Stoneflies
Gammarids
Remote, beautiful water with wildness in every pool. The upper San is where the soul of the river lives.
- Mixed
Rules at a glance
- Licence required
Water temperature for Grayling
Ideal7°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Open from 1 June after the PZW spring closure, prime September through November. Cold water, low and clear; the autumn duns bring grayling up where summer fish were nymph-deep.
Where
Faster gravel runs and the heads of riffles where Carpathian grayling shoal. Deeper glide tails as the water cools into autumn.
Method
Euro-nymphing through the pockets is the daily default — Perdigons and small dropper nymphs. Switch to dries on autumn afternoons when sedges and small olives come off.
Kit
10 ft #3 nymphing rod; 9 ft #4 for dries. 4 to 5 lb fluoro tippet, 12 ft leader.
Why this works
Good — water temperature is working for you, but time of day is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Hatch timeline · todayQuiet day
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 16%
Low insect activity predicted today
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
Southern Polish trout and grayling rivers led by the Dunajec model: nymphing by day, dry fly in the evening, streamer as support.
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
- Fishing card (karta wędkarska) + PZW permit
- Guest permits available for foreign anglers without exam requirement in many districts
- Check with local PZW branch.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 2
Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · PLRW200008223319
The full read · show the working · for Grayling · confidence 55%
How the 73 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time15 × 13%2.0
Pressure80 × 7%5.6
Insect activity36 × 12%4.3
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 30 September
- Grayling 1 June → 28 February
Polish PZW national rule: grayling (lipień) protected 1 March – 31 May. Open window 1 June – 28 February. PZW district and water-specific rules may add tighter restrictions. Carpathian rivers (San, Dunajec, Biała, Skawa, Raba) hold excellent grayling — check local Okręg PZW district permit for specific conditions.
Closed in spring for spawning.
Prime sport 1 September → 30 November
- Hucho 1 May → 31 March
Related guides
Booking & contacts
San
Major Carpathian river in the Bieszczady mountains, brown trout and grayling with huchen present in some sections—one of Europe's few remaining Danube salmon rivers.
Water temperature for Grayling
Ideal7°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Open from 1 June after the PZW spring closure, prime September through November. Cold water, low and clear; the autumn duns bring grayling up where summer fish were nymph-deep.
Where
Faster gravel runs and the heads of riffles where Carpathian grayling shoal. Deeper glide tails as the water cools into autumn.
Method
Euro-nymphing through the pockets is the daily default — Perdigons and small dropper nymphs. Switch to dries on autumn afternoons when sedges and small olives come off.
Kit
10 ft #3 nymphing rod; 9 ft #4 for dries. 4 to 5 lb fluoro tippet, 12 ft leader.
Why this works
Good — water temperature is working for you, but time of day is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Hatch timeline · todayQuiet day
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 16%
Low insect activity predicted today
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Grayling fly box
Southern Polish trout and grayling rivers led by the Dunajec model: nymphing by day, dry fly in the evening, streamer as support.
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
- Fishing card (karta wędkarska) + PZW permit
- Guest permits available for foreign anglers without exam requirement in many districts
- Check with local PZW branch.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 2
Terrain map
About this water
Remote, beautiful water with wildness in every pool. The upper San is where the soul of the river lives.
- Mixed
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · PLRW200008223319
The full read · show the working · for Grayling · confidence 55%
How the 73 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time15 × 13%2.0
Pressure80 × 7%5.6
Insect activity36 × 12%4.3
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 30 September
- Grayling 1 June → 28 February
Polish PZW national rule: grayling (lipień) protected 1 March – 31 May. Open window 1 June – 28 February. PZW district and water-specific rules may add tighter restrictions. Carpathian rivers (San, Dunajec, Biała, Skawa, Raba) hold excellent grayling — check local Okręg PZW district permit for specific conditions.
Closed in spring for spawning.
Prime sport 1 September → 30 November
- Hucho 1 May → 31 March
Related guides
Booking & contacts
At a glance
San is a freestone river in Podkarpackie / Bieszczady, Poland. It sits at about 361 m above sea level. The river is described as roughly 443 km long. Our data lists brown trout, grayling and hucho here. The trout season is recorded as running from 1 April to 30 September. The hucho season is recorded as running from 1 May to 31 March. Core methods listed: Nymph fishing; Dry fly. Level and flow data for this water is linked from 2 gauges. Its Water Framework Directive ecological status is recorded as good. Nearby waters in our listings include Solina Lake at 18 km.