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Ireland / County Donegal / Devlin River

Bite forecast: Devlin River

  • length 1 km
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Best fishing days for the next week

  1. ThursdaySeptember 10weather-based forecast
    67/100high activity

    Cloudy: 11–16 °C

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Nearby rivers

  • River Barra4 mi
  • Cromore Burn4 mi

Nearby water bodies

  • ReservoirDunlewey Lough0.8 mi
  • LakeLough Nabrackmea1 mi
  • LakeCroloughan Lough2 mi
  • LakeLough Maam2 mi
  • LakeSand Lough2 mi
  • LakeLough Atirrive Big2 mi
  • LakeLough Nacreevagh2 mi
  • LakeLough Atirrive2 mi
  • LakeLough Slievesnaght3 mi
  • ReservoirLough Nacung3 mi

Devlin River (County Donegal) — one of the area's fishing spots. About 1 km long. Close by — Falcarragh and Dungloe. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

FridaySeptember 11weather-based forecast
60/100high activity

Drizzle: 13–15 °C

  • WednesdaySeptember 9weather-based forecast
    59/100medium activity

    Cloudy: 10–13 °C

  • Nearby towns

    • Falcarragh8 mi
    • Dungloe11 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 eelPikeBreamPerchAtlantic salmonBrown troutCarpRainbow troutRoachBleakRuddTenchWhite bream

    Atlantic salmon

    6/10 · Fair

    Hourly activity

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

    The bite is strong — fish are active. Weather is steady, with no sharp swings — fish behave predictably.

    Peak bite hours

    Best time — 06:00–09:00 (dawn bite) and 19:00–22:00 (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 6 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 6 hPa change
    00:00 · 101123:00 · 1005 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

    7 SepMonday, September 7
    +13°

    Drizzle · feels like +10°

    Low / high
    +11°…+15°
    Precipitation
    0.3 mm
    Wind
    17 mph SW
    Cloud cover
    94%
    Humidity
    84%
    Pressure
    1009 hPa
    00:00+13°—11 mphsouthwest wind, 11 mph87%4%
    01:00+13°—10 mphsouthwest wind, 10 mph84%66%
    02:00+13°0.0 mm11 mphsouthwest wind, 11 mph84%96%
    03:00+13°0.1 mm12 mphsouthwest wind, 12 mph87%97%
    04:00+13°0.1 mm11 mphsouthwest wind, 11 mph87%100%
    05:00+12°0.1 mm13 mphsouthwest wind, 13 mph88%100%
    06:00+12°0.1 mm13 mphsouthwest wind, 13 mph88%100%
    07:00+12°0.1 mm14 mphsouthwest wind, 14 mph88%100%
    08:00+13°—15 mphsouthwest wind, 15 mph84%93%
    09:00+13°—17 mphsouthwest wind, 17 mph80%84%
    10:00+14°—18 mphsouthwest wind, 18 mph77%80%
    11:00+14°0.3 mm18 mphsouthwest wind, 18 mph80%85%
    12:00+13°0.3 mm17 mphsouthwest wind, 17 mph84%94%
    13:00+13°0.3 mm17 mphsouthwest wind, 17 mph85%100%
    14:00+14°0.2 mm18 mphsouthwest wind, 18 mph78%100%
    15:00+14°0.2 mm20 mphsouthwest wind, 20 mph66%100%
    16:00+15°0.2 mm20 mphwest wind, 20 mph59%95%
    17:00+14°—19 mphwest wind, 19 mph59%84%
    18:00+14°—18 mphsouthwest wind, 18 mph62%70%
    19:00+13°—17 mphsouthwest wind, 17 mph66%63%
    20:00+13°0.2 mm16 mphwest wind, 16 mph71%74%
    21:00+12°0.2 mm15 mphwest wind, 15 mph77%93%
    22:00+11°0.2 mm15 mphwest wind, 15 mph82%100%
    23:00+11°0.5 mm15 mphwest wind, 15 mph84%78%
    +15°+13°+11°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Monday, September 7
    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
    20:09
    Day length
    13 h 19 min
    Sunshine hours
    11 h 28 min
    UV index
    4
    moderate
    Moon
    Waning crescent
    Moonrise
    01:08
    Moonset
    19:02

    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

    +11% in the windowMonday, September 7
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor00:38–01:38Moonrise
    • Major09:18–11:18Moon overhead
    • Minor18:32–19:32Moonset
    • Major21:47–23:47Moon 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?