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© 2026·AI-powered bite forecast
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United Kingdom / Cornwall / Lariggan River

Bite forecast: Lariggan River

  • length 7 km
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Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    56/100medium activity

    Partly cloudy: 14–17 °C

  2. SundaySeptember 6weather-based forecast
    53/100medium activity

    Clear: 15–21 °C

  3. MondaySeptember 7weather-based forecast
    52/100medium activity

    Cloudy: 16–17 °C

Nearby towns

  • Penzance0.6 mi
  • St. Ives7 mi
  • Hayle8 mi

Lariggan River (Cornwall) — a spot well known among anglers. About 7 km long. Nearby towns: Penzance, St. Ives and Hayle. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.

Bite calendar

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
DaceEuropean eelGraylingPikeBarbelRuffeWhitefishZanderAtlantic salmonBreamPerchBrown troutCarpWels catfishRainbow troutRoachCrucian carpIdeBleakChubRuddTenchWhite bream

Atlantic salmon

6/10 · Fair

Hourly activity

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

The bite is moderate — fish feed in short bursts. Pressure is rising — activity tends to be more subdued.

Peak bite hours

Best time — 06:00–08:00 (dawn bite) and 20:00–21:00 (dusk bite).

Tactics

Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.

Lures

In clear water, natural colors work best: salmon spoon or salmon fly.

Gear

No special gear needed — seasonal clothing will do.

Summary

An average day — best chances during peak windows.

How this forecast is calculated

Why this forecast

The computed water temperature is around 16 °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 °C16 °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 flat: it moves no more than 1 hPa over the day, so the weather isn't shifting today's bite.

Pressure through the day, 1 hPa change
00:00 · 102323:00 · 1024 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

5 SepSaturday, September 5
+18°

Partly cloudy · feels like +17°

Low / high
+12°…+20°
Precipitation
0.0 mm
Wind
6 mph S
Cloud cover
76%
Humidity
61%
Pressure
1026 hPa
00:00+15°—7 mphwest wind, 7 mph71%100%
01:00+14°—6 mphwest wind, 6 mph72%45%
02:00+15°—5 mphwest wind, 5 mph75%55%
03:00+15°—5 mphwest wind, 5 mph72%0%
04:00+12°—5 mphwest wind, 5 mph75%0%
05:00+13°—4 mphwest wind, 4 mph75%66%
06:00+13°—4 mphwest wind, 4 mph78%66%
07:00+13°—3 mphwest wind, 3 mph82%59%
08:00+14°—2 mphsouth wind, 2 mph77%80%
09:00+16°—3 mphsouth wind, 3 mph73%71%
10:00+17°—3 mphsouthwest wind, 3 mph63%52%
11:00+18°—5 mphsouth wind, 5 mph61%57%
12:00+18°—6 mphsouth wind, 6 mph61%76%
13:00+19°—8 mphsouth wind, 8 mph60%70%
14:00+19°—7 mphsouth wind, 7 mph56%63%
15:00+20°—7 mphsouth wind, 7 mph57%45%
16:00+19°—9 mphsouth wind, 9 mph61%80%
17:00+18°—8 mphsouth wind, 8 mph65%75%
18:00+18°—7 mphsouth wind, 7 mph67%7%
19:00+17°—6 mphsouth wind, 6 mph73%12%
20:00+16°—4 mphsoutheast wind, 4 mph80%57%
21:00+15°—5 mphsoutheast wind, 5 mph83%0%
22:00+15°—5 mphsoutheast wind, 5 mph83%67%
23:00+15°—6 mphsoutheast wind, 6 mph83%95%
+20°+16°+12°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Saturday, September 5
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:40
Sunset
19:55
Day length
13 h 15 min
Sunshine hours
10 h 55 min
UV index
3
moderate
Moon
Waning crescent
Moonrise
—
Moonset
17:04

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 windowSaturday, September 5
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major07:06–09:06Moon overhead
  • Minor16:34–17:34Moonset
  • Major19:37–21:37Moon underfoot

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

  • Newlyn Coombe River0.9 mi
  • Red River4 mi
  • River Hayle6 mi
  • Nance Stream7 mi

Nearby water bodies

  • ReservoirBoscathnoe Reservoir0.3 mi
  • ReservoirDrift Reservoir1 mi
  • ReservoirBussow Reservoir6 mi
  • LakeRSPB Hayle Estuary Nature Reserve7 mi
  • LakeCarnsew Pool7 mi
  • LakeCopperhouse Pool8 mi
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