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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
Forecast
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United Kingdom / Denbighshire / River Dee

Bite forecast: River Dee

  • length 42 km
  • Flows into Dee Estuary
Loading map…

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    63/100high activity

    Cloudy: 10–17 °C

Loading map…

River Dee (Denbighshire) — a popular fishing spot. About 42 km long. Flows into Dee Estuary. The town of Ruthin is nearby. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

Catches

Recorded 13 catches here. Most commonly caught: Brown trout, Grayling, Atlantic salmon. Peak season: year-round.

  • Brown trout
    River Dee
    17 °C2 mph
    Jul 02, 2021, 1:15 AM
  • Grayling
    River Dee
    5 °C16 mph
    Feb 27, 2020, 5:05 PM
  • Grayling
    River Dee
    15 °C7 mph
    Sep 13, 2019, 5:38 PM
  • Brown trout
    River Dee
    20 °C9 mph
    Aug 04, 2019, 10:36 PM
  • Grayling
    River Dee
    4 °C4 mph
    Jan 09, 2019, 12:18 PM
  • Pike
    River Dee
    21 °C9 mph
    Jul 24, 2018, 4:13 PM
  • Atlantic salmon
    River Dee
    12 °C9 mph
    Oct 06, 2017, 5:34 PM
  • Atlantic salmon
    River Dee
    12 °C9 mph
    Oct 06, 2017, 1:20 PM
SundaySeptember 6weather-based forecast
61/100high activity

Partly cloudy: 16–20 °C

  • ThursdaySeptember 3weather-based forecast
    59/100medium activity

    Cloudy: 15–18 °C

  • Nearby towns

    • Ruthin9 mi

    Bite calendar

    7–Sep 13
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    European eelBarbelDaceGraylingPikeRuffeWhitefishWels catfishZanderAtlantic salmonBreamBrown troutPerchRainbow troutCarpIdeChubCrucian carpRoachBleakRuddTenchWhite bream

    Atlantic salmon

    7/10 · Good

    Hourly activity

    0:006:0012:0018:0023:00
    Bite activity:highmediumlow

    The bite is strong — fish are active. A thunderstorm is possible: activity rises before the front and drops after.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 20:00–21:00 (dusk bite).

    Tactics

    Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.

    Lures

    The water's turning murky — go with bright, noisy lures: salmon spoon or salmon fly.

    Gear

    Pack transitional-season clothing — mornings and evenings are chilly. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 14 °C — inside the 4–14 °C comfort range for Atlantic salmon, so baseline activity is high.

    Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C14 °C
    JFMAMJJASOND

    Atlantic salmon works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.

    The day: daylight hours and when Atlantic salmon feeds0:0012:0024:00

    Pressure is dropping 32 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 32 hPa change
    00:00 · 101723:00 · 985 hPa

    One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.

    Feeding windows on the day scale0:0012:0024:00

    September is an active season for Atlantic salmon here.

    JFMAMJJASOND

    These are the same values the bite curve above was computed from. How the forecast works

    8 SepTuesday, September 8
    +14°

    Cloudy · feels like +12°

    Low / high
    +10°…+17°
    Precipitation
    1.1 mm
    Wind
    9 mph SW
    Cloud cover
    98%
    Humidity
    78%
    Pressure
    1012 hPa
    00:00+13°—11 mphwest wind, 11 mph87%98%
    01:00+12°—11 mphwest wind, 11 mph86%95%
    02:00+12°—11 mphwest wind, 11 mph86%92%
    03:00+11°—11 mphwest wind, 11 mph85%87%
    04:00+11°—11 mphwest wind, 11 mph85%81%
    05:00+11°—11 mphwest wind, 11 mph84%77%
    06:00+10°—11 mphwest wind, 11 mph83%73%
    07:00+10°—11 mphwest wind, 11 mph81%72%
    08:00+11°—11 mphwest wind, 11 mph78%74%
    09:00+12°—11 mphwest wind, 11 mph74%79%
    10:00+13°—11 mphwest wind, 11 mph69%85%
    11:00+14°0.6 mm10 mphwest wind, 10 mph72%93%
    12:00+14°1.1 mm9 mphsouthwest wind, 9 mph78%98%
    13:00+14°1.7 mm9 mphsouth wind, 9 mph86%100%
    14:00+15°2.1 mm8 mphsoutheast wind, 8 mph96%100%
    15:00+15°2.1 mm9 mphsouth wind, 9 mph96%100%
    16:00+16°2.1 mm11 mphsouth wind, 11 mph96%100%
    17:00+16°2.1 mm14 mphsouthwest wind, 14 mph96%100%
    18:00+17°2.1 mm16 mphsouthwest wind, 16 mph96%100%
    19:00+17°2.1 mm17 mphsouthwest wind, 17 mph96%100%
    20:00+17°0.1 mm17 mphsouthwest wind, 17 mph96%98%
    21:00+16°0.1 mm14 mphsouthwest wind, 14 mph97%94%
    22:00+16°0.1 mm12 mphsouthwest wind, 12 mph97%90%
    23:00+15°0.1 mm8 mphsouthwest wind, 8 mph97%86%
    +17°+14°+10°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Tuesday, September 8
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:35
    Sunset
    19:46
    Day length
    13 h 11 min
    Sunshine hours
    0 min
    UV index
    4
    moderate
    Moon
    Waning crescent
    Moonrise
    02:33
    Moonset
    18:50

    The day is 4 min shorter than yesterday.

    Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

    Solunar feeding periods

    +16% in the windowTuesday, September 8
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor02:03–03:03Moonrise
    • Major09:54–11:54Moon overhead
    • Minor18:20–19:20Moonset
    • Major22:21–00:00Moon underfoot

    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?

    Nearby rivers

    • Afon Trystion3 mi
    • Afon Ro4 mi
    • Afon Alwen5 mi
    • Afon Llynor5 mi
    • River Ceiriog7 mi
    • Afon Ceidiog7 mi
    • River Clwyd8 mi
    • Afon Iwrch8 mi
    • Afon Caletwr9 mi
    • Afon Clywedog9 mi

    Nearby water bodies

    • LakeLlyn Oror3 mi
    • LakeLlyn Mynyllod6 mi
    • LakeLlyn Lluncaws7 mi
    • LakeLlyn Caer Euni8 mi
    • LakeLlyn Gweryd8 mi
    • LakeLlyn Maes-y-clawdd9 mi

    BiteGuide·From anglers’ reports

    What actually worked on this water

    Based on 13 verified catchesPeriod: 2014–2021

    This is a summary of anglers' reports, not a proven cause of the bite: conditions lining up does not mean they drove it.

    By fish species

    vertical axis — number of catches

    036
    6331
    Brown troutAtlantic salmonGraylingPike
    By fish species
    ValueCatchesShare
    Brown trout646%
    Atlantic salmon323%
    Grayling323%
    Pike18%

    By month

    vertical axis — number of catches

    035
    1115212
    JanFebMarJulAugSepOct
    By month
    ValueCatchesShare
    Jan18%
    Feb18%
    Mar18%
    Jul538%
    Aug215%
    Sep18%
    Oct215%

    By time of day

    12 catches have this data · vertical axis — number of catches

    012
    112112211
    1212141517182123
    By time of day
    ValueCatchesShare
    01:0018%
    02:0018%
    12:00217%
    14:0018%
    15:0018%
    17:00217%
    18:00217%
    21:0018%
    23:0018%

    Air temperature, °C

    vertical axis — number of catches

    035
    12253
    05101520
    Air temperature, °C
    ValueCatchesShare
    0–4 °C18%
    5–9 °C215%
    10–14 °C215%
    15–19 °C538%
    20–24 °C323%

    Pressure, mmHg

    vertical axis — number of catches

    023
    1123231
    735740745750755760765
    Pressure, mmHg
    ValueCatchesShare
    735–739 mmHg18%
    740–744 mmHg18%
    745–749 mmHg215%
    750–754 mmHg323%
    755–759 mmHg215%
    760–764 mmHg323%
    765–769 mmHg18%

    Wind direction

    vertical axis — number of catches

    036
    11164
    NESESSWNW
    Wind direction
    ValueCatchesShare
    NE18%
    SE18%
    S18%
    SW646%
    NW431%

    Wind speed, mph

    vertical axis — number of catches

    047
    1372
    04913
    Wind speed, mph
    ValueCatchesShare
    0–2 mph18%
    4–7 mph323%
    9–11 mph754%
    13–16 mph215%