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  • Forecast
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© 2026·AI-powered bite forecast
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United Kingdom / Perth and Kinross / River Earn

Bite forecast: River Earn

  • length 75 km
  • Flows into Inner Tay Estuary
Loading map…

Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    68/100high activity

    Partly cloudy: 6–12 °C

River Earn (Perth and Kinross) — a spot well known among anglers. About 75 km long. Flows into Inner Tay Estuary. Nearby towns: Bridge of Earn, Auchterarder and Perth. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.

ThursdaySeptember 3weather-based forecast
60/100high activity

Cloudy: 11–15 °C

  • SundaySeptember 6weather-based forecast
    60/100high activity

    Drizzle: 14–17 °C

  • Nearby towns

    • Bridge of Earn0.1 mi
    • Auchterarder2 mi
    • Perth2 mi

    Nearby rivers

    • Turret Burn4 mi
    • River Knaik6 mi
    • Water of Ruchill7 mi
    • Allan Water8 mi
    • Lurg Burn8 mi
    • River Lednock9 mi

    Nearby water bodies

    • LakeBennybeg pond0.8 mi
    • LakePond of Drummond1 mi
    • LakeLoch of Balloch3 mi
    • LakeLoch Monzievaird4 mi
    • ReservoirLoch Meallbrodden5 mi
    • LakeCarsebreck Loch6 mi
    • LakeLoch Horn7 mi
    • ReservoirLoch Turret7 mi
    • LakeWhite Moss Loch8 mi
    • LakeKeltie Loch8 mi
    Loading map…

    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?
    BreamCarpWels catfishDaceEuropean eelGraylingPikeWhitefishZanderAtlantic salmonBarbelBrown troutChubCrucian carpIdePerchRuddRuffeWhite breamBleakRainbow troutRoachTench

    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 — 06:00–08:00 (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 1 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 1 hPa change
    00:00 · 100623:00 · 1004 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
    +14°

    Cloudy · feels like +11°

    Low / high
    +11°…+15°
    Precipitation
    0.0 mm
    Wind
    12 mph SW
    Cloud cover
    100%
    Humidity
    75%
    Pressure
    1008 hPa
    00:00+11°—3 mphsouthwest wind, 3 mph99%100%
    01:00+12°0.3 mm2 mphsouthwest wind, 2 mph98%100%
    02:00+13°0.1 mm2 mphsouthwest wind, 2 mph95%100%
    03:00+14°0.1 mm12 mphwest wind, 12 mph92%100%
    04:00+14°—14 mphwest wind, 14 mph90%100%
    05:00+13°—15 mphwest wind, 15 mph89%22%
    06:00+12°—18 mphwest wind, 18 mph87%2%
    07:00+11°—17 mphwest wind, 17 mph83%0%
    08:00+12°—7 mphwest wind, 7 mph86%70%
    09:00+13°—11 mphwest wind, 11 mph80%8%
    10:00+14°—14 mphwest wind, 14 mph75%43%
    11:00+14°—13 mphwest wind, 13 mph74%17%
    12:00+14°—12 mphsouthwest wind, 12 mph75%100%
    13:00+15°—13 mphwest wind, 13 mph69%100%
    14:00+15°—14 mphsouthwest wind, 14 mph70%100%
    15:00+15°—12 mphsouthwest wind, 12 mph70%100%
    16:00+14°—11 mphsouthwest wind, 11 mph78%100%
    17:00+14°—9 mphsouthwest wind, 9 mph80%100%
    18:00+14°—7 mphsouth wind, 7 mph86%100%
    19:00+13°0.1 mm8 mphsouthwest wind, 8 mph88%100%
    20:00+13°—12 mphsouthwest wind, 12 mph81%100%
    21:00+12°0.4 mm9 mphwest wind, 9 mph91%98%
    22:00+12°—11 mphwest wind, 11 mph86%5%
    23:00+11°—5 mphwest wind, 5 mph88%36%
    +15°+13°+11°
    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
    06:22
    Sunset
    20:05
    Day length
    13 h 43 min
    Sunshine hours
    4 h 22 min
    UV index
    2
    low
    Moon
    Last quarter
    Moonrise
    21:25
    Moonset
    15:17

    The day is 5 min shorter than yesterday.

    Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

    Solunar feeding periods

    +13% in the windowThursday, September 3
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major04:55–06:55Moon overhead
    • Minor14:47–15:47Moonset
    • Major17:25–19:25Moon underfoot
    • Minor20:55–21:55Moonrise

    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?