Spearfishing in Maui
Live conditions, water-clarity forecast, and bite-window timing for spearfishing in Maui, HI. Open the app for a live verdict, tappable factor breakdown, and a 10-day forecast — free, no signup needed.
About Maui
Molokini Crater diving, Honolua Bay on calm days, plus bluewater trips between the islands. Winter humpback whale migration routes overlap fishing grounds.
Notable species
Maui is known for:
Typical water visibility
Summer visibility in Maui typically ranges from 40–100 feet, depending on recent rain, river discharge, and swell mixing. Winter and post-storm windows can drop this significantly. Submarius's water-clarity forecast blends satellite turbidity (NOAA CoastWatch Kd490), river-plume detection, wave-mixing models, and community post-dive reports to predict how far you'll actually see on a given day — not just the summer average.
How the clarity forecast works →What Submarius shows for Maui
- Verdict score (0–10). Aggregates wind, swell, tide, moon, and water clarity into one decisive number.
- Best window. The 2–3 hour stretch each day when conditions peak.
- 10-day forecast. Auto-scaled line graph showing which day this week is trending good.
- Bite score. Tide stage, moon phase, solunar windows, and pressure trend combined into a 0–10 predictor.
- Water clarity forecast. Secchi-depth estimate with uncertainty bounds and the next best viz window.
- Free, anonymous. Check conditions with location on — no signup until you want to save spots or post reports.
Safety in the water
Submarius ships OCEARCH tagged-shark alerts, community shark sightings, SOS, and buddy GPS sharing — permanently free, regardless of subscription tier. For Maui specifically, the app shows any recent tagged sharks within range and lets you enable push notifications for sightings on your active tiles.