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© 2026·AI-powered bite forecast
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United Kingdom / Argyll and Bute / River Luss Water

Bite forecast: River Luss Water

  • length 9 km
  • Flows into Loch Lomond
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Best fishing days for the next week

  1. MondaySeptember 7weather-based forecast
    62/100high activity

    Cloudy: 14–16 °C

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River Luss Water (Argyll and Bute) — a popular fishing spot. About 9 km long. Flows into Loch Lomond. The town of Helensburgh is nearby. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

SaturdaySeptember 12weather-based forecast
62/100high activity

Cloudy: 11–14 °C

  • ThursdaySeptember 10weather-based forecast
    60/100high activity

    Drizzle: 13–16 °C

  • Nearby towns

    • Helensburgh7 mi

    Bite calendar

    Sunday, September 6

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    DaceEuropean eelGraylingBarbelPikeRuffeWhitefishZanderBreamCarpWels catfishPerchAtlantic salmonBrown troutRainbow troutCrucian carpIdeRoachBleakChubRuddTenchWhite bream

    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 19:00–22:00 (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 15 °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 °C15 °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 10 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 10 hPa change
    00:00 · 102023:00 · 1010 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

    6 SepSunday, September 6
    +17°

    Cloudy · feels like +15°

    Low / high
    +15°…+18°
    Precipitation
    0.0 mm
    Wind
    15 mph SSE
    Cloud cover
    100%
    Humidity
    89%
    Pressure
    1012 hPa
    00:00+15°—8 mphsoutheast wind, 8 mph83%100%
    01:00+15°—6 mphsoutheast wind, 6 mph83%100%
    02:00+15°0.1 mm10 mphsoutheast wind, 10 mph81%100%
    03:00+15°0.2 mm12 mphsoutheast wind, 12 mph87%100%
    04:00+15°0.4 mm10 mphsoutheast wind, 10 mph88%100%
    05:00+15°0.1 mm10 mphsoutheast wind, 10 mph89%100%
    06:00+15°1.6 mm12 mphsouth wind, 12 mph95%100%
    07:00+16°—12 mphsouth wind, 12 mph95%100%
    08:00+16°—11 mphsoutheast wind, 11 mph96%100%
    09:00+16°—11 mphsoutheast wind, 11 mph95%100%
    10:00+17°—13 mphsouth wind, 13 mph93%100%
    11:00+17°—16 mphsouth wind, 16 mph92%100%
    12:00+17°—15 mphsouth wind, 15 mph89%100%
    13:00+18°—17 mphsouth wind, 17 mph84%100%
    14:00+18°—17 mphsouth wind, 17 mph80%100%
    15:00+17°—17 mphsouth wind, 17 mph80%100%
    16:00+16°1.1 mm14 mphsoutheast wind, 14 mph90%100%
    17:00+17°0.2 mm16 mphsouth wind, 16 mph88%90%
    18:00+17°—17 mphsouth wind, 17 mph87%94%
    19:00+17°—17 mphsouth wind, 17 mph89%99%
    20:00+17°0.2 mm15 mphsouth wind, 15 mph93%95%
    21:00+17°0.4 mm9 mphsouthwest wind, 9 mph94%100%
    22:00+16°0.2 mm5 mphsouthwest wind, 5 mph90%100%
    23:00+15°—6 mphsouthwest wind, 6 mph87%100%
    +18°+16°+15°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Sunday, September 6
    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
    20:02
    Day length
    13 h 27 min
    Sunshine hours
    40 min
    UV index
    1
    low
    Moon
    Waning crescent
    Moonrise
    —
    Moonset
    18:32

    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

    +12% in the windowSunday, September 6
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major08:04–10:04Moon overhead
    • Minor18:02–19:02Moonset
    • Major20:35–22:35Moon 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?

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