Halona Blowhole
A steep descent awaits divers at this dive site located near the parking lot. However, it is important to note that this site may not be suitable for diving when there is a large east swell. Divers should exercise caution when entering the water from the beach as it can be dangerous. Once underwater, divers will be greeted by a captivating current. The site is characterized by a combination of large boulders and slabs, offering generally good visibility. This challenging dive promises a variety of reef fish near the shore, with populations changing as divers approach deeper waters. The maximum depth near the shore is estimated to be around 45ft. This advanced-level dive is situated in the United States, specifically in Holona Beach Cove, Kalaniana’ole Highway, Lunalilo Park Mauka, Hawaii Kai, East Honolulu, Honolulu, Honolulu County, Hawaii.
Diving Conditions Score for Halona Blowhole
7.6
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Halona Blowhole
Depth
17m
Visibility
14m
Experience Level
advanced
Weather Conditions for Halona Blowhole
Wave Height
1.38m
Wind Speed
21 m/s
Water Temp
27.2°C
Visibility
41.74km
Cloud Cover
3%
Wave Period
10.2s
Air Temperature
26.7°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Halona Blowhole
Alpha
Dive Score Chart for Halona Blowhole
Best time to dive: 17:00 with score 7.42665527065527/10. Water conditions: Waves 1.28m, Wind 14.5 m/s.Best night dive time: 18:00 with score 7.008188603988604/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Halona Blowhole : 06:00
Sunset at Halona Blowhole : 18:00
Optimal diving conditions at Halona Blowhole 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
17:00Score: 7.4/10
Waves: 1.28m (11.7s), Wind: 14.5 m/s
Best Night
18:00Score: 7.0/10
Waves: 1.28m, Wind: 16.7 m/s
Seasonal Analysis for Halona Blowhole Alpha
Historical patterns and best seasons for diving at Halona Blowhole
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 Halona Blowhole
Winter
Avg. Score: 9.2/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Halona Blowhole
January
Score: 9.5
February
Score: 9.2
December
Score: 9.0
Ideal Conditions for Halona Blowhole
Water Temp
25.1°C / 77.2°F
August
Visibility
14.1m / 46.3ft
January
Wave Height
1.1m / 3.6ft
January
Wave Period
8.0s
January
Seasonal Insights for Halona Blowhole
Halona Blowhole shows typical northern hemisphere patterns with August being the warmest month (25.1°C) and January the coldest (19.1°C). The calmest conditions typically occur in January with average wave heights of 1.1m 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 0.3mm 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 20, 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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