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Forecast
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© 2026·AI-powered bite forecast
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United Kingdom / Highland / River Glass

Bite forecast: River Glass

  • length 15 km
  • Flows into River Beauly
Loading map…

Best fishing days for the next week

  1. WednesdaySeptember 2weather-based forecast
    64/100high activity

    Clear: 8–14 °C

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Nearby rivers

  • Allt nan Caorach3 mi
  • River Sgitheach3 mi
  • Averon River5 mi
  • River Peffery6 mi
  • Abhainn Beinn nan Eun7 mi
  • Peffery Burn7 mi
  • Rosskeen Burn8 mi

Nearby water bodies

  • LakeLoch Misirich4 mi
  • LakeLoch Glass4 mi
  • LakeLoch Dubh5 mi
  • LakeDingwall Canal5 mi
  • LakeLoch Morie5 mi
  • LakeLoch a' Choire Mhòir6 mi
  • LakeCulbokie Loch6 mi
  • LakeLoch nan Druidean7 mi
  • LakeLoch Bad a' Bhàthaich7 mi
  • LakeLoch Achnacloich7 mi

River Glass (Highland) — one of the area's fishing spots. About 15 km long. Flows into River Beauly. Nearby towns: Alness, Invergordon and Cromarty. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

ThursdaySeptember 3weather-based forecast
60/100high activity

Partly cloudy: 11–15 °C

  • TuesdaySeptember 8weather-based forecast
    60/100high activity

    Drizzle: 9–12 °C

  • Nearby towns

    • Alness3 mi
    • Invergordon5 mi
    • Cromarty10 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?
    Wels catfishBreamCarpDaceEuropean eelGraylingWhitefishAtlantic salmonBarbelBrown troutChubCrucian carpIdePikeRuffeWhite breamZanderPerchRainbow troutRuddBleakRoachTench

    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 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

    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 12 °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 °C12 °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 · 101323:00 · 1007 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
    +12°

    Clear · feels like +10°

    Low / high
    +8°…+14°
    Precipitation
    0.0 mm
    Wind
    5 mph SE
    Cloud cover
    9%
    Humidity
    62%
    Pressure
    1014 hPa
    00:00+10°0.8 mm6 mphwest wind, 6 mph90%83%
    01:00+10°—3 mphwest wind, 3 mph90%80%
    02:00+9°—2 mphwest wind, 2 mph92%81%
    03:00+8°—3 mphnorthwest wind, 3 mph93%45%
    04:00+8°—4 mphnorthwest wind, 4 mph90%63%
    05:00+8°—2 mphwest wind, 2 mph93%48%
    06:00+8°—3 mphwest wind, 3 mph92%52%
    07:00+8°—3 mphwest wind, 3 mph87%43%
    08:00+9°—3 mphsoutheast wind, 3 mph84%0%
    09:00+9°—3 mphsoutheast wind, 3 mph81%44%
    10:00+10°—3 mphsoutheast wind, 3 mph73%2%
    11:00+11°—4 mphsoutheast wind, 4 mph68%100%
    12:00+12°—5 mphsoutheast wind, 5 mph62%9%
    13:00+13°—5 mphsoutheast wind, 5 mph61%8%
    14:00+14°—5 mphsoutheast wind, 5 mph62%23%
    15:00+14°—7 mphsoutheast wind, 7 mph63%52%
    16:00+14°—9 mphsoutheast wind, 9 mph66%65%
    17:00+14°—9 mphsoutheast wind, 9 mph69%91%
    18:00+13°—9 mphsoutheast wind, 9 mph72%85%
    19:00+12°—7 mphsoutheast wind, 7 mph74%81%
    20:00+12°—4 mphsoutheast wind, 4 mph77%100%
    21:00+12°—4 mphsoutheast wind, 4 mph80%100%
    22:00+12°—3 mphsoutheast wind, 3 mph82%100%
    23:00+12°1.0 mm4 mphsoutheast wind, 4 mph89%100%
    +14°+11°+8°
    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
    06:22
    Sunset
    20:15
    Day length
    13 h 53 min
    Sunshine hours
    10 h 31 min
    UV index
    3
    moderate
    Moon
    Waning gibbous
    Moonrise
    20:46
    Moonset
    13:56

    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

    +12% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major04:00–06:00Moon overhead
    • Minor13:26–14:26Moonset
    • Major16:27–18:27Moon underfoot
    • Minor20:16–21:16Moonrise

    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?