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

Bite forecast: River Moy

  • length 59 km
  • Flows into Killala Bay
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Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    61/100high activity

    Clear: 10–14 °C

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Nearby rivers

  • Cloonlee River0.9 mi
  • Strade River3 mi
  • Gweestion River3 mi
  • Little River3 mi
  • Tooreen River4 mi
  • Spaddagh River4 mi
  • Yellow River6 mi

Nearby water bodies

  • LakeLough Cat2 mi
  • LakeBob Gay's Lough2 mi
  • LakeLough Holan3 mi
  • LakeRichards Lough3 mi
  • LakeLough Muck3 mi
  • LakeCallow Lough Upper3 mi
  • LakeCallow Lough Lower4 mi
  • LakeLough Cullin5 mi
  • LakeDerryhick Lough5 mi
  • LakeCreggaballagh Lough5 mi

River Moy (County Mayo) — a spot well known among anglers. About 59 km long. Flows into Killala Bay. Close by — Ballina, Foxford and Swinford. 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
56/100medium activity

Drizzle: 15–17 °C

  • SaturdaySeptember 5weather-based forecast
    56/100medium activity

    Drizzle: 11–17 °C

  • Nearby towns

    • Ballina0.1 mi
    • Foxford0.1 mi
    • Swinford2 mi

    Bite calendar

    Wednesday, September 2

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    European eelPikeBreamCarpPerchAtlantic salmonBrown troutRainbow troutRoachBleakWhite breamRuddTench

    Atlantic salmon

    6/10 · Fair

    Hourly activity

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

    The bite is strong — fish are active. Pressure is rising — activity tends to be more subdued.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 20:00–22:00 (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

    No special gear needed — seasonal clothing will do. 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 14 °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 °C14 °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 4 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 4 hPa change
    00:00 · 101423:00 · 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 an active season for Atlantic salmon here.

    JFMAMJJASOND

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

    2 SepWednesday, September 2
    +17°

    Drizzle · feels like +17°

    Low / high
    +14°…+17°
    Precipitation
    0.2 mm
    Wind
    9 mph SW
    Cloud cover
    100%
    Humidity
    96%
    Pressure
    1010 hPa
    00:00+14°—3 mphsouth wind, 3 mph96%100%
    01:00+14°—2 mphsouth wind, 2 mph96%100%
    02:00+14°—3 mphsoutheast wind, 3 mph97%100%
    03:00+14°0.8 mm4 mphsoutheast wind, 4 mph98%100%
    04:00+14°0.5 mm4 mphsoutheast wind, 4 mph98%100%
    05:00+14°—2 mphsoutheast wind, 2 mph99%100%
    06:00+15°—5 mphsoutheast wind, 5 mph98%100%
    07:00+15°—4 mphsouth wind, 4 mph98%100%
    08:00+15°0.1 mm5 mphsouth wind, 5 mph98%100%
    09:00+15°—6 mphsouth wind, 6 mph98%100%
    10:00+16°—7 mphsouth wind, 7 mph99%100%
    11:00+16°0.3 mm7 mphsouth wind, 7 mph99%100%
    12:00+17°0.2 mm9 mphsouthwest wind, 9 mph96%100%
    13:00+17°—11 mphsouthwest wind, 11 mph96%99%
    14:00+16°0.2 mm11 mphsouthwest wind, 11 mph96%100%
    15:00+17°—11 mphsouthwest wind, 11 mph93%100%
    16:00+16°—11 mphsouthwest wind, 11 mph92%100%
    17:00+16°0.2 mm9 mphsouthwest wind, 9 mph95%100%
    18:00+17°0.4 mm11 mphsouthwest wind, 11 mph98%98%
    19:00+17°0.1 mm12 mphsouthwest wind, 12 mph99%100%
    20:00+17°—13 mphsouthwest wind, 13 mph97%99%
    21:00+16°—13 mphsouthwest wind, 13 mph94%100%
    22:00+16°0.1 mm12 mphsouthwest wind, 12 mph94%100%
    23:00+16°0.1 mm12 mphwest wind, 12 mph94%100%
    +17°+16°+14°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Wednesday, September 2
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:48
    Sunset
    20:26
    Day length
    13 h 38 min
    Sunshine hours
    0 min
    UV index
    1
    low
    Moon
    Waning gibbous
    Moonrise
    21:34
    Moonset
    13:51

    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 windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major04:21–06:21Moon overhead
    • Minor13:21–14:21Moonset
    • Major16:48–18:48Moon underfoot
    • Minor21:04–22:04Moonrise

    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?