boats to anchor and stay overnight. However, the scallop beds in this area are currently closed until at least 2023 due to their poor condition.
The dive site features a sandy bottom on the scallop field, with large patches of sea grass. One popular attraction is "The Sisters," a two-part broken reef that is commonly frequented by spearfishing enthusiasts.
With a maximum depth of 15m and visibility of 8m, this site is suitable for divers of beginner and advanced levels. Located near Waikato, New Zealand, it offers an exciting diving experience for enthusiasts in the country.
The dive site features a sandy bottom on the scallop field, with large patches of sea grass. One popular attraction is "The Sisters," a two-part broken reef that is commonly frequented by spearfishing enthusiasts.
With a maximum depth of 15m and visibility of 8m, this site is suitable for divers of beginner and advanced levels. Located near Waikato, New Zealand, it offers an exciting diving experience for enthusiasts in the country.
Diving Conditions Score for HOME BAY - GMI
5.4
AverageAverage conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for HOME BAY - GMI
Depth
15m
Visibility
8m
Experience Level
beginner
advanced
Weather Conditions for HOME BAY - GMI
Wave Height
0.46m
Wind Speed
16.4 m/s
Water Temp
16.6°C
Visibility
47.9km
Cloud Cover
94%
Wave Period
9.35s
Air Temperature
14.1°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for HOME BAY - GMI
Alpha
Dive Score Chart for HOME BAY - GMI
Best time to dive: 13:00 with score 7.765305394990367/10. Water conditions: Waves 0.46m, Wind 5.6 m/s.Best night dive time: 22:00 with score 7.121084229390681/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at HOME BAY - GMI: 06:00
Sunset at HOME BAY - GMI: 18:00
Optimal diving conditions at HOME 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
13:00Score: 7.8/10
Waves: 0.46m (8.65s), Wind: 5.6 m/s
Best Night
22:00Score: 7.1/10
Waves: 0.46m, Wind: 16.4 m/s
Seasonal Analysis for HOME BAY - GMIAlpha
Historical patterns and best seasons for diving at HOME 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 HOME 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 HOME BAY - GMI
July
Score: 8.0
June
Score: 7.8
August
Score: 7.8
Ideal Conditions for HOME 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 HOME BAY - GMI
HOME 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 - Jun 17, 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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