Baltic-draining river in Pomerania with grayling populations alongside sea trout. Clear gravel-bottomed water flowing through forests. Part of the northern Polish grayling river network—understated and reliable.
- Mixed
Rules at a glance
- Licence required
Water temperature for Brown Trout
Welfare risk25°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 24.9°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6pm
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water 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
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Summer River MidgeHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Southern Polish trout and grayling rivers led by the Dunajec model: nymphing by day, dry fly in the evening, streamer as support.
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- Baltic-draining sections can have additional migratory-fish rules, so check local sea-trout regulations before planning a dedicated trip.
What's coming
Plan ahead
5-day outlook
Water here around 25°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Smołdzino, ul. Mostowa, most na Łupawie Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · PLRW200010472689
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature0 × 28%0.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Limiting factor: Water temperature (24.9°C) is outside Brown Trout's preferred range (10–16°C)= 57
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
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
- Pike 1 May → 31 December
National pike protection period is 1 January–30 April. No district-specific override was found for this river in the available PZW Słupsk documents, but a river-name-specific line item wasn't directly confirmed either — treating the national baseline as the working default.
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Łupawa
Baltic-draining river in Pomerania with grayling populations alongside sea trout.
Water temperature for Brown Trout
Welfare risk25°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 24.9°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6pm
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water 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
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Summer River MidgeHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Southern Polish trout and grayling rivers led by the Dunajec model: nymphing by day, dry fly in the evening, streamer as support.
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- Baltic-draining sections can have additional migratory-fish rules, so check local sea-trout regulations before planning a dedicated trip.
What's coming
Plan ahead
5-day outlook
Water here around 25°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Smołdzino, ul. Mostowa, most na Łupawie Terrain map
About this water
Baltic-draining river in Pomerania with grayling populations alongside sea trout. Clear gravel-bottomed water flowing through forests. Part of the northern Polish grayling river network—understated and reliable.
- Mixed
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · PLRW200010472689
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature0 × 28%0.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Limiting factor: Water temperature (24.9°C) is outside Brown Trout's preferred range (10–16°C)= 57
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
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
- Pike 1 May → 31 December
National pike protection period is 1 January–30 April. No district-specific override was found for this river in the available PZW Słupsk documents, but a river-name-specific line item wasn't directly confirmed either — treating the national baseline as the working default.
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts