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© 2026·AI-powered bite forecast
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United Kingdom / Wrexham / Reservoir Cae Llwyd

Bite forecast: Reservoir Cae Llwyd

  • 4 ha
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Best fishing days for the next week

  1. SundaySeptember 6weather-based forecast
    62/100high activity

    Cloudy: 13–23 °C

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Reservoir Cae Llwyd (Wrexham) — one of the area's fishing spots. About 4 ha in area. Nearby towns: Wrexham and Chirk. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

ThursdaySeptember 3weather-based forecast
60/100high activity

Cloudy: 17–22 °C

  • WednesdaySeptember 9weather-based forecast
    57/100medium activity

    Partly cloudy: 9–15 °C

  • Nearby towns

    • Wrexham4 mi
    • Chirk6 mi

    Bite calendar

    7–Sep 13
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    DaceEuropean eelPikeWhitefishRuffeZanderBreamPerchBrown troutCarpWels catfishRainbow troutRoachChubCrucian carpIdeBleakRuddTenchWhite bream

    Bleak

    3/10 · Weak

    Hourly activity

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

    The bite is weak — fish are sluggish. Pressure is dropping — this usually boosts the bite.

    Peak bite hours

    Best time — 10:00–15:00 (daytime activity).

    Tactics

    Chum one spot near a drop-off and wait for fish to arrive — don't chase them.

    Lures

    Today's bait — maggot or small hook with dough bait. In cold or murky water, add scent to your chum.

    Gear

    Pack transitional-season clothing — mornings and evenings are chilly. Rain is expected — don't forget a rain jacket or a waterproof shell.

    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 — inside the 14–26 °C comfort range for Bleak, so baseline activity is high.

    Computed water temperature by month; the green band is the 14–26 °C comfort rangecomfort 14–26 °C14 °C
    JFMAMJJASOND

    Bleak feeds by day — between sunrise and sunset; their times are in the sun-and-moon card above.

    The day: daylight hours and when Bleak feeds0:0012:0024:00

    Pressure is rising 2 hPa over the day — the bite usually settles down after a rise.

    Pressure through the day, 2 hPa change
    00:00 · 100923:00 · 1011 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 a slow season for Bleak: the best months fall at another time of year.

    JFMAMJJASOND

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

    8 SepTuesday, September 8
    +15°

    Cloudy · feels like +13°

    Low / high
    +9°…+16°
    Precipitation
    0.0 mm
    Wind
    6 mph NW
    Cloud cover
    87%
    Humidity
    59%
    Pressure
    1008 hPa
    00:00+13°—6 mphsouthwest wind, 6 mph86%100%
    01:00+13°—6 mphsouthwest wind, 6 mph85%100%
    02:00+12°—6 mphsouthwest wind, 6 mph86%91%
    03:00+11°—6 mphsouthwest wind, 6 mph88%77%
    04:00+11°—5 mphsouthwest wind, 5 mph90%61%
    05:00+10°—5 mphsouthwest wind, 5 mph92%37%
    06:00+9°—5 mphsouthwest wind, 5 mph93%10%
    07:00+9°—5 mphsouthwest wind, 5 mph91%0%
    08:00+11°—5 mphsouthwest wind, 5 mph84%24%
    09:00+13°—5 mphwest wind, 5 mph75%65%
    10:00+15°—5 mphnorthwest wind, 5 mph67%95%
    11:00+14°—6 mphnorthwest wind, 6 mph65%70%
    12:00+15°—6 mphnorthwest wind, 6 mph59%87%
    13:00+16°—7 mphnorthwest wind, 7 mph55%95%
    14:00+16°0.1 mm7 mphnorthwest wind, 7 mph55%90%
    15:00+16°0.1 mm8 mphnorthwest wind, 8 mph56%76%
    16:00+16°0.1 mm8 mphnorthwest wind, 8 mph59%57%
    17:00+15°0.1 mm8 mphnorthwest wind, 8 mph63%36%
    18:00+14°0.1 mm9 mphnorthwest wind, 9 mph67%19%
    19:00+14°0.1 mm9 mphnorthwest wind, 9 mph70%8%
    20:00+13°0.2 mm9 mphnorthwest wind, 9 mph73%4%
    21:00+13°0.2 mm9 mphnorthwest wind, 9 mph75%5%
    22:00+12°0.2 mm10 mphnorthwest wind, 10 mph78%9%
    23:00+12°0.2 mm10 mphnorthwest wind, 10 mph80%13%
    +16°+13°+9°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Tuesday, September 8
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:33
    Sunset
    19:44
    Day length
    13 h 11 min
    Sunshine hours
    10 h 57 min
    UV index
    3
    moderate
    Moon
    Waning crescent
    Moonrise
    02:33
    Moonset
    18:50

    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

    +14% in the windowTuesday, September 8
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor02:03–03:03Moonrise
    • Major09:54–11:54Moon overhead
    • Minor18:20–19:20Moonset
    • Major22:21–00:00Moon 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?

    Nearby rivers

    • River Eitha3 mi
    • River Clywedog3 mi
    • Afon Bradley5 mi
    • River Dee6 mi
    • River Ceiriog6 mi

    Nearby water bodies

    • ReservoirTy Mawr0.3 mi
    • PondLlwyneinion Lagoon1 mi
    • ReservoirBottom Reservoir2 mi
    • ReservoirTop Reservoir2 mi
    • LakeMonks Pool3 mi
    • ReservoirPendinas Reservoir3 mi
    • ReservoirNant-y-Ffrith Reservoir4 mi
    • LakeMoss Valley Fishing Lake4 mi
    • ReservoirMarchwiel Reservoir5 mi
    • LakeLlyn Cyfynwy5 mi