Where to fish

  • Forecast
  • Catches

Mine

  • Favorites

Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
ForecastCatchesFavorites
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2163 · 92c14a40

We use cookies for analytics and advertising. Cookies necessary for the site to function are always kept. Learn more

United States / North Dakota / Main Bay

Bite forecast: Main Bay

  • 26.5 sq mi
Loading map…

Best fishing days for the next week

  1. ThursdaySeptember 3weather-based forecast
    65/100high activity

    Cloudy: 63–90 °F

Loading map…

Nearby water bodies

  • LakeDevils Lake2 mi
  • BayKnudson's Bay3 mi
  • LakeSweetwater Lake4 mi
  • BayCreel Bay4 mi
  • BaySix Mile Bay5 mi
  • LakeCourt Lake5 mi
  • BayMission Bay5 mi
  • LakeMallard Lake5 mi
  • LakeTwin Lakes7 mi
  • BayEast Bay8 mi

Main Bay (North Dakota) — a spot well known among anglers. About 68.7 km² in area. A coastal water: the bite here is modelled for the sea, not for a river or a lake. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

Catches

Recorded 1 catch here. Most commonly caught: Yellow perch. Peak season: February.

  • Yellow perch
    Devils Lake
    10 °F16 mph
    Feb 18, 2018
MondaySeptember 7weather-based forecast
65/100high activity

Drizzle: 70–88 °F

  • WednesdaySeptember 9weather-based forecast
    61/100high activity

    Clear: 55–73 °F

  • 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?
    Chinook salmon

    Chinook salmon

    5/10 · Fair

    Hourly activity

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

    The bite is moderate — fish feed in short bursts. Weather is steady, with no sharp swings — fish behave predictably.

    Peak bite hours

    Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

    Tactics

    Look for structure — reefs, flats, channel edges; work them slowly near the bottom.

    Lures

    The water's turning murky — go with bright, noisy lures: trolling spoon or trolling plug.

    Gear

    It's a hot day — a hat, sunglasses, and plenty of water are a must. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    An average day — best chances during peak windows.

    How this forecast is calculated

    Why this forecast

    The computed water temperature is around 71 °F — warmer than the 43–59 °F comfort range for Chinook salmon: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 43–59 °F comfort rangecomfort 43–59 °F71 °F
    JFMAMJJASOND

    Chinook 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 Chinook salmon feeds0:0012:0024:00

    Pressure is dropping 0.09 inHg over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 0.09 inHg change
    00:00 · 29.8223:00 · 29.72 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 an average month for Chinook salmon here.

    JFMAMJJASOND

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

    3 SepThursday, September 3
    +80°

    Cloudy · feels like +83°

    Low / high
    +63°…+89°
    Precipitation
    0.00 in
    Wind
    2 mph SE
    Cloud cover
    100%
    Humidity
    55%
    Pressure
    29.75 inHg
    00:00+67°—6 mpheast wind, 6 mph68%100%
    01:00+66°—6 mpheast wind, 6 mph76%99%
    02:00+65°—5 mphnortheast wind, 5 mph77%64%
    03:00+64°—3 mphnortheast wind, 3 mph78%100%
    04:00+64°—5 mphnortheast wind, 5 mph75%56%
    05:00+64°—4 mpheast wind, 4 mph74%100%
    06:00+63°—4 mphnortheast wind, 4 mph77%98%
    07:00+64°—5 mpheast wind, 5 mph72%100%
    08:00+66°—5 mpheast wind, 5 mph67%100%
    09:00+67°0.06 in11 mpheast wind, 11 mph67%100%
    10:00+74°—8 mphsoutheast wind, 8 mph58%100%
    11:00+76°—9 mphsoutheast wind, 9 mph58%100%
    12:00+80°—2 mphsoutheast wind, 2 mph55%100%
    13:00+82°—6 mpheast wind, 6 mph55%100%
    14:00+86°—10 mpheast wind, 10 mph52%100%
    15:00+88°—9 mpheast wind, 9 mph51%59%
    16:00+89°—10 mpheast wind, 10 mph50%14%
    17:00+89°—12 mpheast wind, 12 mph51%11%
    18:00+88°—13 mpheast wind, 13 mph52%11%
    19:00+86°—9 mphsoutheast wind, 9 mph56%0%
    20:00+82°—6 mphsoutheast wind, 6 mph61%0%
    21:00+79°—8 mpheast wind, 8 mph67%0%
    22:00+77°—10 mphsoutheast wind, 10 mph68%7%
    23:00+76°—10 mphsoutheast wind, 10 mph72%6%
    +89°+76°+63°
    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
    06:50
    Sunset
    20:03
    Day length
    13 h 13 min
    Sunshine hours
    8 h 24 min
    UV index
    5
    moderate
    Moon
    Last quarter
    Moonrise
    22:53
    Moonset
    15:03

    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
    • Major05:31–07:31Moon overhead
    • Minor14:33–15:33Moonset
    • Major18:00–20:00Moon underfoot
    • Minor22:23–23:23Moonrise

    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?