As autumn arrives, anglers near trout lakes face a unique challenge: how to continue enjoying fishing before the cold sets in. Mark, a recent retiree living near a trout lake in Cavendish, Vermont, reached out with this very concern. "Now that I am here in the fall, how can I continue to catch fish until it gets too cold?" he asked via the Ask MidCurrent platform.
Understanding trout behavior during this season is pivotal. As water temperatures begin to drop in late autumn, notable changes occur in trout activity. Early in the fall, the cooler water temperatures invigorate trout, prompting them to feed aggressively in anticipation of winter. For certain species, such as brown and brook trout, this period also coincides with fall spawning. "Many trout instinctively bulk up on food during this pre-winter period to build fat reserves," explained a fisheries expert.
As autumn progresses and temperatures fall into the chilly 40s Fahrenheit, trout experience a significant decrease in metabolism. Being cold-blooded, their energy levels diminish, resulting in less frequent feeding. "Trout won’t feed as often in near-freezing water and become far less aggressive than in warmer months," the expert noted.
With declining temperatures, the feeding patterns shift. Trout will not waste energy chasing fast-moving prey. Instead, they are more opportunistic, with the warmest parts of the day—typically late morning through mid-afternoon—becoming prime times for fishing. "On sunny days, the shallow bays or shorelines that get direct sunlight can warm slightly, prompting some insect activity and drawing trout to those sunlit shallows," said a local angler. Even a minor increase in temperature can greatly affect trout activity.
To effectively target trout as they adjust to the cooler conditions, anglers should modify their fly selections and presentations to align with the fish's appetites. As natural food sources dwindle, trout lean towards whatever small prey remains available. Commonly, nymph patterns prove to be especially productive during late fall. "Try small imitations like Zebra Midges, Pheasant Tail Nymphs, or Hare’s Ear Nymphs, which resemble the tiny midge larvae and other insects trout sip on through winter," recommended a seasoned fly-fisherman. Smaller sizes, between 18 and 24, tend to yield the best results.
Streamers can also entice trout looking for higher-calorie meals. Species such as young baitfish and active leeches are still present in many lakes late in the fall. A Woolly Bugger in black, olive, or brown can effectively trigger strikes. "A slow-moving streamer presented right in front of fish can trigger a reflex strike," added the expert, emphasizing the need for a deliberate approach.
In addition to nymphs and streamers, egg patterns shouldn't be overlooked. With brown and brook trout spawning during this time, trout around lakes often target stray eggs that drift by. "Drifting an egg pattern along the lake bottom or near creek inlets can hook fish opportunistically feeding," an expert suggested.
The way anglers present their flies in the cold water also plays a critical role. Trout tend to ignore rapidly stripped flies, so slowing down is essential. “Move the flies much more slowly than in summer, often with frequent pauses,” advised a fishing professional. For streamers, a steady strip with deliberate pauses to let the fly hover can prove effective.
Nymph fishing under indicators is another top tactic as water temperatures drop. Suspending one or two nymphs (or an egg fly) under a strike indicator allows for a more natural drift with the current. "The goal is to keep your nymph in the trout’s face as long as possible; in 40°F water, trout might barely move to grab a meal," highlighted a veteran angler. Getting your flies deep and maintaining their position is crucial. Using a longer leader or adding split shot can help reach the strike zone effectively.
For those aiming to catch larger trout or fish in deeper waters, employing a sinking or sink-tip fly line is recommended. Many trout may hold at depths between 15 to 25 feet in late fall. Anglers might adopt a countdown method to ensure their streamers present properly at the correct depths.
As the fall season progresses towards winter, strategies must evolve in response to trout behavior. By adjusting techniques, anglers can continue to find success in the colder months, making the most of the changing seasons.