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Where to fish

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United States / Idaho / Brown trout

Brown trout bite in Idaho

Recorded 3 catches of Brown trout in Idaho. Most active — year-round. A day-by-day bite calendar for Brown trout.

Brown trout bite forecast in Idaho today

Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    88/100high activity

    Partly cloudy: 41–66 °F

    Best fishing time: 19:00–22:00

  2. ThursdaySeptember 3weather-based forecast
    79/100high activity

    Cloudy: 39–54 °F

    Best fishing time: 06:00–09:00

  3. TuesdaySeptember 8weather-based forecast
    66/100high activity

    Partly cloudy: 34–63 °F

    Best fishing time: 19:00–22:00

How to catch Brown trout

Tackle, baits, spots and seasons — a full guide to catching Brown trout.

Read the guide →

Map of waters and catches

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Where it's caught

  • Hells Canyon Reservoir3 catches

Catches

  • Brown trout
    Hells Canyon Reservoir
    46 °F0 mph
    Mar 27, 2020
  • Brown trout
    Hells Canyon Reservoir

Other fish in Idaho

  • Largemouth bass13 catches
  • Rainbow trout6 catches
  • Smallmouth bass5 catches
  • Steelhead4 catches
  • Yellow perch2 catches
41 °F
4 mph
Jan 08, 2020
  • Brown trout
    Hells Canyon Reservoir
    39 °F2 mph
    Dec 29, 2019
  • Black crappie1 catch
  • Cutthroat trout1 catch
  • Walleye1 catch
  • Brown trout 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?

    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 20:00–22:00 (dusk bite).

    Tactics

    Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.

    Lures

    In clear water, natural colors work best: spinner or small crankbait.

    Gear

    Bring a warm jacket — it's noticeably colder on the water than on shore.

    Summary

    Worth going — it's a productive day.

    Why this forecast

    The computed water temperature is around 52 °F — inside the 43–63 °F comfort range for Brown trout, so baseline activity is high.

    Computed water temperature by month; the green band is the 43–63 °F comfort rangecomfort 43–63 °F52 °F
    JFMAMJJASOND

    Brown trout 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 Brown trout feeds0:0012:0024:00

    Pressure is dropping 0.06 inHg over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 0.06 inHg change
    00:00 · 29.7223:00 · 29.65 inHg

    September is an active season for Brown trout here.

    JFMAMJJASOND

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

    3 SepThursday, September 3
    +47°

    Cloudy · feels like +38°

    Low / high
    +39°…+53°
    Precipitation
    0.00 in
    Wind
    14 mph SSW
    Cloud cover
    95%
    Humidity
    70%
    Pressure
    29.81 inHg
    00:00+42°—6 mphsouth wind, 6 mph52%5%
    01:00+41°—7 mphsouth wind, 7 mph53%100%
    02:00+40°—7 mphsouthwest wind, 7 mph57%99%
    03:00+40°—8 mphsouthwest wind, 8 mph71%88%
    04:00+40°—8 mphsouthwest wind, 8 mph73%100%
    05:00+40°—12 mphsouth wind, 12 mph74%100%
    06:00+39°—12 mphsouth wind, 12 mph80%99%
    07:00+39°—12 mphsouth wind, 12 mph82%100%
    08:00+40°—13 mphsouth wind, 13 mph83%100%
    09:00+42°—16 mphsouth wind, 16 mph79%100%
    10:00+44°—15 mphsouthwest wind, 15 mph76%32%
    11:00+45°—13 mphsouthwest wind, 13 mph76%80%
    12:00+47°—14 mphsouthwest wind, 14 mph70%95%
    13:00+50°—16 mphsouthwest wind, 16 mph61%70%
    14:00+50°—14 mphsouthwest wind, 14 mph63%93%
    15:00+53°—15 mphsouthwest wind, 15 mph54%100%
    16:00+52°—15 mphsouthwest wind, 15 mph56%100%
    17:00+51°—14 mphsouthwest wind, 14 mph61%100%
    18:00+50°—10 mphsouthwest wind, 10 mph65%100%
    19:00+49°—9 mphsouthwest wind, 9 mph66%100%
    20:00+47°—8 mphsouthwest wind, 8 mph77%100%
    21:00+46°—6 mphsouthwest wind, 6 mph86%100%
    22:00+45°—6 mphsouthwest wind, 6 mph85%100%
    23:00+45°—6 mphsouthwest wind, 6 mph76%100%
    +53°+46°+39°
    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
    06:59
    Sunset
    20:10
    Day length
    13 h 11 min
    Sunshine hours
    5 h 35 min
    UV index
    4
    moderate
    Moon
    Last quarter
    Moonrise
    23:08
    Moonset
    14:54

    The day is 3 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
    • Major05:33–07:33Moon overhead
    • Minor14:24–15:24Moonset
    • Major18:03–20:03Moon underfoot
    • Minor22:38–23:38Moonrise

    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?