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

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Ireland / County Offaly / River Little Brosna

Bite forecast: River Little Brosna

  • length 48 km
  • Flows into River Shannon
Loading map…

Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    62/100high activity

    Cloudy: 9–14 °C

Loading map…

River Little Brosna (County Offaly) — a spot well known among anglers. About 48 km long. Flows into River Shannon. Close by — Birr, Banagher and Cloghan. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

MondaySeptember 7weather-based forecast
57/100medium activity

Drizzle: 13–15 °C

  • SundaySeptember 6weather-based forecast
    55/100medium activity

    Rain: 16–20 °C

  • Nearby towns

    • Birr0.5 mi
    • Banagher3 mi
    • Cloghan7 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 eelPikePerchAtlantic salmonBreamBrown troutCarpRainbow troutRoachBleakWhite breamRuddTench

    Atlantic salmon

    6/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. Weather is steady, with no sharp swings — fish behave predictably.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 20:00–21:00 (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 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 3 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 3 hPa change
    00:00 · 101323:00 · 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

    3 SepThursday, September 3
    +19°

    Cloudy · feels like +16°

    Low / high
    +14°…+19°
    Precipitation
    0.0 mm
    Wind
    16 mph SW
    Cloud cover
    100%
    Humidity
    78%
    Pressure
    1013 hPa
    00:00+16°0.3 mm11 mphsouthwest wind, 11 mph94%89%
    01:00+16°—12 mphwest wind, 12 mph94%99%
    02:00+15°—11 mphsouthwest wind, 11 mph91%98%
    03:00+16°—10 mphsouthwest wind, 10 mph93%98%
    04:00+15°—11 mphsouthwest wind, 11 mph92%100%
    05:00+15°—10 mphsouthwest wind, 10 mph94%100%
    06:00+15°—8 mphsouthwest wind, 8 mph94%100%
    07:00+15°—8 mphsouthwest wind, 8 mph93%100%
    08:00+16°—8 mphsouthwest wind, 8 mph93%100%
    09:00+16°—9 mphsouthwest wind, 9 mph90%100%
    10:00+16°0.4 mm9 mphsouthwest wind, 9 mph96%100%
    11:00+18°—13 mphsouthwest wind, 13 mph86%100%
    12:00+19°—16 mphsouthwest wind, 16 mph78%100%
    13:00+19°0.1 mm16 mphsouthwest wind, 16 mph79%100%
    14:00+18°0.1 mm16 mphwest wind, 16 mph78%100%
    15:00+17°0.3 mm12 mphwest wind, 12 mph81%100%
    16:00+16°0.8 mm10 mphwest wind, 10 mph90%100%
    17:00+16°0.7 mm9 mphwest wind, 9 mph91%100%
    18:00+15°1.0 mm11 mphsouthwest wind, 11 mph92%100%
    19:00+15°0.7 mm11 mphsouthwest wind, 11 mph92%100%
    20:00+15°0.4 mm15 mphsouthwest wind, 15 mph93%100%
    21:00+14°0.3 mm10 mphsouthwest wind, 10 mph95%100%
    22:00+14°0.1 mm9 mphsouthwest wind, 9 mph94%100%
    23:00+14°—9 mphsouthwest wind, 9 mph94%100%
    +19°+16°+14°
    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
    06:43
    Sunset
    20:15
    Day length
    13 h 32 min
    Sunshine hours
    0 min
    UV index
    2
    low
    Moon
    Last quarter
    Moonrise
    22:06
    Moonset
    15:09

    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
    • Minor14:39–15:39Moonset
    • Major17:41–19:41Moon underfoot
    • Minor21:36–22:36Moonrise

    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

    • Little Brosna1 mi
    • Camcor5 mi
    • Palas River6 mi
    • Fuarawn River6 mi
    • Bunow River7 mi

    Nearby water bodies

    • LakeLough Roe4 mi
    • LakeLough Nahinch5 mi
    • LakeSluggery Pool6 mi
    • LakeFriar's Lough9 mi