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Forecast
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© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United Kingdom / Dorset / River Allen

Bite forecast: River Allen

  • length 22 km
  • Flows into River Stour, English Channel basin
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Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    56/100medium activity

    Drizzle: 15–17 °C

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River Allen (Dorset) — a popular fishing spot. About 22 km long. Flows into River Stour, English Channel basin. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

Catches

Recorded 21 catches here. Most commonly caught: Brown trout, Atlantic salmon. Peak season: year-round.

  • Brown trout — River Allen, Dec 21, 2025, 12:01 PM
    Brown trout
    River Allen
    10 °C9 mph
    Dec 21, 2025, 12:01 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 6:19 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 5:56 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 5:27 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 5:01 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 4:43 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 3:50 PM
  • Brown trout
    River Allen
    13 °C13 mph
    Apr 19, 2025, 3:45 PM
WednesdaySeptember 2weather-based forecast
54/100medium activity

Cloudy: 16–20 °C

  • SundaySeptember 6weather-based forecast
    54/100medium activity

    Partly cloudy: 15–21 °C

  • Bite calendar

    Wednesday, September 2

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    DaceEuropean eelGraylingPikeBarbelRuffeZanderPerchWhitefishAtlantic salmonBreamCarpRainbow troutBrown troutWels catfishIdeRoachBleakChubCrucian carpWhite breamRuddTench

    Atlantic salmon

    6/10 · Fair

    Hourly activity

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

    The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (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

    No special gear needed — seasonal clothing will do. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 17 °C — warmer than the 4–14 °C comfort range for Atlantic salmon: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C17 °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 2 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 2 hPa change
    00:00 · 102123:00 · 1019 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

    2 SepWednesday, September 2
    +19°

    Cloudy · feels like +16°

    Low / high
    +15°…+20°
    Precipitation
    0.0 mm
    Wind
    17 mph SW
    Cloud cover
    91%
    Humidity
    78%
    Pressure
    1020 hPa
    00:00+16°—3 mphsouthwest wind, 3 mph88%100%
    01:00+16°—5 mphwest wind, 5 mph87%96%
    02:00+15°—5 mphsouthwest wind, 5 mph91%41%
    03:00+15°—3 mphsouthwest wind, 3 mph92%95%
    04:00+15°—4 mphsouth wind, 4 mph93%96%
    05:00+16°—6 mphsouthwest wind, 6 mph93%62%
    06:00+16°—5 mphsouthwest wind, 5 mph93%98%
    07:00+16°—8 mphsouthwest wind, 8 mph93%99%
    08:00+17°—10 mphsouthwest wind, 10 mph89%89%
    09:00+17°—11 mphsouthwest wind, 11 mph85%98%
    10:00+18°—17 mphsouthwest wind, 17 mph79%70%
    11:00+19°—16 mphsouthwest wind, 16 mph79%95%
    12:00+19°—17 mphsouthwest wind, 17 mph78%91%
    13:00+19°—20 mphsouthwest wind, 20 mph80%100%
    14:00+18°—18 mphsouthwest wind, 18 mph86%100%
    15:00+18°0.1 mm17 mphsouthwest wind, 17 mph89%100%
    16:00+20°—18 mphsouthwest wind, 18 mph83%66%
    17:00+19°—18 mphsouthwest wind, 18 mph83%73%
    18:00+19°—17 mphsouthwest wind, 17 mph84%53%
    19:00+19°—14 mphsouthwest wind, 14 mph87%91%
    20:00+18°—12 mphsouthwest wind, 12 mph91%97%
    21:00+18°—12 mphwest wind, 12 mph90%81%
    22:00+18°—10 mphwest wind, 10 mph91%80%
    23:00+18°—9 mphsouthwest wind, 9 mph92%66%
    +20°+17°+15°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Wednesday, September 2
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:24
    Sunset
    19:52
    Day length
    13 h 28 min
    Sunshine hours
    5 h 12 min
    UV index
    3
    moderate
    Moon
    Waning gibbous
    Moonrise
    21:22
    Moonset
    13:05

    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

    +13% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major03:52–05:52Moon overhead
    • Minor12:35–13:35Moonset
    • Major16:19–18:19Moon underfoot
    • Minor20:52–21:52Moonrise

    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

    • River Crane6 mi
    • Moors River8 mi
    • Sherford River8 mi
    • Turmer Brook9 mi

    Nearby water bodies

    • LakeCrichel Lake2 mi
    • LakeDorset Springs4 mi
    • LakeMerley Pond4 mi
    • ReservoirLongham Lakes6 mi
    • LakeCreekmoor Lakes7 mi
    • LakeHatch Pond7 mi
    • LakeHamworthy Lake9 mi
    • PondHigher Pond9 mi
    • LakePoole Park Boating Lake9 mi
    • LakeLower Pond9 mi

    Measured river conditions are available for River Allen: current gauge height, streamflow, and water temperature when reported by the source.

    Water

    Streamflow
    0.1 m³/s

    Environment Agency gauge River Allen at Loverley Farm, 2 mi away · measured 2026-09-02 09:45 · data source · provisional data, subject to revision

    BiteGuide·From anglers’ reports

    What actually worked on this water

    Based on 21 verified catchesPeriod: 2024–2025

    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

    01019
    192
    Brown troutAtlantic salmon
    By fish species
    ValueCatchesShare
    Brown trout1990%
    Atlantic salmon210%

    By month

    vertical axis — number of catches

    047
    42771
    JanMarAprOctDec
    By month
    ValueCatchesShare
    Jan419%
    Mar210%
    Apr733%
    Oct733%
    Dec15%

    By time of day

    vertical axis — number of catches

    023
    11333212131
    89101213141516171819
    By time of day
    ValueCatchesShare
    08:0015%
    09:0015%
    10:00314%
    12:00314%
    13:00314%
    14:00210%
    15:0015%
    16:00210%
    17:0015%
    18:00314%
    19:0015%

    Air temperature, °C

    vertical axis — number of catches

    059
    696
    51015
    Air temperature, °C
    ValueCatchesShare
    5–9 °C629%
    10–14 °C943%
    15–19 °C629%

    Pressure, mmHg

    vertical axis — number of catches

    0612
    12612
    750755760770
    Pressure, mmHg
    ValueCatchesShare
    750–754 mmHg1257%
    755–759 mmHg629%
    760–764 mmHg15%
    770–774 mmHg210%

    Wind direction

    vertical axis — number of catches

    059
    2964
    NEESSW
    Wind direction
    ValueCatchesShare
    NE210%
    E943%
    S629%
    SW419%

    Wind speed, mph

    vertical axis — number of catches

    0713
    52113
    04913
    Wind speed, mph
    ValueCatchesShare
    0–2 mph524%
    4–7 mph210%
    9–11 mph15%
    13–16 mph1362%