Stillwater · Mixed · Hokkaido, JP

Lake Shumarinai

Lake Shumarinai 01
Fair · Sakhalin Taimen
Large baitfish streamer · 8–10
A respectable few hours, if you choose your moments
Good wave on — drift country. A useful wave. Work the productive shore.
49% confidence
limited data

Lake Shumarinai is often best in spring through autumn.

What moved it
  • WindSW 7 km/hLight breeze · Gusts to 8 km/h
Today's fly
LB
Large baitfish streamer8–10
Strip it for fish chasing fry or in coloured water.
Conditions on the water
Estimate
Wind
Light breeze · Gusts to 8 km/h
SW 7 km/h
N
SW
from the south-west
WaveRipple
Water temp6.3°C
Air temp2°C
CloudOvercast
Pressure1018 hPa
Rain · recent0.0 mm

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

How to fish it · for Sakhalin Taimen
When
Spring and autumn
Where
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Claret DunHatch
2
3
2
Heather FlyHatch
2
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Ranked for today
Fly box · Sakhalin Taimen
LB
Large baitfish streamerTop
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
MS
Mouse / surface-wake fly
12–16 · Fly
A dependable searching pattern for these waters.
LS
Leech streamer
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
Chironomid pupa
Chironomid pupa
10–14 · Buzzer
Static or slow on a long leader — the staple stillwater chironomid.
Permits & access
Permit required — see local rules.
  • Registration, lake-specific rules, minimum size and gear restrictions reported by official material — verify the current year
  • Conservation-first; no catch-rate language.
What's coming
Plan ahead
5-day outlook
Condition match
73%
Cloud50%
Wind100%
Temp60%

A good match for Lake Shumarinai — most conditions are close to what it fishes best in.

Gallery · 2
  1. Lake Shumarinai 01
    Remote northern lake.
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Taimen late spring → autumn

    Sakhalin taimen (Itou) — conservation-first, catch-and-release only. Species surfaced in prose; not scored. Legal status: guidance_not_permission.

Related guides
Thermal Layers & Troutreading depth and temperatureEuro Nymphingsubsurface methods
Booking & contacts