Warm water holds less oxygen. In a heatwave, fish become sluggish in the middle of the day and are more easily stressed when caught. The fishing can still be great at dawn and dusk.
How fish react
Carp
Often sit near the surface in the heat — great for floaters and zigs.
Tench & bream
Feed best at first light and as the sun goes down.
All species
Vulnerable to stress — keep handling to a minimum.
Location
Look for oxygen: the windward end, inflows, aerators, weed beds and deeper water. Shade from trees is a magnet in the middle of the day.
Tactics
Surface fishing and zigs are the go-to for carp. For tench and bream, be set up before dawn. Avoid big beds of bait that can rot in warm water.
Fish care
Keep fish in the water, wet everything, skip long photos and never retain fish in keepnets or sacks in hot weather. Follow any venue heat rules.
FAQs
- Should I fish during a heatwave?
- Yes, but focus on early mornings and evenings and put fish care first.
Put it into practice
Check the 7-day forecast and see which venues have the weather edge for your fish.
Related guides
General advice from widely shared angling experience. Every water is different — it’s a steer, not a promise of fish.