この記事は英語版のみです。
Trout fishing in winter made simple: the best time of day, water temperatures, midges and nymphs, baits and lures, tailwaters and spring creeks, plus safety on cold rivers.
Winter is the quietest season on a trout stream, and that's half the appeal: empty parking lots, no hatchery crowds and trout that will still feed if you slow down. Trout are cold-water fish. They don't stop eating in winter, they just eat smaller, slower and at different hours. Here's how to catch them from December to March.
Trout are most active at roughly 50–60°F. As water drops toward the 30s, their metabolism slows down:
| Water temperature | Trout behavior |
|---|---|
| Above 45°F | Feeding regularly; nymphs and small streamers work |
| 38–45°F | Slower; feeding windows shorten to the warmest hours |
| Below 38°F | Sluggish; fish hold deep and slow, eat only easy food that drifts close |
A cheap stream thermometer will tell you more than any fly box. Even a two-degree rise in the afternoon can switch fish on.
Forget dawn. In winter, the best window is usually late morning to mid-afternoon, roughly 11 a.m. to 3 p.m., when the sun has warmed the water a little. Sunny days after a cold snap, and mild, overcast days with a light drizzle, are both good. The first warm days of a thaw can bring a midge hatch and rising fish. See best time to fish for trout for the full-year picture.
Fish won't move far to eat, so cover the water thoroughly: many drifts through the same seam.
Tailwaters and spring creeks stay at stable temperatures all year and fish best in winter:
Seasons and rules vary: some streams are catch-and-release only in winter.
Tight-line or indicator nymphing with lighter tippet (5X–6X) is the most productive method. More technique in fly fishing for trout.
If you spin-fish, slow down:
Baits that work all year are in best bait for trout.
In winter, water temperature and sun matter more than moon phase. Still, many anglers plan around a solunar period falling in the warm midday window: when the two overlap, it's the time to be on the best run. Read how to read solunar tables.
Solunar shows sunrise, sunset, moon phase and solunar windows on a 24-hour dial with a 1–4 star day rating, for your exact stream and offline (handy in canyons with no signal). In winter, look for good ratings with a window between late morning and afternoon.