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© 2026·AI-powered bite forecast
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United States / Alaska / Summer Bay Lake

Bite forecast: Summer Bay Lake

  • 147 acres
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Best fishing days for the next week

  1. MondaySeptember 7weather-based forecast
    62/100high activity

    Cloudy: 45–52 °F

Summer Bay Lake (Alaska) — a popular fishing spot. About 60 ha in area. Nearest town — Unalaska. 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.

SundaySeptember 6weather-based forecast
60/100high activity

Cloudy: 43–57 °F

  • ThursdaySeptember 3weather-based forecast
    54/100medium activity

    Drizzle: 50–59 °F

  • Nearby towns

    • Unalaska3 mi

    Nearby rivers

    • Qungaayux̂ Creek3 mi
    • Iliuliuk River3 mi
    • Pyramid Creek5 mi
    • Shaishnikoff River8 mi
    • Nateekin River9 mi

    Nearby water bodies

    • LakeMancil Lake2 mi
    • LakeMorris Cove Pond2 mi
    • LakeUnalaska Lake3 mi
    • LakeIliuliuk Lake3 mi
    • LakeUpper Pyramid Lake4 mi
    • LakeHigh Lake4 mi
    • ReservoirPyramid Lake6 mi
    • ReservoirIcy Lake7 mi
    Loading map…

    Bite calendar

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

    In the fish list, this icon marks species recorded here by GBIF. Unmarked species may still occur in the waterbody.

    Coho salmonBrook troutSteelheadWhitefishCutthroat troutChinook salmonPikeRainbow troutLake troutBurbot

    Brook trout

    8/10 · Good

    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 — 07:00–09:00 (dawn bite) and 21:00–23:00 (dusk bite).

    Tactics

    Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.

    Lures

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

    Gear

    Pack transitional-season clothing — mornings and evenings are chilly.

    Summary

    Worth going — it's a productive day.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 51 °F — inside the 45–61 °F comfort range for Brook trout, so baseline activity is high.

    Computed water temperature by month; the green band is the 45–61 °F comfort rangecomfort 45–61 °F51 °F
    JFMAMJJASOND

    Brook 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 Brook trout feeds0:0012:0024:00

    Pressure is dropping 0.15 inHg over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 0.15 inHg change
    00:00 · 30.0523:00 · 29.91 inHg

    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 peak season for Brook trout here.

    JFMAMJJASOND

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

    6 SepSunday, September 6
    +53°

    Cloudy · feels like +51°

    Low / high
    +44°…+57°
    Precipitation
    0.00 in
    Wind
    3 mph E
    Cloud cover
    100%
    Humidity
    82%
    Pressure
    29.96 inHg
    00:00+47°—4 mphsoutheast wind, 4 mph88%100%
    01:00+46°—3 mphsoutheast wind, 3 mph90%100%
    02:00+46°—2 mphsoutheast wind, 2 mph92%100%
    03:00+45°—1 mphnortheast wind, 1 mph94%100%
    04:00+44°—2 mphnortheast wind, 2 mph95%100%
    05:00+44°—3 mphnorth wind, 3 mph96%100%
    06:00+44°—3 mphnorth wind, 3 mph97%99%
    07:00+44°—3 mphnorth wind, 3 mph96%99%
    08:00+45°—3 mphnorth wind, 3 mph95%99%
    09:00+47°—3 mphnorth wind, 3 mph93%100%
    10:00+48°—3 mphnortheast wind, 3 mph90%100%
    11:00+51°—2 mphnortheast wind, 2 mph86%100%
    12:00+53°—3 mpheast wind, 3 mph82%100%
    13:00+54°—4 mphsoutheast wind, 4 mph79%100%
    14:00+55°—5 mphsoutheast wind, 5 mph77%100%
    15:00+56°—6 mphsoutheast wind, 6 mph75%100%
    16:00+56°—6 mphsoutheast wind, 6 mph74%100%
    17:00+57°—7 mphsoutheast wind, 7 mph73%100%
    18:00+57°—7 mphsoutheast wind, 7 mph72%100%
    19:00+56°—6 mphsoutheast wind, 6 mph74%100%
    20:00+55°—6 mphsoutheast wind, 6 mph79%89%
    21:00+52°—5 mphsoutheast wind, 5 mph86%75%
    22:00+50°—5 mphsoutheast wind, 5 mph93%66%
    23:00+49°—4 mphsoutheast wind, 4 mph95%70%
    +57°+50°+44°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Sunday, September 6
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    07:36
    Sunset
    21:17
    Day length
    13 h 41 min
    Sunshine hours
    1 h 15 min
    UV index
    1
    low
    Moon
    Waning crescent
    Moonrise
    01:58
    Moonset
    20:14

    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 windowSunday, September 6
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Minor01:28–02:28Moonrise
    • Major10:16–12:16Moon overhead
    • Minor19:44–20:44Moonset
    • Major22:46–00:00Moon 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?