Hawaii Water Temperatures
Current lake & river temperatures in Hawaii — updated daily from USGS sensors.
Hawaii — Ranked by Temperature
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❓ Hawaii Water Temperature FAQ
What is the warmest lake in Hawaii today?
Based on our latest USGS data, Kaneohe Str Blw Kamehameha Hwy, Oahu, Hi is currently the warmest water body in Hawaii at 80.1°F.
Which Hawaii lakes are good for swimming right now?
Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Hawaii's average water temperature is 67.4°F — check individual lakes above for specific conditions.
What is the best water temperature for fishing in Hawaii?
The optimal temperature range depends on your target species. For bass fishing, look for water bodies between 65–75°F. For trout, target the coldest water bodies in Hawaii — typically 50–65°F. Use the table above to identify which lakes are in the ideal range for your target species.
🔬 Data Methodology & Sources
Water temperature readings on this site are collected from USGS (United States Geological Survey) monitoring stations installed at lakes, rivers, and reservoirs across the country. Sensors measure water surface temperature in Celsius, which is converted to Fahrenheit for display. Data is retrieved and stored daily. Temperatures shown reflect the most recent available sensor reading for each water body, typically from the past 1–30 days depending on station reporting frequency.
⚠️ Water temperatures can vary significantly across a water body due to depth, currents, and time of day. Sensor readings represent conditions at the monitoring station location. Always exercise caution when swimming and consult local authorities for official safety advisories.