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Where to fish

  • Forecast
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Forecast
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© 2026·AI-powered bite forecast
0.1.0+2161 · b4069346

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United Kingdom / Hertfordshire / River Stort

Bite forecast: River Stort

  • length 29 km
  • Flows into River Lea
Loading map…

Best fishing days for the next week

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

    Cloudy: 15–21 °C

Loading map…

River Stort (Hertfordshire) — one of the area's fishing spots. About 29 km long. Flows into River Lea. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

Catches

Recorded 11 catches here. Most commonly caught: Pike, Crucian carp, Chub. Peak season: March–October.

  • Pike
    River Stort
    7 °C27 mph
    Mar 10, 2019, 4:36 PM
  • Chub
    River Stort
    8 °C11 mph
    Mar 08, 2019, 5:43 PM
  • Chub
    River Stort
    8 °C11 mph
    Mar 08, 2019, 5:35 PM
  • Pike
    River Stort
    14 °C9 mph
    Oct 24, 2018, 5:59 PM
  • Pike
    River Stort
    23 °C16 mph
    Oct 13, 2018, 8:42 AM
  • Perch
    River Stort
    14 °C16 mph
    Oct 05, 2017, 5:19 PM
  • Tench
    River Stort
    17 °C9 mph
    Jul 15, 2015, 8:38 PM
  • Crucian carp
    River Stort
    14 °C13 mph
    May 28, 2015, 8:30 PM
SundaySeptember 6weather-based forecast
53/100medium activity

Partly cloudy: 16–25 °C

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

    Cloudy: 14–17 °C

  • 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?

    Nearby rivers

    • River Stort1 mi
    • Town Arm1 mi
    • River Stort Navigation4 mi
    • River Roding6 mi
    • Stanstead Mill Stream8 mi

    Nearby water bodies

    • LakeLysander Park Fishery1 mi
    • LakeLancaster Lake2 mi
    • LakeBlack Lagoon4 mi
    • LakeRiver Stort Navigation4 mi
    • LakeRedricks Lake5 mi
    • LakeRiver Stort Navigation5 mi
    • LakeRiver Stort Navigation6 mi
    • PondHorse Pond7 mi
    • LakeGreat Pond7 mi
    • LakeAbbotts Lake8 mi

    BiteGuide·From anglers’ reports

    What actually worked on this water

    Based on 11 verified catchesPeriod: 2014–2019

    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

    023
    33221
    Crucian carpPikeChubTenchPerch
    By fish species
    ValueCatchesShare
    Crucian carp327%
    Pike327%
    Chub218%
    Tench218%
    Perch19%

    By month

    vertical axis — number of catches

    023
    311213
    MarAprMayJunJulOct
    By month
    ValueCatchesShare
    Mar327%
    Apr19%
    May19%
    Jun218%
    Jul19%
    Oct327%

    By time of day

    vertical axis — number of catches

    012
    1122221
    9151617182122
    By time of day
    ValueCatchesShare
    09:0019%
    15:0019%
    16:00218%
    17:00218%
    18:00218%
    21:00218%
    22:0019%

    Air temperature, °C

    vertical axis — number of catches

    024
    4322
    5101520
    Air temperature, °C
    ValueCatchesShare
    5–9 °C436%
    10–14 °C327%
    15–19 °C218%
    20–24 °C218%

    Pressure, mmHg

    vertical axis — number of catches

    036
    1631
    750755760770
    Pressure, mmHg
    ValueCatchesShare
    750–754 mmHg19%
    755–759 mmHg655%
    760–764 mmHg327%
    770–774 mmHg19%

    Wind direction

    vertical axis — number of catches

    023
    112223
    NNESSWWNW
    Wind direction
    ValueCatchesShare
    N19%
    NE19%
    S218%
    SW218%
    W218%
    NW327%

    Wind speed, mph

    vertical axis — number of catches

    035
    11531
    0491327
    Wind speed, mph
    ValueCatchesShare
    0–2 mph19%
    4–7 mph19%
    9–11 mph545%
    13–16 mph327%
    27–29 mph19%