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Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
Forecast
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United Kingdom / Hertfordshire / River Lea

Bite forecast: River Lea

  • length 47 km
  • Flows into Bow Creek
Loading map…

Best fishing days for the next week

  1. WednesdaySeptember 2weather-based forecast
    55/100medium activity

    Cloudy: 15–21 °C

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River Lea (Hertfordshire) — one of the area's fishing spots. About 47 km long. Flows into Bow Creek. The town of St Albans is nearby. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

Catches

Recorded 37 catches here. Most commonly caught: Perch, Pike, Chub. Peak season: year-round.

  • Chub
    River Lea
    7 °C11 mph
    Mar 07, 2020, 5:20 PM
  • Chub
    River Lea
    7 °C11 mph
    Mar 07, 2020, 5:20 PM
  • Pike
    River Lea
    9 °C18 mph
    Feb 21, 2020, 1:06 PM
  • Pike
    River Lea
    9 °C18 mph
    Feb 21, 2020, 1:04 PM
  • Pike
    River Lea
    9 °C18 mph
    Feb 21, 2020, 7:35 AM
  • Pike
    River Lea
    10 °C20 mph
    Feb 01, 2020, 11:09 AM
  • Pike
    River Lea
    10 °C20 mph
    Feb 01, 2020, 9:24 AM
  • Carp
    River Lea
    7 °C9 mph
    Dec 30, 2019, 8:29 AM
SundaySeptember 6weather-based forecast
53/100medium activity

Partly cloudy: 16–25 °C

  • TuesdaySeptember 8weather-based forecast
    53/100medium activity

    Cloudy: 14–17 °C

  • Nearby towns

    • St Albans4 mi

    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?
    DaceEuropean eelGraylingPikeBarbelRuffeZanderBreamPerchWhitefishAtlantic salmonCarpWels catfishRainbow troutBrown troutIdeRoachBleakChubCrucian carpWhite breamRuddTench

    Atlantic salmon

    6/10 · Fair

    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.

    How this forecast is calculated

    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

    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 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
    21:09
    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
    • Major03:43–05:43Moon overhead
    • Minor12:32–13:32Moonset
    • Major16:10–18:10Moon underfoot
    • Minor20:39–21:39Moonrise

    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?

    BiteGuide·From anglers’ reports

    What actually worked on this water

    Based on 37 verified catchesPeriod: 2015–2020

    This is a summary of anglers' reports, not a proven cause of the bite: conditions lining up does not mean they drove it.

    By fish species

    vertical axis — number of catches

    0611
    111066211
    PerchPikeCarpChubBarbelBrown troutBurbot
    By fish species
    ValueCatchesShare
    Perch1130%
    Pike1027%
    Carp616%
    Chub616%
    Barbel25%
    Brown trout13%
    Burbot13%

    By month

    vertical axis — number of catches

    0510
    27321021163
    JanFebMarAprJunJulSepOctNovDec
    By month
    ValueCatchesShare
    Jan25%
    Feb719%
    Mar38%
    Apr25%
    Jun1027%
    Jul25%
    Sep13%
    Oct13%
    Nov616%
    Dec38%

    By time of day

    vertical axis — number of catches

    048
    112341122283223
    5678910111314151617192021
    By time of day
    ValueCatchesShare
    05:0013%
    06:0013%
    07:0025%
    08:0038%
    09:00411%
    10:0013%
    11:0013%
    13:0025%
    14:0025%
    15:0025%
    16:00822%
    17:0038%
    19:0025%
    20:0025%
    21:0038%

    Air temperature, °C

    vertical axis — number of catches

    0612
    11211733
    0510152025
    Air temperature, °C
    ValueCatchesShare
    0–4 °C13%
    5–9 °C1232%
    10–14 °C1130%
    15–19 °C719%
    20–24 °C38%
    25–29 °C38%

    Pressure, mmHg

    vertical axis — number of catches

    0816
    14216104
    740745750755760765
    Pressure, mmHg
    ValueCatchesShare
    740–744 mmHg13%
    745–749 mmHg411%
    750–754 mmHg25%
    755–759 mmHg1643%
    760–764 mmHg1027%
    765–769 mmHg411%

    Wind direction

    vertical axis — number of catches

    0917
    22221766
    NEESESSWWNW
    Wind direction
    ValueCatchesShare
    NE25%
    E25%
    SE25%
    S25%
    SW1746%
    W616%
    NW616%

    Wind speed, mph

    vertical axis — number of catches

    0611
    231110911
    04913182227
    Wind speed, mph
    ValueCatchesShare
    0–2 mph25%
    4–7 mph38%
    9–11 mph1130%
    13–16 mph1027%
    18–20 mph924%
    22–25 mph13%
    27–29 mph13%

    Nearby rivers

    • River Lea1 mi
    • Bypass Channel4 mi
    • River Mimram5 mi
    • River Rib5 mi

    Nearby water bodies

    • LakeKings Lake2 mi
    • LakeRiverside Lake2 mi
    • LakeBroadwater Lake2 mi
    • LakeBroadwater2 mi
    • LakeOsprey Lake2 mi
    • LakeLodge Lake2 mi
    • LakeThe Broadwater2 mi
    • LakeRiver Lea2 mi
    • LakeGoldings Canal3 mi
    • LakeStanborough Lake (South)3 mi