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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
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© 2026·AI-powered bite forecast
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United Kingdom / Conwy / Rhos Bay

Bite forecast: Rhos Bay

  • 2.9 km²
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Best fishing days for the next week

  1. MondaySeptember 7weather-based forecast
    69/100high activity

    Cloudy: 12–14 °C

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Rhos Bay (Conwy) — one of the area's fishing spots. About 2.9 km² in area. Close by — Colwyn Bay and Llandudno Junction. Salt water, not fresh — so this page carries its own marine bite forecast. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

SundaySeptember 6weather-based forecast
68/100high activity

Partly cloudy: 12–22 °C

  • TuesdaySeptember 8weather-based forecast
    68/100high activity

    Partly cloudy: 9–14 °C

  • Nearby towns

    • Colwyn Bay0.3 mi
    • Llandudno Junction3 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?
    Atlantic mackerelBallan wrasseGrey mulletPollackEuropean sea bassAtlantic salmonBrown troutConger eelEuropean eelFlounderPlaiceThornback rayAtlantic codWhiting

    Atlantic cod

    3/10 · Weak

    Hourly activity

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

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

    Peak bite hours

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

    Tactics

    Look for structure — reefs, flats, channel edges; work them slowly near the bottom.

    Lures

    The water's turning murky — go with bright, noisy lures: pirk or lugworm bottom rig.

    Gear

    No special gear needed — seasonal clothing will do. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.

    Summary

    A slow day — go only if you really feel like it.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 14 °C — warmer than the 4–12 °C comfort range for Atlantic cod: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 4–12 °C comfort rangecomfort 4–12 °C14 °C
    JFMAMJJASOND

    Atlantic cod 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 cod feeds0:0012:0024:00

    Pressure is rising 9 hPa over the day — the bite usually settles down after a rise.

    Pressure through the day, 9 hPa change
    00:00 · 101023:00 · 1018 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 average month for Atlantic cod here.

    JFMAMJJASOND

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

    Tides

    • High water03:212.5 m
    • Low water10:03-2.5 m
    • High water15:522.0 m
    0:006:0012:0018:0023:000:006:0012:0018:0023:00
    Sea level height by hour
    00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
    -0.8 m0.7 m1.9 m2.5 m2.4 m1.7 m0.6 m-0.6 m-1.5 m-2.2 m-2.5 m-2.3 m-1.4 m-0.2 m1.0 m1.8 m2.0 m1.7 m0.9 m-0.1 m-1.0 m-1.7 m-2.3 m-2.4 m

    Open-Meteo tide model, grid point 5.1 mi away

    Water

    Water temp.
    19 °C
    In the model
    14 °C
    Wave
    0.9 m
    Period
    4 s

    Open-Meteo Marine model, grid cell 5.1 mi from the waterbody. Values are daily means.

    4 SepFriday, September 4
    +15°

    Cloudy · feels like +11°

    Low / high
    +13°…+15°
    Precipitation
    0.0 mm
    Wind
    13 mph WSW
    Cloud cover
    100%
    Humidity
    71%
    Pressure
    1012 hPa
    00:00+14°3.8 mm4 mphsouth wind, 4 mph97%100%
    01:00+14°5.8 mm3 mphsoutheast wind, 3 mph98%100%
    02:00+14°6.5 mm1 mpheast wind, 1 mph99%100%
    03:00+14°4.1 mm5 mphnorthwest wind, 5 mph99%100%
    04:00+13°4.2 mm6 mphnorthwest wind, 6 mph98%100%
    05:00+13°2.1 mm6 mphwest wind, 6 mph98%100%
    06:00+13°1.1 mm6 mphwest wind, 6 mph97%100%
    07:00+13°0.4 mm6 mphsouthwest wind, 6 mph95%100%
    08:00+13°—9 mphsouthwest wind, 9 mph90%100%
    09:00+13°—9 mphwest wind, 9 mph83%100%
    10:00+14°—11 mphwest wind, 11 mph76%100%
    11:00+14°—13 mphwest wind, 13 mph71%100%
    12:00+15°—13 mphwest wind, 13 mph71%100%
    13:00+15°—13 mphwest wind, 13 mph68%100%
    14:00+15°—13 mphwest wind, 13 mph69%100%
    15:00+14°—13 mphwest wind, 13 mph72%100%
    16:00+14°0.1 mm13 mphwest wind, 13 mph76%100%
    17:00+14°0.3 mm10 mphwest wind, 10 mph84%100%
    18:00+15°—10 mphsouthwest wind, 10 mph74%45%
    19:00+14°—10 mphsouthwest wind, 10 mph74%100%
    20:00+14°—11 mphsouthwest wind, 11 mph77%77%
    21:00+13°—9 mphsouthwest wind, 9 mph79%82%
    22:00+13°—10 mphwest wind, 10 mph81%100%
    23:00+13°—7 mphsouthwest wind, 7 mph81%92%
    +15°+14°+13°
    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
    06:29
    Sunset
    19:57
    Day length
    13 h 28 min
    Sunshine hours
    4 h 40 min
    UV index
    3
    moderate
    Moon
    Last quarter
    Moonrise
    22:36
    Moonset
    16:13

    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

    +12% in the windowFriday, September 4
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major05:55–07:55Moon overhead
    • Minor15:43–16:43Moonset
    • Major18:26–20:26Moon underfoot
    • Minor22:06–23:06Moonrise

    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 Gyffin6 mi
    • Afon Gell6 mi
    • River Elwy7 mi
    • Afon Gele7 mi
    • Afon Gyrach7 mi
    • Afon Roe8 mi
    • Afon Porth-llwyd9 mi
    • Afon Dulyn9 mi
    • The Cut9 mi

    Nearby water bodies

    • BayLlandudno Bay4 mi
    • LakeLlyn Syberi7 mi
    • ReservoirPlas-uchaf Reservoir9 mi
    • LakeMarine Lake9 mi
    • ReservoirDolwen Reservoir9 mi