Look for floating debris, weed lines, and color changes within the preferred SST band. Frigatebirds working over the water often mark mahi feeding below. SST threshold pages cover the species-specific temperature ranges; migration calendar pages cover seasonal availability.
SST & Offshore Fishing
What water temperature do mahi-mahi prefer?
Mahi-mahi prefer water temperatures of 75-82°F, with peak activity in the 78-80°F range. They tolerate down to about 70°F and up to 86°F but feeding shuts down outside the core range. Find a temperature break where 78°F water meets 75°F water and mahi will be there.
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