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  • Forecast
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© 2026·AI-powered bite forecast
0.1.0+2163 · 92c14a40

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Ireland / County Kerry / Sea Portmagee Channel

Bite forecast: Sea Portmagee Channel

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Best fishing days for the next week

  1. MondaySeptember 7weather-based forecast
    63/100high activity

    Drizzle: 13–15 °C

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Nearby rivers

  • Carhan River8 mi

Nearby water bodies

  • BayBallinskelligs Bay8 mi

Sea Portmagee Channel (County Kerry) — one of the area's fishing spots. The town of Cahersiveen is nearby. Salt water, not fresh — so this page carries its own marine bite forecast. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

WednesdaySeptember 9weather-based forecast
62/100high activity

Drizzle: 12–15 °C

  • SaturdaySeptember 5weather-based forecast
    56/100medium activity

    Drizzle: 12–19 °C

  • Nearby towns

    • Cahersiveen7 mi

    Bite calendar

    Friday, September 4

    Aug 31 – Sep 6
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Bite activity:highmediumlowslow
    Based on:weatherseasonal
    What is a bite calendar?
    PollackAtlantic mackerelBallan wrasseConger eelEuropean eelEuropean sea bassFlounderGrey mulletThornback rayAtlantic salmonBrown troutPlaiceWhitingAtlantic cod

    Atlantic cod

    4/10 · Weak

    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 — 07:00–08:00 (dawn bite) and 20:00–21:00 (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: pirk or lugworm bottom rig.

    Gear

    No special gear needed — seasonal clothing will do. 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 14 °C — warmer than the 4–12 °C comfort range for Atlantic cod: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 4–12 °C comfort rangecomfort 4–12 °C14 °C
    JFMAMJJASOND

    Atlantic cod 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 cod feeds0:0012:0024:00

    Pressure is rising 10 hPa over the day — the bite usually settles down after a rise.

    Pressure through the day, 10 hPa change
    00:00 · 101223:00 · 1022 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 cod here.

    JFMAMJJASOND

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

    Tides

    • Low water03:14-1.4 m
    • High water09:350.6 m
    • Low water15:52-1.3 m
    • High water22:140.4 m
    0:006:0012:0018:0023:000:006:0012:0018:0023:00
    Sea level height by hour
    00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
    -0.3 m-0.8 m-1.2 m-1.4 m-1.3 m-1.0 m-0.6 m-0.2 m0.3 m0.5 m0.6 m0.3 m-0.0 m-0.5 m-0.9 m-1.2 m-1.3 m-1.2 m-0.9 m-0.5 m-0.1 m0.2 m0.4 m0.3 m

    Open-Meteo tide model, grid point 1.1 mi away

    Water

    Water temp.
    17 °C
    In the model
    14 °C
    Wave
    3.1 m
    Period
    9 s

    Open-Meteo Marine model, grid cell 1.1 mi from the waterbody. Values are daily means.

    4 SepFriday, September 4
    +16°

    Cloudy · feels like +11°

    Low / high
    +13°…+16°
    Precipitation
    0.0 mm
    Wind
    18 mph W
    Cloud cover
    100%
    Humidity
    66%
    Pressure
    1017 hPa
    00:00+14°1.0 mm11 mphwest wind, 11 mph97%100%
    01:00+15°0.1 mm11 mphwest wind, 11 mph95%100%
    02:00+15°—11 mphwest wind, 11 mph93%100%
    03:00+15°0.1 mm15 mphwest wind, 15 mph93%100%
    04:00+14°—15 mphwest wind, 15 mph77%11%
    05:00+14°—16 mphwest wind, 16 mph75%100%
    06:00+14°—14 mphwest wind, 14 mph75%100%
    07:00+14°—17 mphwest wind, 17 mph72%100%
    08:00+14°—15 mphwest wind, 15 mph71%92%
    09:00+15°—16 mphwest wind, 16 mph77%99%
    10:00+15°—18 mphwest wind, 18 mph71%95%
    11:00+15°—18 mphwest wind, 18 mph70%100%
    12:00+16°—18 mphwest wind, 18 mph66%100%
    13:00+13°0.2 mm15 mphwest wind, 15 mph83%100%
    14:00+16°—17 mphwest wind, 17 mph66%24%
    15:00+16°—17 mphwest wind, 17 mph63%5%
    16:00+14°—14 mphwest wind, 14 mph78%100%
    17:00+15°—16 mphwest wind, 16 mph70%75%
    18:00+15°—15 mphwest wind, 15 mph72%39%
    19:00+15°—13 mphwest wind, 13 mph71%27%
    20:00+14°—11 mphwest wind, 11 mph71%41%
    21:00+14°—10 mphwest wind, 10 mph70%98%
    22:00+14°—9 mphwest wind, 9 mph72%73%
    23:00+13°—6 mphwest wind, 6 mph73%58%
    +16°+15°+13°
    Weather throughout the day
    0:006:0012:0018:0023:00

    Sun and moon

    Friday, September 4
    The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
    DaylightMoon above the horizon
    Sunrise
    06:56
    Sunset
    20:20
    Day length
    13 h 24 min
    Sunshine hours
    6 h 26 min
    UV index
    3
    moderate
    Moon
    Last quarter
    Moonrise
    23:09
    Moonset
    16:31

    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

    +15% in the windowFriday, September 4
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major06:20–08:20Moon overhead
    • Minor16:01–17:01Moonset
    • Major18:51–20:51Moon underfoot
    • Minor22:39–23:39Moonrise

    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?