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11 verified Brown trout catches are linked to River Usk. The forecast below uses this waterbody and current weather data.
Hourly activity and a seven-day calendar for Brown trout.
Friday, September 4
The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after.
Best time — 19:00–21:00 (dusk bite).
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
The water's turning murky — go with bright, noisy lures: spinner or small crankbait.
No special gear needed — seasonal clothing will do. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.
An average day — best chances during peak windows.
The computed water temperature is around 14 °C — inside the 6–17 °C comfort range for Brown trout, so baseline activity is high.
Brown trout works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.
Pressure is rising 8 hPa over the day — the bite usually settles down after a rise.
September is an active season for Brown trout here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +10°
The day is 4 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.
What are solunar periods?Recorded 11 catches here. Most commonly caught: Brown trout. Peak season: April–July.
BiteGuideFrom anglers’ reports
This is a summary of anglers' reports, not a proven cause of the bite: conditions lining up does not mean they drove it.
vertical axis — number of catches
| Value | Catches | Share |
|---|---|---|
| Apr | 8 | 44% |
| May | 2 | 11% |
| Jun | 3 | 17% |
| Jul | 3 | 17% |
| Aug | 1 | 6% |
| Sep | 1 | 6% |
River Usk (Powys) — a popular fishing spot. About 67 km long. Flows into Bristol Channel. Nearest town — Llanwrtyd Wells. Fish species: brown trout. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.