Ah Long Rock
Divers visiting Ah Long Rock can expect a diverse array of marine life, including stingrays, nudibranchs, and shrimps. Macro enthusiasts will be thrilled by the opportunity to spot boxing shrimps, as this is one of the prime locations for encountering them.
With a visibility of around 7 meters and a maximum depth of 17 meters, Ah Long Rock accommodates both beginners and advanced divers. Its versatility makes it a popular choice for divers of all skill levels.
Diving Conditions Score for Ah Long Rock
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Ah Long Rock
Depth
17m
Visibility
7m
Experience Level
Weather Conditions for Ah Long Rock
Wave Height
1m
Wind Speed
10 m/s
Water Temp
18°C
Visibility
15km
Cloud Cover
57.5%
Wave Period
8s
Air Temperature
20°C
Precipitation
0 mm
Dive Score Chart for Ah Long Rock
Best time to dive: 6:00 with score 7.113333333333333/10. Water conditions: Waves 1m, Wind 10 m/s.Best night dive time: 0:00 with score 6.613333333333333/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Ah Long Rock 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.
Score: 7.1/10
Waves: 1m (8s), Wind: 10 m/s
Score: 6.6/10
Waves: 1m, Wind: 10 m/s
Seasonal Analysis for Ah Long RockAlpha
Historical patterns and best seasons for diving at Ah Long Rock
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 Ah Long Rock
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Ah Long Rock
Ideal Conditions for Ah Long Rock
Water Temp
26.8°C / 80.2°F
May
Visibility
11.6m / 38.1ft
July
Wave Height
0.9m / 3.0ft
March
Wave Period
8.0s
January
Seasonal Insights for Ah Long Rock
Ah Long Rock shows typical northern hemisphere patterns with May being the warmest month (26.8°C) and December the coldest (21.4°C). The calmest conditions typically occur in March with average wave heights of 0.9m and wave periods of 8.0s. The most comfortable wave conditions are in March 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). July is usually the driest month with 3.4mm of precipitation. For beginners, the best time to visit would be during March to May, 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 22, 2026