Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°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 — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
Mayflies- Late March BrownMost likelyLower confidence#12–14 · DunLate-season upland riffle dun, dusk emergence.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
- Angler's CurseAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
Stoneflies
Caddisflies
Caddisflies- Green SedgeMost likelyLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Saddle-case CaddisAlso possibleLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- GrannomAlso possibleNearest relative#14–16 · PupaPupa first, then dries as the adults come off.
Aquatic beetles
Aquatic beetles- Diving beetlesMost likelyLower confidence#8–10–12 · AdultTwitch a beetle pattern along weedy edges at dusk.
Gammarids
Molluscs
- Pond snailsMost likelyLower confidence#10–12–14 · AdultDead-drift or twitch a snail pattern near weed beds.
Oligochaetes
- Aquatic wormsMost likelyLower confidence#12–14–16 · AdultDead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayPeak at 18h
12h(now) — Black Gnat
Stage: On emergersApproach: Emerger or dryActivity: 72%
Also:Autumn Needle Fly64%Iron Blue48%
Peak emergence window8 food groups active
Peak activity at 18h — Caperer (Caperer, 10 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Salmon runRun
1
2
2
2
2
2
1
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
Fly box · Atlantic Salmon
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow9025% weight
- Clarity7520% weight
- Feeding Time8015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 20 October
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
River Deele
Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°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 — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
- Late March BrownMost likelyLower confidence#12–14 · DunLate-season upland riffle dun, dusk emergence.
- Large dark oliveAlso possible#14–16 · EmergerDead-drift the emerger — it's sitting in the film.
- Turkey BrownAlso possibleLower confidence#14–16 · DunSmall spring dun on slower glides and margins.
- Angler's CurseAlso possibleLower confidenceNearest relative#20–22 · SpinnerGo tiny: 20-22 spent spinner, single fly, long tippet.
Caddisflies
- Green SedgeMost likelyLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Saddle-case CaddisAlso possibleLower confidenceNearest relative#16–18 · AdultTiny blackish caddis; fast riffles, early summer.
- Large sedgesAlso possibleNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- GrannomAlso possibleNearest relative#14–16 · PupaPupa first, then dries as the adults come off.
Aquatic beetles
- Diving beetlesMost likelyLower confidence#8–10–12 · AdultTwitch a beetle pattern along weedy edges at dusk.
Molluscs
- Pond snailsMost likelyLower confidence#10–12–14 · AdultDead-drift or twitch a snail pattern near weed beds.
Oligochaetes
- Aquatic wormsMost likelyLower confidence#12–14–16 · AdultDead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayPeak at 18h
12h(now) — Black Gnat
Stage: On emergersApproach: Emerger or dryActivity: 72%
Also:Autumn Needle Fly64%Iron Blue48%
Peak emergence window8 food groups active
Peak activity at 18h — Caperer (Caperer, 10 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Salmon runRun
1
2
2
2
2
2
1
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
Fly box · Atlantic Salmon
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow9025% weight
- Clarity7520% weight
- Feeding Time8015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 20 October
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators