Rules at a glance
- Permit required
Water temperature for Grayling
Ideal13.3°Cideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Poor — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalModerate confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
Permits & access
Permit required — see local rules.
- Zentralschweizer Fluss mit kantonalen Vorschriften; vor dem Angeln unbedingt die genauen Anforderungen für Schwyz und angrenzende Gewässer prüfen, statt sich auf eine allgemeine Zentralschweiz-Angabe zu verlassen.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 2
Muota Terrain map
The full read · show the working · for Grayling · confidence 55%
How the 20 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity10 × 18%1.8
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Limiting factor: Water is unfishable — too coloured for Grayling= 60
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 15 September
Related guides
Booking & contacts
Muota
Water temperature for Grayling
Ideal13.3°Cideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Poor — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalModerate confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
Permits & access
Permit required — see local rules.
- Zentralschweizer Fluss mit kantonalen Vorschriften; vor dem Angeln unbedingt die genauen Anforderungen für Schwyz und angrenzende Gewässer prüfen, statt sich auf eine allgemeine Zentralschweiz-Angabe zu verlassen.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 2
Muota Terrain map
The full read · show the working · for Grayling · confidence 55%
How the 20 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity10 × 18%1.8
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Limiting factor: Water is unfishable — too coloured for Grayling= 60
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
A drop and clear would lift the flow and clarity scores.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 15 September
Related guides
Booking & contacts