Carp Fishing Tips | Is a fresh low-pressure front really the best conditions to catch carp? - Simon Scott
This is a great question and one I’ve been asked before. The answer is closely linked to oxygen levels in the water.
In short, a big fresh low-pressure system which comes through during the summer, or winter for that matter, is often a trigger for enthusiastic feeding and high activity in fish stocks.
High winds will stir up the water column and lead to increased levels of oxygen in the water body which, in turn, switches the fish on to feeding.
If the low pressure leads to overcast or heavy grey skies and only light winds it’s less of a trigger for the fish to feed.
Bright sunshine can also trigger fish to feed because it can lead to increased levels of oxygen in the water. The sunlight drives the process of photosynthesis, so aquatic plants and algae produce more oxygen if the sun is shining brightly.