Over the years ive heard quite a lot of people say that the fishing is good when air pressure is rising and not so good when air pressure is falling. I personally have cought fish in both rising and falling air pressure and havent noticed any difference I cought one of my biggest Trout when the air pressure had fallen over 20mb in 30 hours. Anyone else got had any experance of air pressure affecting fishing?
I think a steady or rising barometre will give you the best fishing especially if they have to chase or find what you are offering
but a Trout sitting behind a rock will take a nymph going past anytime. The hardest time to catch fish for me is the week after the full moon thats when ill go and shoot something instead.
Low air pressure would generally increase spring flow, which would in turn increase the current and cool the water. Wither it has a impact on trout I do not know.