Spate · Mixed · East / Wicklow, IE

River Vartry

River Vartry — River Vartry, Wicklow, Ireland

A short Wicklow sea-trout river under a strict IFI conservation order — closed for salmon and for sea trout over 40 cm in 2026, with one sea trout of 40 cm or less per day permitted in the open season.

Good · Brown Trout
Hare's Ear Nymph · 12-16
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
90% confidence
What moved it
  • Level0.52 mLast reading 4h ago
  • Water temp17.1°C
  • ClarityClear
Today's fly
Hare's Ear Nymph
Hare's Ear Nymph12-16
Upstream
Conditions on the water
Live gauge
Level
Steady
0.52 m
Last reading 4h ago
Water temp17.1°C
ClarityClear
Weather17°C
WindN 17 km/h
Pressure1014 hPa
Rain · recent0.0 mm
Rain · ahead14.6 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
17°C est.ideal 1016°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
Good — water clarity is right today, though time of day could be better.
Likely species
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 4 with Pro.

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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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
March BrownHatch
2
3
2
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • IFI conservation bye-law (2026): salmon closed; sea trout >40 cm closed; one sea trout of 40 cm or less per day in season
  • Devil's Glen (Coillte) public car park is the practical access
  • Vartry Reservoir closed to angling — Uisce Éireann drinking-water supply
  • State rod licence required.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
  1. River Vartry — River Vartry, Wicklow, Ireland
    River Vartry, Wicklow, Ireland
  2. Terrain map of the venue
    Terrain map
About this water

A short Wicklow sea-trout river under a strict IFI conservation order — closed for salmon and for sea trout over 40 cm in 2026, with one sea trout of 40 cm or less per day permitted in the open season. Worth knowing about for the broader Dublin sea-trout picture, but not the river to plan a trip around. Devil's Glen (Coillte forest car park) is the practical public access; the Vartry Reservoir itself is closed to angling as a Uisce Éireann drinking-water supply. Treat the day as a privilege — hold any fish in the water, get it back quickly, and fish carefully.

Hatches & food

EPA river-invertebrate monitoring on the Vartry confirms mayflies, stoneflies, a broad caddis assemblage, chironomids and blackflies, plus freshwater shrimp and hoglice are all present, indicating a reasonably food-rich freestone rather than one shaped by a single hatch.

  • Mixed
Water quality (WFD)
  • EcologyUnknown
  • ChemicalUnknown
The full read · show the working · for Brown Trout · confidence 90%
How the 73 is built — score × weight = contribution
Temperature64 × 28%17.9
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure70 × 7%4.9
Insect activity67 × 12%8.0
Conditions total= 73
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 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Sea trout 1 May30 SeptemberClosed
Related guides
Casting instructors near here
Booking & contacts