Most people pack up their rods when the snow starts falling — but December is actually one of the most peaceful and rewarding times to fish in Estes Park. With fewer anglers, crystal-clear water, and stable tailwater flows, winter offers a rare chance to experience the Big Thompson River in its quietest, most technical form. Trout become selective and hold in slower, deeper water, which means success comes from precision, patience, and subtle presentations. It’s not about covering miles of river — it’s about slowing down and fishing with intention.

Midday is the prime window in December as water temperatures rise a few degrees and trout become more active. Tiny midge patterns, soft hackles, and small mayfly nymphs fished close to the bottom are the most reliable producers. Light tippet, longer leaders, and careful wading make all the difference when fish are easily spooked in low, clear winter flows. While the action may be slower, every fish feels earned — and the reward is a quiet river, snowy canyon walls, and the kind of stillness you only find in winter.

For anglers willing to embrace the cold, December delivers a truly special fly fishing experience. It’s not about numbers — it’s about solitude, scenery, and connecting with wild trout in a season most people overlook