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Forecast
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© 2026·AI-powered bite forecast
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Ireland / County Leitrim / Diffagher River

Bite forecast: Diffagher River

  • length 20 km
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Best fishing days for the next week

  1. TuesdaySeptember 8weather-based forecast
    61/100high activity

    Partly cloudy: 9–14 °C

  2. SaturdaySeptember 5weather-based forecast
    57/100medium activity

    Partly cloudy: 8–16 °C

  3. WednesdaySeptember 2weather-based forecast
    56/100medium activity

    Drizzle: 14–19 °C

Nearby towns

  • Drumshanbo7 mi
  • Manorhamilton9 mi
  • Ballinamore12 mi

Diffagher River (County Leitrim) — a popular fishing spot. About 20 km long. Close by — Drumshanbo, Manorhamilton and Ballinamore. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

Loading map…

Bite calendar

7–Sep 13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
European eelPikePerchAtlantic salmonBreamBrown troutRainbow troutCarpRoachBleakWhite breamRuddTench

Atlantic salmon

7/10 · Good

Hourly activity

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

The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite.

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. 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 13 °C — inside the 4–14 °C comfort range for Atlantic salmon, so baseline activity is high.

Computed water temperature by month; the green band is the 4–14 °C comfort rangecomfort 4–14 °C13 °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 13 hPa over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 13 hPa change
00:00 · 101723:00 · 1004 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

8 SepTuesday, September 8
+14°

Partly cloudy · feels like +12°

Low / high
+9°…+14°
Precipitation
0.8 mm
Wind
8 mph SSE
Cloud cover
82%
Humidity
79%
Pressure
1009 hPa
00:00+12°—13 mphwest wind, 13 mph73%100%
01:00+12°—12 mphwest wind, 12 mph75%97%
02:00+11°—11 mphwest wind, 11 mph77%87%
03:00+11°—10 mphwest wind, 10 mph81%73%
04:00+10°—9 mphwest wind, 9 mph84%57%
05:00+10°—7 mphwest wind, 7 mph86%41%
06:00+9°—6 mphwest wind, 6 mph87%29%
07:00+9°—6 mphwest wind, 6 mph87%23%
08:00+10°—6 mphwest wind, 6 mph84%24%
09:00+11°—6 mphwest wind, 6 mph79%31%
10:00+12°—6 mphwest wind, 6 mph72%41%
11:00+13°0.4 mm7 mphsouthwest wind, 7 mph74%65%
12:00+14°0.8 mm8 mphsouth wind, 8 mph79%82%
13:00+13°1.1 mm9 mpheast wind, 9 mph87%92%
14:00+13°1.2 mm11 mphnortheast wind, 11 mph97%100%
15:00+12°1.2 mm11 mphnortheast wind, 11 mph97%100%
16:00+12°1.2 mm12 mphnorth wind, 12 mph97%100%
17:00+11°1.2 mm13 mphnorth wind, 13 mph96%100%
18:00+11°1.2 mm14 mphnorth wind, 14 mph96%100%
19:00+11°1.2 mm14 mphnorth wind, 14 mph95%100%
20:00+10°0.4 mm14 mphnorth wind, 14 mph94%89%
21:00+10°0.4 mm14 mphnorth wind, 14 mph93%73%
22:00+10°0.4 mm14 mphnorth wind, 14 mph91%55%
23:00+10°0.4 mm14 mphnorth wind, 14 mph90%36%
+14°+12°+9°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Tuesday, September 8
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:52
Sunset
20:05
Day length
13 h 13 min
Sunshine hours
0 min
UV index
4
moderate
Moon
Waning crescent
Moonrise
02:49
Moonset
19:14

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 windowTuesday, September 8
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Minor02:19–03:19Moonrise
  • Major10:15–12:15Moon overhead
  • Minor18:44–19:44Moonset
  • Major22:41–00:00Moon 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?

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