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United Kingdom / Merthyr Tydfil County Borough / Brown trout

Brown trout bite in Merthyr Tydfil County Borough

Recorded 2 catches of Brown trout in Merthyr Tydfil County Borough. Most active — March–April. A day-by-day bite calendar for Brown trout.

Brown trout bite forecast in Merthyr Tydfil County Borough today

Best fishing days for the next week

  1. SundaySeptember 6weather-based forecast
    63/100high activity

    Partly cloudy: 13–19 °C

    Best fishing time: 06:00–09:00

  2. ThursdaySeptember 3weather-based forecast
    61/100high activity

    Cloudy: 16–19 °C

    Best fishing time: 19:00–22:00

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

    Partly cloudy: 8–14 °C

    Best fishing time: 19:00–22:00

How to catch Brown trout

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

Read the guide →

Map of waters and catches

Loading map…

Where it's caught

  • River Taff2 catches

Catches

  • Brown trout
    River Taff
    8 °C18 mph
    Mar 08, 2022, 12:56 PM
  • Brown trout
    River Taff
11 °C
16 mph
Apr 16, 2018, 2:22 PM

Brown trout 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 — 06:00–07:00 (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: spinner or small crankbait.

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 16 °C — inside the 6–17 °C comfort range for Brown trout, so baseline activity is high.

Computed water temperature by month; the green band is the 6–17 °C comfort rangecomfort 6–17 °C16 °C
JFMAMJJASOND

Brown trout 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 Brown trout 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 · 101623:00 · 1014 hPa

September is an active season for Brown trout here.

JFMAMJJASOND

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

3 SepThursday, September 3
+19°

Cloudy · feels like +18°

Low / high
+16°…+19°
Precipitation
0.0 mm
Wind
9 mph WSW
Cloud cover
96%
Humidity
79%
Pressure
1017 hPa
00:00+17°0.3 mm10 mphsouthwest wind, 10 mph98%100%
01:00+17°—11 mphwest wind, 11 mph96%100%
02:00+17°—9 mphwest wind, 9 mph94%100%
03:00+17°—9 mphwest wind, 9 mph93%100%
04:00+16°—9 mphsouthwest wind, 9 mph93%100%
05:00+16°—10 mphwest wind, 10 mph92%100%
06:00+16°—9 mphwest wind, 9 mph92%100%
07:00+16°0.3 mm8 mphwest wind, 8 mph93%100%
08:00+16°—8 mphwest wind, 8 mph92%100%
09:00+17°—9 mphwest wind, 9 mph89%100%
10:00+17°—9 mphsouthwest wind, 9 mph89%100%
11:00+18°—8 mphsouthwest wind, 8 mph85%94%
12:00+19°—9 mphsouthwest wind, 9 mph79%96%
13:00+19°—11 mphsouthwest wind, 11 mph79%76%
14:00+19°—13 mphsouthwest wind, 13 mph77%86%
15:00+19°—12 mphsouthwest wind, 12 mph77%88%
16:00+19°—13 mphsouthwest wind, 13 mph77%81%
17:00+19°—13 mphsouthwest wind, 13 mph80%92%
18:00+18°—12 mphsouthwest wind, 12 mph81%98%
19:00+18°—11 mphsouthwest wind, 11 mph81%88%
20:00+17°—9 mphsouthwest wind, 9 mph88%100%
21:00+17°0.3 mm9 mphsouthwest wind, 9 mph92%100%
22:00+17°0.3 mm10 mphsouthwest wind, 10 mph94%100%
23:00+17°0.2 mm12 mphsouthwest wind, 12 mph94%100%
+19°+18°+16°
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
06:28
Sunset
19:55
Day length
13 h 27 min
Sunshine hours
2 h 38 min
UV index
2
low
Moon
Last quarter
Moonrise
21:56
Moonset
14:41

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

+11% in the windowThursday, September 3
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major04:53–06:53Moon overhead
  • Minor14:11–15:11Moonset
  • Major17:22–19:22Moon underfoot
  • Minor21:26–22:26Moonrise

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?