Where to fish

  • Forecast
  • Catches

Mine

  • Favorites

Where to fish

  • Forecast
  • Catches

Mine

  • Favorites
ForecastCatchesFavorites
AboutHow the forecast worksWhere fish livePrivacyTerms[email protected]
© 2026·AI-powered bite forecast
0.1.0+2166 · bee8965a

We use cookies for analytics and advertising. Cookies necessary for the site to function are always kept. Learn more

United Kingdom / Devon / River Mardle

Bite forecast: River Mardle

  • length 4 km
Loading map…

Best fishing days for the next week

  1. SaturdaySeptember 12weather-based forecast
    69/100high activity

    Cloudy: 10–15 °C

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

    Drizzle: 11–16 °C

  3. MondaySeptember 7weather-based forecast
    65/100high activity

    Cloudy: 14–17 °C

River Mardle (Devon) — a spot well known among anglers. About 4 km long. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.

Nearby rivers

  • River Dart1 mi
  • Dart1 mi
  • River Ashburn4 mi
  • Harbourne River4 mi
  • River Hems4 mi
  • River Webburn4 mi
  • Badworthy Brook4 mi
  • Am Brook5 mi
  • West Webburn River6 mi
  • River Lemon6 mi

Nearby water bodies

  • ReservoirAvon Dam Reservoir4 mi
  • ReservoirVenford Reservoir4 mi
  • LakeRed Lake6 mi
  • LakeStover Lake8 mi
  • LakeDecoy Lake8 mi
  • LakeBlachford Fish Pond9 mi
  • LakeIsland Pond9 mi
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?
DaceEuropean eelGraylingWhitefishBarbelPikeRuffeZanderBreamWels catfishPerchAtlantic salmonBrown troutCarpIdeRainbow troutChubCrucian carpRoachBleakRuddWhite breamTench

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 rising — activity tends to be more subdued.

Peak bite hours

Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (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 6 hPa over the day — fish are usually more active ahead of a weather change.

Pressure through the day, 6 hPa change
00:00 · 102523:00 · 1019 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

12 SepSaturday, September 12
+14°

Cloudy · feels like +12°

Low / high
+10°…+15°
Precipitation
0.0 mm
Wind
7 mph WSW
Cloud cover
84%
Humidity
70%
Pressure
1025 hPa
00:00+13°—7 mphwest wind, 7 mph79%100%
01:00+12°—6 mphwest wind, 6 mph80%100%
02:00+12°—6 mphwest wind, 6 mph82%92%
03:00+11°—6 mphwest wind, 6 mph84%78%
04:00+11°—5 mphwest wind, 5 mph87%61%
05:00+10°—5 mphwest wind, 5 mph89%46%
06:00+10°—5 mphwest wind, 5 mph90%33%
07:00+10°—5 mphwest wind, 5 mph90%28%
08:00+10°—6 mphwest wind, 6 mph88%31%
09:00+11°—6 mphwest wind, 6 mph85%41%
10:00+12°—7 mphwest wind, 7 mph81%54%
11:00+13°—7 mphwest wind, 7 mph75%68%
12:00+14°—7 mphsouthwest wind, 7 mph70%84%
13:00+15°—8 mphsouthwest wind, 8 mph67%97%
14:00+15°0.1 mm8 mphsouthwest wind, 8 mph67%100%
15:00+15°0.1 mm9 mphsouthwest wind, 9 mph70%100%
16:00+14°0.1 mm9 mphsouthwest wind, 9 mph73%100%
17:00+13°0.1 mm9 mphsouthwest wind, 9 mph77%100%
18:00+13°0.1 mm9 mphsouthwest wind, 9 mph81%100%
19:00+12°0.1 mm10 mphsouthwest wind, 10 mph84%100%
20:00+12°1.8 mm11 mphsouthwest wind, 11 mph86%100%
21:00+12°1.8 mm13 mphsouthwest wind, 13 mph89%100%
22:00+13°1.8 mm15 mphsouthwest wind, 15 mph92%100%
23:00+13°1.8 mm16 mphsouthwest wind, 16 mph94%100%
+15°+12°+10°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Saturday, September 12
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
19:36
Day length
12 h 50 min
Sunshine hours
10 h 9 min
UV index
4
moderate
Moon
New moon
Moonrise
08:23
Moonset
19:46

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 12
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major00:49–02:49Moon underfoot
  • Minor07:53–08:53Moonrise
  • Major13:12–15:12Moon overhead
  • Minor19:16–20:16Moonset

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?