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Forecast
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© 2026·AI-powered bite forecast
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Ireland / County Cavan / Cavan River

Bite forecast: Cavan River

  • length 49 km
Loading map…

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    58/100medium activity

    Clear: 9–15 °C

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Nearby rivers

  • Cavan River32 mi

Nearby water bodies

  • LakeCoalpit Lough0 mi
  • LakePeartree Lough0.4 mi
  • LakeDerrygid Lough0.5 mi
  • LakeFarnham Lough0.5 mi
  • LakeSwan Lough0.6 mi
  • LakeLough Inchin0.8 mi
  • LakeLough Bane1 mi
  • LakeDrumgola Lough1 mi
  • LakeLough Nagor1 mi
  • LakeCarratraw Lough2 mi

Cavan River (County Cavan) — a popular fishing spot. About 49 km long. Close by — Cavan, Belturbet and Ballyconnell. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

WednesdaySeptember 2weather-based forecast
57/100medium activity

Drizzle: 15–20 °C

  • SaturdaySeptember 5weather-based forecast
    55/100medium activity

    Partly cloudy: 9–17 °C

  • Nearby towns

    • Cavan0.1 mi
    • Belturbet5 mi
    • Ballyconnell10 mi

    Bite calendar

    7–Sep 13
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    European eelPikePerchAtlantic salmonRainbow troutBreamBrown troutCarpRoachBleakWhite breamRuddTench

    Atlantic salmon

    7/10 · Good

    Hourly activity

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

    The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite.

    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

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

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 13 °C — inside the 4–14 °C comfort range for Atlantic salmon, so baseline activity is high.

    Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C13 °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 15 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 15 hPa change
    00:00 · 101723:00 · 1002 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

    8 SepTuesday, September 8
    +15°

    Clear · feels like +13°

    Low / high
    +9°…+15°
    Precipitation
    1.0 mm
    Wind
    8 mph SSE
    Cloud cover
    59%
    Humidity
    77%
    Pressure
    1009 hPa
    00:00+13°—11 mphwest wind, 11 mph74%100%
    01:00+12°—11 mphwest wind, 11 mph77%100%
    02:00+11°—10 mphwest wind, 10 mph79%88%
    03:00+11°—10 mphwest wind, 10 mph82%70%
    04:00+10°—9 mphwest wind, 9 mph85%49%
    05:00+10°—9 mphsouthwest wind, 9 mph86%28%
    06:00+9°—9 mphsouthwest wind, 9 mph87%11%
    07:00+9°—8 mphsouthwest wind, 8 mph86%0%
    08:00+10°—8 mphsouthwest wind, 8 mph83%0%
    09:00+11°—8 mphsouthwest wind, 8 mph77%0%
    10:00+13°—7 mphwest wind, 7 mph70%5%
    11:00+14°0.5 mm7 mphsouth wind, 7 mph72%34%
    12:00+15°1.0 mm8 mphsoutheast wind, 8 mph77%59%
    13:00+14°1.5 mm11 mpheast wind, 11 mph86%81%
    14:00+14°1.2 mm14 mphnortheast wind, 14 mph96%100%
    15:00+13°1.2 mm15 mphnorth wind, 15 mph96%100%
    16:00+13°1.2 mm17 mphnorth wind, 17 mph96%100%
    17:00+12°1.2 mm18 mphnorth wind, 18 mph95%100%
    18:00+12°1.2 mm20 mphnorth wind, 20 mph95%100%
    19:00+12°1.2 mm20 mphnorth wind, 20 mph94%100%
    20:00+11°0.9 mm21 mphnorth wind, 21 mph93%100%
    21:00+11°0.9 mm20 mphnorth wind, 20 mph92%99%
    22:00+11°0.9 mm20 mphnorth wind, 20 mph91%99%
    23:00+11°0.9 mm19 mphnorth wind, 19 mph90%98%
    +15°+12°+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
    06:50
    Sunset
    20:03
    Day length
    13 h 13 min
    Sunshine hours
    0 min
    UV index
    4
    moderate
    Moon
    Waning crescent
    Moonrise
    02:45
    Moonset
    19:10

    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
    • Minor02:15–03:15Moonrise
    • Major10:10–12:10Moon overhead
    • Minor18:40–19:40Moonset
    • Major22:37–00:00Moon 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?