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© 2026·AI-powered bite forecast
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Ireland / County Cavan / River Knappagh Water

Bite forecast: River Knappagh Water

  • length 5 km
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Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    61/100high activity

    Cloudy: 9–14 °C

  2. MondaySeptember 7weather-based forecast
    57/100medium activity

    Drizzle: 12–15 °C

  3. SaturdaySeptember 5weather-based forecast
    54/100medium activity

    Cloudy: 11–16 °C

Nearby towns

  • Cootehill5 mi
  • Bailieborough8 mi
  • Kingscourt11 mi

River Knappagh Water (County Cavan) — a popular fishing spot. About 5 km long. Close by — Cootehill, Bailieborough and Kingscourt. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

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Bite calendar

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

Atlantic salmon

6/10 · Fair

Hourly activity

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

The bite is strong — fish are active. A thunderstorm is possible: activity rises before the front and drops after.

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

The water's turning murky — go with bright, noisy lures: salmon spoon or salmon fly.

Gear

Pack transitional-season clothing — mornings and evenings are chilly. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.

Summary

Worth going — it's a productive day.

How this forecast is calculated

Why this forecast

The computed water temperature is around 14 °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 °C14 °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 6 hPa over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 6 hPa change
00:00 · 101823:00 · 1012 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
+15°

Cloudy · feels like +13°

Low / high
+11°…+18°
Precipitation
0.0 mm
Wind
11 mph SSW
Cloud cover
100%
Humidity
67%
Pressure
1020 hPa
00:00+11°—10 mphsouthwest wind, 10 mph90%68%
01:00+11°—10 mphsouthwest wind, 10 mph92%100%
02:00+11°—9 mphsouthwest wind, 9 mph93%100%
03:00+11°—9 mphsouthwest wind, 9 mph93%100%
04:00+11°—9 mphsouthwest wind, 9 mph93%100%
05:00+11°—8 mphsouthwest wind, 8 mph93%100%
06:00+11°—8 mphsouthwest wind, 8 mph93%100%
07:00+11°—8 mphsouthwest wind, 8 mph92%100%
08:00+12°—8 mphsouthwest wind, 8 mph88%100%
09:00+13°—8 mphsouthwest wind, 8 mph82%100%
10:00+14°—9 mphsouthwest wind, 9 mph77%100%
11:00+15°—10 mphsouthwest wind, 10 mph72%100%
12:00+15°—11 mphsouth wind, 11 mph67%100%
13:00+16°—11 mphsouth wind, 11 mph66%100%
14:00+15°1.2 mm11 mphsouth wind, 11 mph72%100%
15:00+14°1.2 mm10 mphsouth wind, 10 mph83%100%
16:00+14°1.2 mm10 mphsoutheast wind, 10 mph91%100%
17:00+14°2.0 mm11 mphsoutheast wind, 11 mph94%100%
18:00+14°2.0 mm13 mphsoutheast wind, 13 mph94%100%
19:00+15°2.0 mm15 mphsouth wind, 15 mph94%100%
20:00+16°0.3 mm15 mphsouth wind, 15 mph94%100%
21:00+17°0.3 mm16 mphsouth wind, 16 mph93%100%
22:00+18°0.3 mm16 mphsouth wind, 16 mph93%100%
23:00+18°—16 mphsouth wind, 16 mph93%100%
+18°+14°+11°
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
06:45
Sunset
20:10
Day length
13 h 25 min
Sunshine hours
52 min
UV index
4
moderate
Moon
Waning crescent
Moonrise
23:46
Moonset
17:40

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 windowSaturday, September 5
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major07:10–09:10Moon overhead
  • Minor17:10–18:10Moonset
  • Major19:41–21:41Moon underfoot
  • Minor23:16–00:00Moonrise

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

  • Knappagh Water0.1 mi

Nearby water bodies

  • LakeLisclogher Lough0.5 mi
  • LakeMoyduff Lough1 mi
  • LakeDerrygoony Lough1 mi
  • LakeLough Tacker1 mi
  • LakeBlack Lough1 mi
  • LakeBlack Lough1 mi
  • LakeMullaghard Lough2 mi
  • LakeCoskemduff Lough2 mi
  • LakeKehernaghkilly Lough2 mi
  • LakeBaraghy Lough2 mi