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© 2026·AI-powered bite forecast
0.1.0+2163 · 92c14a40

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United Kingdom / Cornwall / River Deer

Bite forecast: River Deer

  • length 1 km
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Best fishing days for the next week

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

    Partly cloudy: 14–17 °C

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River Deer (Cornwall) — a popular fishing spot. About 1 km long. Close by — Launceston and Bude. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

SundaySeptember 6weather-based forecast
53/100medium activity

Clear: 15–21 °C

  • MondaySeptember 7weather-based forecast
    52/100medium activity

    Cloudy: 16–17 °C

  • Nearby towns

    • Launceston8 mi
    • Bude9 mi

    Bite calendar

    Friday, September 4

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

    Atlantic salmon

    5/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. Pressure is dropping — this usually boosts the bite.

    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

    An average day — best chances during peak windows.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 16 °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 °C16 °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 6 hPa over the day — the bite usually settles down after a rise.

    Pressure through the day, 6 hPa change
    00:00 · 101723:00 · 1023 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

    4 SepFriday, September 4
    +17°

    Drizzle · feels like +15°

    Low / high
    +15°…+19°
    Precipitation
    0.1 mm
    Wind
    12 mph WNW
    Cloud cover
    100%
    Humidity
    84%
    Pressure
    1018 hPa
    00:00+19°0.1 mm12 mphsouthwest wind, 12 mph94%100%
    01:00+19°—13 mphsouthwest wind, 13 mph93%100%
    02:00+18°—13 mphsouthwest wind, 13 mph96%100%
    03:00+18°0.1 mm14 mphsouthwest wind, 14 mph96%100%
    04:00+18°—15 mphsouthwest wind, 15 mph94%100%
    05:00+19°—15 mphwest wind, 15 mph91%93%
    06:00+19°—15 mphwest wind, 15 mph91%100%
    07:00+18°0.3 mm15 mphwest wind, 15 mph96%100%
    08:00+17°—9 mphwest wind, 9 mph94%98%
    09:00+18°—11 mphnorthwest wind, 11 mph84%35%
    10:00+18°—11 mphnorthwest wind, 11 mph75%93%
    11:00+18°—12 mphnorthwest wind, 12 mph78%100%
    12:00+17°0.1 mm12 mphnorthwest wind, 12 mph84%100%
    13:00+18°—13 mphnorthwest wind, 13 mph66%100%
    14:00+18°—13 mphnorthwest wind, 13 mph56%100%
    15:00+18°—12 mphnorthwest wind, 12 mph59%100%
    16:00+18°—13 mphnorthwest wind, 13 mph59%100%
    17:00+18°—12 mphwest wind, 12 mph65%100%
    18:00+17°—11 mphnorthwest wind, 11 mph65%100%
    19:00+17°—10 mphnorthwest wind, 10 mph67%100%
    20:00+16°—9 mphnorthwest wind, 9 mph70%100%
    21:00+15°—8 mphwest wind, 8 mph70%98%
    22:00+15°—8 mphwest wind, 8 mph74%32%
    23:00+15°—7 mphwest wind, 7 mph74%0%
    +19°+17°+15°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Friday, September 4
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:38
    Sunset
    19:58
    Day length
    13 h 20 min
    Sunshine hours
    2 h 41 min
    UV index
    2
    low
    Moon
    Last quarter
    Moonrise
    22:52
    Moonset
    15:58

    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 windowFriday, September 4
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major05:55–07:55Moon overhead
    • Minor15:28–16:28Moonset
    • Major18:26–20:26Moon underfoot
    • Minor22:22–23:22Moonrise

    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 Tamar0.3 mi
    • Lana Lake2 mi
    • River Deer3 mi
    • River Claw3 mi
    • River Carey4 mi
    • River Neet7 mi
    • River Ottery7 mi
    • Stratt7 mi
    • Neet8 mi
    • River Kensey8 mi

    Nearby water bodies

    • LakeBlagdon Lake3 mi
    • ReservoirRoadford Lake8 mi
    • ReservoirLower Tamar Lake8 mi