Big Island Sea Temperature
USA · Forecast updated Jul 16, 2026, 05:05 UTC
Sea Surface Temperature Over the Year
About the water at Big Island
Big Island snorkel report hub for Kona reefs, protected bays and lava-rock entries.
- Area
- Hawaii Island
- Local timing
- Morning
- Exposure
- Kona coast is often calmer; east side is windier
- Entry type
- Island hub
- Difficulty
- Varies by beach
Big Island Water Temperature — Common Questions
What is the sea temperature in Big Island today?
When is the water warmest in Big Island?
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Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Big Island.
View Snorkel Forecast →