Freestone · Granite · Lapland / Posio, FI

Iijoki

Iijoki — Iijoki Finland
Today · About as good as it gets
Ally's Shrimp style
Forecast · Today
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
55% projected
Today's fly
Ally's Shrimp style
Ally's Shrimp style
Conditions on the water · Today
Estimate
Level
Light rain recently
No gauge reading
Water temp6.3°C
ClarityClear
Weather6°C
WindN 11 km/h
Pressure1036 hPa
Rain · recent8.0 mm
Rain · ahead0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Grayling
Ideal
6°C est.ideal 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
Excellent — 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
Stoneflies
Gammarids
Hatch timeline · todayPeak at 11 Uhr

12 Uhr(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 40%
Also:Black Midge38%Autumn Olive23%
Peak emergence window3 food groups active

Peak activity at 11 Uhr — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Grayling seasonSeason
2
2
1
1
2
2
2
2
2
2
Nordic SpringflyHatch
2
3
3
2
Ladoga CaddisHatch
2
3
2
Arctic Cased CaddisHatch
2
3
3
3
2
Large Summer DunHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Fly box · Grayling
Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
  • Calendar permit + river permit via eraluvat.fi.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Iijoki — Iijoki Finland
    Iijoki Finland
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Grayling · confidence 50%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity25 × 12%3.0
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 May → 30 September
  • Grayling 1 June → 31 March

    Finnish inland grayling (harjus) rule south of 67°N: closed 1 April – 31 May. Open 1 June – 31 March. Grayling is fully protected in sea areas. Minimum size typically 30-35 cm depending on water. Check Metsähallitus (state waters) or local fishing association permit.

    Closed in spring for spawning.

    Prime sport 1 August → 30 November

Related guides
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts