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  • Forecast
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© 2026·AI-powered bite forecast
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Ireland / County Donegal / Glengesh River

Bite forecast: Glengesh River

  • length 5 km
Loading map…

Best fishing days for the next week

  1. ThursdaySeptember 10weather-based forecast
    67/100high activity

    Cloudy: 11–16 °C

  2. WednesdaySeptember 9weather-based forecast
    60/100high activity

    Cloudy: 10–13 °C

  3. FridaySeptember 11weather-based forecast
    60/100high activity

    Drizzle: 13–15 °C

Nearby towns

  • Ardara1 mi
  • Killybegs6 mi

Glengesh River (County Donegal) — a popular fishing spot. About 5 km long. Nearby towns: Ardara and Killybegs. 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.

Loading map…

Nearby rivers

  • Alghe River2 mi
  • Bracky River2 mi
  • Owenteskiny River3 mi
  • Roechrow River3 mi
  • Crow River3 mi
  • Meengilcarry River3 mi
  • Owenwee3 mi
  • Loughadeery River4 mi
  • Stragar River4 mi

Nearby water bodies

  • LakeDurlough2 mi
  • LakeShanaghan Lough2 mi
  • LakeLough Nalughraman3 mi
  • LakeLough Aleen3 mi
  • LakeLough Laub3 mi
  • LakeLough Adeery (reservoir)4 mi
  • ReservoirLough Aroshin4 mi
  • LakeLough Nameeltoge4 mi
  • LakeLough Acruppan4 mi
  • LakeLough Leahan4 mi

Bite calendar

Saturday, September 5

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
BreamEuropean eelPikeAtlantic salmonCarpPerchBrown troutRainbow troutBleakRoachRuddTenchWhite 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. A thunderstorm is possible: activity rises before the front and drops after.

Peak bite hours

Best time — 06:00–09:00 (dawn bite) and 20:00–22:00 (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

An average day — best chances during peak windows.

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 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 · 101623:00 · 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

5 SepSaturday, September 5
+14°

Drizzle · feels like +12°

Low / high
+11°…+16°
Precipitation
0.1 mm
Wind
7 mph WSW
Cloud cover
45%
Humidity
71%
Pressure
1022 hPa
00:00+13°—12 mphwest wind, 12 mph81%41%
01:00+12°2.5 mm11 mphnorthwest wind, 11 mph97%100%
02:00+12°0.2 mm10 mphwest wind, 10 mph92%93%
03:00+11°0.1 mm7 mphwest wind, 7 mph93%97%
04:00+12°—8 mphwest wind, 8 mph89%99%
05:00+12°0.2 mm9 mphwest wind, 9 mph90%93%
06:00+12°—8 mphwest wind, 8 mph89%89%
07:00+12°0.1 mm6 mphwest wind, 6 mph91%84%
08:00+12°—6 mphwest wind, 6 mph87%56%
09:00+12°0.3 mm8 mphwest wind, 8 mph92%100%
10:00+13°0.1 mm6 mphsouthwest wind, 6 mph89%98%
11:00+14°—8 mphwest wind, 8 mph77%80%
12:00+14°0.1 mm7 mphwest wind, 7 mph71%45%
13:00+13°—11 mphsouthwest wind, 11 mph78%100%
14:00+15°—6 mphsouthwest wind, 6 mph68%91%
15:00+16°—7 mphsouthwest wind, 7 mph63%76%
16:00+16°—7 mphsouthwest wind, 7 mph60%100%
17:00+16°—6 mphsouth wind, 6 mph63%98%
18:00+16°—5 mphsouth wind, 5 mph68%100%
19:00+15°—4 mphsoutheast wind, 4 mph77%100%
20:00+14°0.1 mm5 mphsoutheast wind, 5 mph81%100%
21:00+14°—11 mphsouth wind, 11 mph76%100%
22:00+14°—11 mphsoutheast wind, 11 mph85%100%
23:00+14°0.2 mm13 mphsouth wind, 13 mph90%100%
+16°+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
06:46
Sunset
20:14
Day length
13 h 28 min
Sunshine hours
3 h 50 min
UV index
3
moderate
Moon
Waning crescent
Moonrise
23:41
Moonset
17:53

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
  • Major07:14–09:14Moon overhead
  • Minor17:23–18:23Moonset
  • Major19:46–21:46Moon underfoot
  • Minor23:11–00:00Moonrise

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?