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© 2026·AI-powered bite forecast
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United Kingdom / Clackmannanshire / River Black Devon

Bite forecast: River Black Devon

  • length 14 km
  • Flows into River Forth
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Best fishing days for the next week

  1. FridaySeptember 11weather-based forecast
    66/100high activity

    Drizzle: 13–17 °C

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River Black Devon (Clackmannanshire) — one of the area's fishing spots. About 14 km long. Flows into River Forth. Nearby towns: Clackmannan, Alloa and Tillicoultry. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.

ThursdaySeptember 10weather-based forecast
62/100high activity

Drizzle: 8–14 °C

  • MondaySeptember 7weather-based forecast
    61/100high activity

    Partly cloudy: 13–15 °C

  • Nearby towns

    • Clackmannan0.2 mi
    • Alloa0.8 mi
    • Tillicoultry2 mi

    Bite calendar

    Saturday, September 5

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    DaceEuropean eelGraylingWhitefishBarbelPikeRuffeZanderAtlantic salmonBreamCarpWels catfishPerchRainbow troutBrown troutIdeBleakChubCrucian carpRoachWhite breamRuddTench

    Atlantic salmon

    6/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. Pressure is rising — activity tends to be more subdued.

    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. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    An average day — best chances during peak windows.

    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 rising 13 hPa over the day — the bite usually settles down after a rise.

    Pressure through the day, 13 hPa change
    00:00 · 101023:00 · 1022 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

    5 SepSaturday, September 5
    +15°

    Cloudy · feels like +12°

    Low / high
    +11°…+16°
    Precipitation
    0.0 mm
    Wind
    11 mph W
    Cloud cover
    84%
    Humidity
    68%
    Pressure
    1019 hPa
    00:00+13°—14 mphwest wind, 14 mph81%95%
    01:00+12°—13 mphwest wind, 13 mph80%55%
    02:00+12°0.1 mm9 mphwest wind, 9 mph86%86%
    03:00+12°—7 mphsouthwest wind, 7 mph82%94%
    04:00+12°—10 mphsouthwest wind, 10 mph80%99%
    05:00+11°—10 mphsouthwest wind, 10 mph80%62%
    06:00+11°—10 mphsouthwest wind, 10 mph75%53%
    07:00+11°—6 mphsouthwest wind, 6 mph77%8%
    08:00+12°—8 mphwest wind, 8 mph78%58%
    09:00+14°—13 mphwest wind, 13 mph70%48%
    10:00+14°—13 mphwest wind, 13 mph66%59%
    11:00+15°—13 mphwest wind, 13 mph64%95%
    12:00+15°—11 mphwest wind, 11 mph68%84%
    13:00+16°—13 mphwest wind, 13 mph64%88%
    14:00+16°—13 mphwest wind, 13 mph64%88%
    15:00+16°—15 mphwest wind, 15 mph59%87%
    16:00+15°—13 mphwest wind, 13 mph66%100%
    17:00+16°—11 mphwest wind, 11 mph66%97%
    18:00+15°—7 mphwest wind, 7 mph71%100%
    19:00+15°—6 mphwest wind, 6 mph75%52%
    20:00+13°—5 mphwest wind, 5 mph74%100%
    21:00+13°—5 mphwest wind, 5 mph74%100%
    22:00+13°—2 mphsouthwest wind, 2 mph85%100%
    23:00+12°—0 mpheast wind, 0 mph92%100%
    +16°+14°+11°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Saturday, September 5
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:26
    Sunset
    19:59
    Day length
    13 h 33 min
    Sunshine hours
    6 h 7 min
    UV index
    2
    low
    Moon
    Waning crescent
    Moonrise
    23:13
    Moonset
    17:47

    The day is 5 min shorter than yesterday.

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

    Solunar feeding periods

    +15% in the windowSaturday, September 5
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major06:57–08:57Moon overhead
    • Minor17:17–18:17Moonset
    • Major19:29–21:29Moon underfoot
    • Minor22:43–23:43Moonrise

    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 Forth2 mi
    • River Devon3 mi
    • Tillicoultry Burn3 mi
    • Black Devon3 mi
    • cooling channel5 mi
    • Menstrie Burn5 mi
    • Loss Burn6 mi
    • Bluther Burn6 mi

    Nearby water bodies

    • LakeGartmorn Dam1 mi
    • LakePeppermill Dam3 mi
    • LakeFishery3 mi
    • LakeMoor Loch3 mi
    • LakeKeir Dam4 mi
    • LakeLoch Kinneddar5 mi
    • ReservoirLossburn Reservoir7 mi