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

Roach bite in Cornwall

Recorded 1 catch of Roach in Cornwall. Most active — July. A day-by-day bite calendar for Roach.

Roach bite forecast in Cornwall today

Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    63/100high activity

    Drizzle: 11–15 °C

    Best fishing time: 13:00–16:00

  2. MondaySeptember 7weather-based forecast
    61/100high activity

    Cloudy: 15–19 °C

    Best fishing time: 12:00–15:00

  3. SaturdaySeptember 5weather-based forecast
    55/100medium activity

    Cloudy: 13–19 °C

    Best fishing time: 12:00–15:00

How to catch Roach

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

Read the guide →

Map of waters and catches

Loading map…

Where it's caught

  • River Tamar1 catch

Catches

  • Perch, Roach
    River Tamar
    26 °C7 mph
    Jul 22, 2021, 3:55 PM

Other fish in Cornwall

  • Brown trout10 catches
  • Carp5 catches
  • Wels catfish3 catches

Roach bite calendar

Thursday, September 3

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?

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 — 11:00–16:00 (daytime activity).

Tactics

Pick a stretch of steady current, chum one spot and fish it — don't move around without reason.

Lures

Today's bait — maggot or dough bait. In cold or murky water, add scent to your chum.

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.

Why this forecast

The computed water temperature is around 17 °C — inside the 10–22 °C comfort range for Roach, so baseline activity is high.

Computed water temperature by month; the green band is the 10–22 °C comfort rangecomfort 10–22 °C17 °C
JFMAMJJASOND

Roach feeds by day — between sunrise and sunset; their times are in the sun-and-moon card above.

The day: daylight hours and when Roach feeds0:0012:0024:00

Pressure is dropping 2 hPa over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 2 hPa change
00:00 · 101923:00 · 1017 hPa

September is an average month for Roach here.

JFMAMJJASOND

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

3 SepThursday, September 3
+20°

Cloudy · feels like +20°

Low / high
+18°…+21°
Precipitation
0.0 mm
Wind
10 mph WSW
Cloud cover
98%
Humidity
92%
Pressure
1020 hPa
00:00+18°—10 mphwest wind, 10 mph97%100%
01:00+18°0.1 mm10 mphwest wind, 10 mph96%99%
02:00+18°—7 mphsouthwest wind, 7 mph95%100%
03:00+18°0.1 mm8 mphsouthwest wind, 8 mph99%100%
04:00+18°0.1 mm9 mphsouthwest wind, 9 mph98%100%
05:00+18°0.1 mm7 mphsouthwest wind, 7 mph99%100%
06:00+18°0.5 mm9 mphwest wind, 9 mph99%100%
07:00+18°0.3 mm9 mphsouthwest wind, 9 mph99%100%
08:00+19°—9 mphsouthwest wind, 9 mph99%100%
09:00+19°—9 mphsouthwest wind, 9 mph99%100%
10:00+19°—11 mphwest wind, 11 mph98%100%
11:00+19°—12 mphwest wind, 12 mph98%100%
12:00+20°—10 mphwest wind, 10 mph92%98%
13:00+20°—11 mphwest wind, 11 mph84%86%
14:00+21°—10 mphwest wind, 10 mph86%92%
15:00+21°—13 mphwest wind, 13 mph86%80%
16:00+20°—12 mphwest wind, 12 mph83%99%
17:00+21°—11 mphwest wind, 11 mph78%72%
18:00+20°—10 mphwest wind, 10 mph81%100%
19:00+19°0.1 mm6 mphsouthwest wind, 6 mph94%100%
20:00+18°0.2 mm6 mphsouthwest wind, 6 mph97%89%
21:00+18°—8 mphsouthwest wind, 8 mph93%91%
22:00+19°—11 mphsouthwest wind, 11 mph93%99%
23:00+18°—10 mphsouthwest wind, 10 mph93%92%
+21°+19°+18°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Thursday, September 3
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:37
Sunset
20:00
Day length
13 h 23 min
Sunshine hours
1 h 37 min
UV index
2
low
Moon
Last quarter
Moonrise
22:12
Moonset
14:39

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 windowThursday, September 3
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major04:59–06:59Moon overhead
  • Minor14:09–15:09Moonset
  • Major17:29–19:29Moon underfoot
  • Minor21:42–22:42Moonrise

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?
  • Grayling2 catches
  • Atlantic salmon2 catches
  • Flounder1 catch
  • Perch1 catch
  • White bream1 catch
  • Rudd1 catch
  • Crucian carp1 catch