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© 2026·AI-powered bite forecast
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Ireland / County Donegal / Cashelnagor Lough

Bite forecast: Cashelnagor Lough

  • 3 ha
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Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    70/100high activity

    Cloudy: 9–12 °C

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Nearby rivers

  • Glenna River0.5 mi
  • Tullaghobegly River2 mi
  • Gleanna River2 mi
  • Owentully3 mi
  • Cromore Burn3 mi
  • Ray River3 mi

Nearby water bodies

  • LakeLough Agannive0.7 mi
  • LakeLough Agrougha2 mi
  • LakeLough Altan2 mi
  • LakeLough Trusk2 mi
  • LakeLough Nacreevagh2 mi
  • LakeLough Feane2 mi
  • LakeLough Muilt3 mi
  • LakeLough Adinn3 mi
  • LakeLough Lagha3 mi
  • LakeLough Aluirg3 mi

Cashelnagor Lough (County Donegal) — a popular fishing spot. About 3 ha in area. Close by — Falcarragh and Dunfanaghy. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

MondaySeptember 7weather-based forecast
65/100high activity

Cloudy: 11–14 °C

  • ThursdaySeptember 3weather-based forecast
    62/100high activity

    Drizzle: 14–16 °C

  • Nearby towns

    • Falcarragh4 mi
    • Dunfanaghy9 mi

    Bite calendar

    Thursday, September 3

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    European eelBreamCarpPikePerchBrown troutRainbow troutBleakRoachRuddWhite breamTench

    Bleak

    5/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after.

    Peak bite hours

    Best time — 11:00–17:00 (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

    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

    An average day — best chances during peak windows.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 14 °C — colder than the 14–26 °C comfort range for Bleak: the fish conserves energy and takes more cautiously.

    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 dropping 3 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 3 hPa change
    00:00 · 100923:00 · 1006 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 Bleak here.

    JFMAMJJASOND

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

    3 SepThursday, September 3
    +15°

    Drizzle · feels like +14°

    Low / high
    +13°…+16°
    Precipitation
    0.7 mm
    Wind
    11 mph SW
    Cloud cover
    100%
    Humidity
    93%
    Pressure
    1010 hPa
    00:00+15°—14 mphwest wind, 14 mph93%100%
    01:00+15°—13 mphwest wind, 13 mph90%96%
    02:00+15°—12 mphwest wind, 12 mph92%78%
    03:00+15°—13 mphwest wind, 13 mph91%74%
    04:00+14°—11 mphwest wind, 11 mph92%87%
    05:00+14°—10 mphwest wind, 10 mph92%32%
    06:00+14°—8 mphwest wind, 8 mph91%68%
    07:00+14°—8 mphsouthwest wind, 8 mph90%75%
    08:00+14°—9 mphsouthwest wind, 9 mph87%75%
    09:00+15°—11 mphsouthwest wind, 11 mph85%90%
    10:00+15°—10 mphsouthwest wind, 10 mph86%91%
    11:00+15°—10 mphsouthwest wind, 10 mph88%100%
    12:00+15°0.7 mm11 mphsouthwest wind, 11 mph93%100%
    13:00+16°—13 mphsouthwest wind, 13 mph84%100%
    14:00+16°—15 mphsouthwest wind, 15 mph75%100%
    15:00+16°—15 mphsouthwest wind, 15 mph76%100%
    16:00+16°—16 mphsouthwest wind, 16 mph77%100%
    17:00+15°—15 mphsouthwest wind, 15 mph80%100%
    18:00+14°0.4 mm13 mphsouthwest wind, 13 mph90%100%
    19:00+14°5.4 mm17 mphsouthwest wind, 17 mph92%63%
    20:00+14°—12 mphsouthwest wind, 12 mph91%52%
    21:00+14°—13 mphsouthwest wind, 13 mph91%75%
    22:00+13°—15 mphsouthwest wind, 15 mph90%0%
    23:00+14°—15 mphsouthwest wind, 15 mph90%100%
    +16°+15°+13°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Thursday, September 3
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:42
    Sunset
    20:19
    Day length
    13 h 37 min
    Sunshine hours
    1 h 39 min
    UV index
    2
    low
    Moon
    Last quarter
    Moonrise
    21:50
    Moonset
    15:25

    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 windowThursday, September 3
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major05:12–07:12Moon overhead
    • Minor14:55–15:55Moonset
    • Major17:41–19:41Moon underfoot
    • Minor21:20–22:20Moonrise

    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?