Large River · Volcanic · South Iceland

Þjórsá

A fly angler stands on volcanic rocks casting into the wide, powerful rapids of the Thjorsa river in Iceland, with green hills in the background.
Prime · Atlantic Salmon
Sunray Shadow · tube 3 6cm
Primelive now
Prime conditions — go now
Low and clear — careful approach country. Cover the water properly, fish each lie once.
85% confidence
What moved it
  • LevelLight rain recentlyNo gauge reading
  • Water temp13.9°C
  • ClarityClear
Today's fly
Sunray Shadow
Sunray Shadowtube 3 6cm
Long-water tubes carry well across the broad Þjórsá glides. Strip-back is the trigger when fish follow.
Conditions on the water
Estimate
Level
Light rain recently
No gauge reading
Water temp13.9°C
ClarityClear
Weather13°C
WindNW 15 km/h
Pressure1005 hPa
Rain · recent9.1 mm
Rain · ahead4.5 mm

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

Water temperature for Atlantic Salmon
Ideal
14°C est.ideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though river flow could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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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
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
Atlantic Salmon fly box
Permits & access
Permit required — see local rules.
  • Major nationwide salmon river
  • Permits via local operators and clubs
  • Some beats less pressured than famous rivers.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Eystri-Rangá
20 km
Salmon · Sea trout · Brown trout
Vestari-Rangá
20 km
Salmon · Sea trout
Tungufljót
33 km
Sea trout
Vatnamót
36 km
Sea trout
Fossalár
41 km
Sea trout · Char
Gallery · 3
  1. A fly angler stands on volcanic rocks casting into the wide, powerful rapids of the Thjorsa river in Iceland, with green hills in the background.
    Salmon Fishing on the River Thjorsa, Iceland
  2. Photo of Þjórsá
    Þjórsá
  3. Terrain map of the venue
    Terrain map
Why this score · for Atlantic Salmon
  • Temperature10030% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time8515% weight
  • Pressure8510% weight
Related guides
Atlantic Salmonsalmon tacticsEuro Nymphingsubsurface methods
Booking & contacts
Permits & access