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Jaayson Neiuwkirk

Top Fly Patterns for Winter Fly Fishing: Essential Flies for Cold Weather Success

Winter fly fishing presents unique challenges, from colder water temperatures to more sluggish fish. But with the right fly patterns, you can adapt to these conditions and increase your chances of a successful outing. In winter, fish are often less active, so flies need to be realistic and subtle to entice them. Here are some of the best fly patterns to consider adding to your box this winter.



1. Zebra Midge

  • Description: The Zebra Midge is a small, simple fly that effectively imitates a midge pupa. Midges are one of the few insects active year-round, especially during winter when other hatches are sparse.

  • How to Fish It: Fish it under a small indicator or as a dropper fly below a heavier nymph. Dead-drift presentations are most effective.

  • Recommended Sizes: 16–22

  • Colors: Black, olive, red, and brown


2. Blue Wing Olive (BWO)

  • Description: Blue Wing Olives (BWOs) are small mayflies that hatch on overcast winter days, especially in late winter. They can be an excellent dry fly option for anglers when these hatches occur.

  • How to Fish It: Drift it naturally on the surface, especially during midday hatches. Look for rising fish in slower water.

  • Recommended Sizes: 18–24

  • Colors: Olive body with dun (grayish-blue) wings


3. San Juan Worm

  • Description: Although simple, the San Juan Worm is a reliable fly for winter fishing. During winter rains and melting snow, worms often get washed into rivers, making this fly an attractive option.

  • How to Fish It: Fish it deep under an indicator or paired with a smaller fly as a dropper. Vary the depth based on the river’s conditions.

  • Recommended Sizes: 12–16

  • Colors: Red, pink, brown, and tan


4. Prince Nymph

  • Description: The Prince Nymph is a tried-and-true pattern that imitates various nymphs, including stoneflies, mayflies, and caddisflies. Its beadhead version can also help get it deeper into the water column.

  • How to Fish It: Fish it as a lead fly in a two-fly setup. Its natural drifting motion can draw the attention of trout in colder, slower waters.

  • Recommended Sizes: 10–16

  • Colors: Peacock herl body with brown hackle and white wings


5. Egg Pattern

  • Description: During the winter, spawning fish leave behind eggs, providing an irresistible meal for opportunistic trout. Egg patterns mimic this readily available winter food source.

  • How to Fish It: Fish it below an indicator or as a dropper. Focus on fishing this fly in pools, runs, and tailouts where trout may congregate.

  • Recommended Sizes: 10–16

  • Colors: Orange, pink, chartreuse, and cream


6. WD-40

  • Description: The WD-40 is a small, versatile fly that imitates emerging midges and mayfly nymphs. It's particularly effective during the cold months when trout are feeding closer to the riverbed.

  • How to Fish It: Fish it as part of a two-nymph rig under an indicator, close to the bottom.

  • Recommended Sizes: 18–24

  • Colors: Olive, black, gray


7. RS2 (Rays of Sun)

  • Description: The RS2 is another small fly that effectively imitates a midge or BWO emerger, making it an ideal winter fly. Fish respond well to its natural look and size, especially in slow-moving waters.

  • How to Fish It: Fish this fly on the swing or dead drift as a trailing fly behind a nymph. It can also work as an emerger in light BWO hatches.

  • Recommended Sizes: 18–22

  • Colors: Gray, olive, black


8. Soft Hackle Hare’s Ear

  • Description: A twist on the classic Hare’s Ear, the soft hackle version brings added movement to the fly, which can be especially enticing in cold water where fish may be more selective.

  • How to Fish It: Fish it in a tandem rig or swing it through slow pools and tailouts where trout are more likely to be holding in winter.

  • Recommended Sizes: 12–16

  • Colors: Natural brown, olive, and gray


9. Midge Cluster

  • Description: A Midge Cluster imitates a group of midges. In winter, when midges hatch on warmer days, fish may rise to take clusters of these small insects.

  • How to Fish It: Fish it as a dry fly on the surface, ideally during a midge hatch when fish are visibly rising.

  • Recommended Sizes: 18–22

  • Colors: Black, gray, white


10. Pats Rubber Legs

  • Description: This fly imitates large stonefly nymphs and has rubber legs that provide movement. It’s highly effective for enticing sluggish trout out of deeper water.

  • How to Fish It: Fish it deep, either as a lead fly in a two-fly rig or alone. This fly excels in riffles, runs, and deeper sections of rivers.

  • Recommended Sizes: 8–12

  • Colors: Black, brown, and olive


Tips for Winter Fly Fishing Success

  1. Focus on Deep, Slow Water: In winter, trout tend to hold in deeper pools and slower runs where the water is warmer and more stable.

  2. Use Lighter Tippets: Clear, cold water often means more cautious fish. Using lighter tippets (5X or 6X) can help keep your flies looking natural.

  3. Slow Down Your Presentation: Fish are less active in cold water, so slowing down your presentation can make your flies more appealing.

  4. Stay Low and Stealthy: Clear water requires a stealthy approach. Avoid spooking fish by staying low and wading carefully.

  5. Keep Warm and Prepared: Winter fishing requires the right gear—dress in layers, bring hand warmers, and stay safe around icy banks and cold water.


Winter fly fishing can be challenging, but with these essential fly patterns and techniques, anglers can increase their chances of hooking fish. The Zebra Midge, BWO, San Juan Worm, and others are must-haves for your winter fly box. Embrace the season, enjoy the solitude of winter waters, and be prepared for the subtle yet rewarding take of a winter trout.

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