We use cookies for analytics and advertising. Cookies necessary for the site to function are always kept. Learn more
Grayling lives in Gwynedd. Today's bite forecast, a day-by-day and hour-by-hour activity calendar, best time and baits.
Friday, September 4
The bite is strong — fish are active. A thunderstorm is possible: activity rises before the front and drops after.
Best time — 11:00–16:00 (daytime activity).
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
The water's turning murky — go with bright, noisy lures: fly or small spinner.
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.
Worth going — it's a productive day.
The computed water temperature is around 16 °C — inside the 6–18 °C comfort range for Grayling, so baseline activity is high.
Grayling feeds by day — between sunrise and sunset; their times are in the sun-and-moon card above.
Pressure is rising 9 hPa over the day — the bite usually settles down after a rise.
September is peak season for Grayling here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +13°
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?