We’ve covered lakes with surface water temperature, derived from satellite data and models.
Some anglers use water temperature to find fish and to judge how active they are.
Every species has its own comfortable range. When water is too cold or too warm, the bite usually drops off.
Fish move between shallows and deep water, looking for the temperature and oxygen that suit them.
Temperature thresholds trigger spawning and the movements that come with it.
Cold water usually calls for a slow presentation. In warm water, active fish may react better to a fast one.
Edges between water of different temperature, warmed-up bays, river mouths and areas stirred up by wind can all concentrate fish.