- Ecology: Moderate
- Chemical: Unknown
WFD classification · NL60_ROER
Water temperature for Pike
Warm — slow23°C est.ideal 8–18°C
0°14°28°
How to fish it · for Pike
When
Spring (April–May) and autumn (September–November); summer pike fishing dawn/dusk
Where
Limburg river flowing from Germany and Belgium with some trout in the upper sections near the border.
Why this works
Water at 23.1°C. This is the line where catch-and-release kills pike. Do not fish for them today.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
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
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Pike fly box
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
Permits & access
Permit required — see local rules.
- VISpas (Dutch fishing pass) required — available from Sportvisserij Nederland
- No national exam required.
What's coming
Plan ahead
5-day outlook
Water here around 23°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Roer Terrain map
Water quality (WFD)
The full read · show the working · for Pike · confidence 90%
How the 5 is built — score × weight = contribution
Temperature7 × 28%2.0
Flow90 × 22%19.8
Clarity85 × 18%15.3
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity48 × 12%5.8
Limiting factor: Water temperature (23.1°C) is outside Pike's preferred range (8–18°C)= 56
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 8–18 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 March → 30 September
- Pike 31 May → 28 February
Dutch national closed season for pike (snoek) is 1 March–last Saturday of May (release-only during that window) — correcting an earlier assumption of a Dec–Feb closure. No Roer/Limburg-specific exception was found. The close date shifts yearly (last Saturday of May); '31 May' reflects 2026 and will need updating in years where that Saturday falls later.
Related guides
Booking & contacts
Roer
Water temperature for Pike
Warm — slow23°C est.ideal 8–18°C
0°14°28°
How to fish it · for Pike
When
Spring (April–May) and autumn (September–November); summer pike fishing dawn/dusk
Where
Limburg river flowing from Germany and Belgium with some trout in the upper sections near the border.
Why this works
Water at 23.1°C. This is the line where catch-and-release kills pike. Do not fish for them today.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
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
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Pike fly box
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
14–16 · Nymph
Search the runs and pockets, dead-drift near the bottom.
Permits & access
Permit required — see local rules.
- VISpas (Dutch fishing pass) required — available from Sportvisserij Nederland
- No national exam required.
What's coming
Plan ahead
5-day outlook
Water here around 23°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Roer Terrain map
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · NL60_ROER
The full read · show the working · for Pike · confidence 90%
How the 5 is built — score × weight = contribution
Temperature7 × 28%2.0
Flow90 × 22%19.8
Clarity85 × 18%15.3
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity48 × 12%5.8
Limiting factor: Water temperature (23.1°C) is outside Pike's preferred range (8–18°C)= 56
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 8–18 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 March → 30 September
- Pike 31 May → 28 February
Dutch national closed season for pike (snoek) is 1 March–last Saturday of May (release-only during that window) — correcting an earlier assumption of a Dec–Feb closure. No Roer/Limburg-specific exception was found. The close date shifts yearly (last Saturday of May); '31 May' reflects 2026 and will need updating in years where that Saturday falls later.
Related guides
Booking & contacts