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Forecast
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© 2026·AI-powered bite forecast
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United Kingdom / Hertfordshire / Atlantic salmon

Atlantic salmon bite in Hertfordshire

Atlantic salmon lives in Hertfordshire. Today's bite forecast, a day-by-day and hour-by-hour activity calendar, best time and baits.

Atlantic salmon bite forecast in Hertfordshire today

Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    62/100high activity

    Cloudy: 14–17 °C

    Best fishing time: 06:00–09:00

  2. WednesdaySeptember 2weather-based forecast
    60/100high activity

    Cloudy: 15–21 °C

    Best fishing time: 05:00–08:00

  3. SundaySeptember 6weather-based forecast
    58/100medium activity

    Partly cloudy: 16–25 °C

    Best fishing time: 19:00–22:00

How to catch Atlantic salmon

Tackle, baits, spots and seasons — a full guide to catching Atlantic salmon.

Read the guide →

Other fish in Hertfordshire

  • Roach102 catches
  • Perch69 catches
  • Carp43 catches
  • Bream39 catches
  • Tench23 catches
  • Chub21 catches
  • Pike16 catches
  • Dace10 catches
  • White bream6 catches
  • Barbel4 catches
  • Crucian carp3 catches
  • Brown trout2 catches
  • Atlantic salmon 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?
    Rivers

    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 19:00–21:00 (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

    No special gear needed — seasonal clothing will do. Rain is expected — don't forget a rain jacket or a waterproof shell.

    Summary

    Worth going — it's a productive day.

    Why this forecast

    The computed water temperature is around 17 °C — warmer than the 4–14 °C comfort range for Atlantic salmon: in the heat it drops deeper and feeds less often.

    Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C17 °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 3 hPa over the day — fish are usually more active ahead of a weather change.

    Pressure through the day, 3 hPa change
    00:00 · 102023:00 · 1017 hPa

    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
    +20°

    Cloudy · feels like +17°

    Low / high
    +15°…+21°
    Precipitation
    0.0 mm
    Wind
    11 mph SW
    Cloud cover
    100%
    Humidity
    60%
    Pressure
    1019 hPa
    00:00+16°—6 mphsouthwest wind, 6 mph73%89%
    01:00+15°—6 mphwest wind, 6 mph79%95%
    02:00+16°—6 mphwest wind, 6 mph77%100%
    03:00+16°—6 mphwest wind, 6 mph79%100%
    04:00+16°—6 mphwest wind, 6 mph81%100%
    05:00+16°—6 mphsouthwest wind, 6 mph81%100%
    06:00+15°—6 mphsouthwest wind, 6 mph81%100%
    07:00+15°—6 mphsouthwest wind, 6 mph82%100%
    08:00+17°—9 mphsouthwest wind, 9 mph78%97%
    09:00+17°—10 mphsouthwest wind, 10 mph76%100%
    10:00+19°—11 mphsouthwest wind, 11 mph68%100%
    11:00+20°—12 mphsouthwest wind, 12 mph61%100%
    12:00+20°—11 mphsouthwest wind, 11 mph60%100%
    13:00+21°—15 mphsouthwest wind, 15 mph57%58%
    14:00+19°—14 mphsouthwest wind, 14 mph66%97%
    15:00+19°0.1 mm16 mphsouthwest wind, 16 mph75%100%
    16:00+20°—17 mphsouthwest wind, 17 mph71%73%
    17:00+21°—17 mphsouthwest wind, 17 mph69%87%
    18:00+20°—15 mphsouthwest wind, 15 mph73%100%
    19:00+20°—14 mphsouthwest wind, 14 mph78%100%
    20:00+19°0.1 mm10 mphsouthwest wind, 10 mph86%53%
    21:00+19°—10 mphsouthwest wind, 10 mph87%66%
    22:00+18°—11 mphsouthwest wind, 11 mph87%10%
    23:00+18°—12 mphsouthwest wind, 12 mph86%77%
    +21°+18°+15°
    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
    06:14
    Sunset
    19:45
    Day length
    13 h 31 min
    Sunshine hours
    1 h 47 min
    UV index
    1
    low
    Moon
    Waning gibbous
    Moonrise
    21:11
    Moonset
    13:02

    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

    +13% in the windowWednesday, September 2
    Feeding windows on the day scale, local time0:0012:0024:00
    Major periodsMinor periods
    • Major03:44–05:44Moon overhead
    • Minor12:32–13:32Moonset
    • Major16:11–18:11Moon underfoot
    • Minor20:41–21:41Moonrise

    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?