Large Bernese Oberland lake backed by the Eiger, Mönch and Jungfrau, deep and cold and clear. Lake trout, Arctic char, and brown trout. Trolling and fly fishing from boats—the mountain views are as reliable as the fishing.
- Lake
- Limestone
Rules at a glance
- Permit required
How to fish it · for Trout
When
The daddy longlegs are on. Wind-blown Terrestrials may also come into play as the day warms. The ripple is helpful — fish should move onto the feed and a slow-drifted team or single wet will cover water well.
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.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
1
CaenisHatch
2
3
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Silverhorns & LonghornsHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Trout fly box
A compact but high-quality Swiss box covering alpine streams, mountain lakes, and Jura salmonid rivers such as the Doubs.
Permits & access
Permit required — see local rules.
- Bernese lake under Bern rules
- Boat hire is widely available, but check the exact cantonal lake permit structure before fishing.
What's coming
Plan ahead
5-day outlook
Condition match
63%
Cloud50%
Wind100%
Temp25%
A reasonable day here, though temperature isn't quite in the sweet spot.
Water here around 21°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Lake Thun, Bernese Oberland Terrain map
About this water
Why this score
- Wind conditions (ripple) closely match what this water fishes best in.
- Daddy longlegs are in their seasonal window, boosting the chance of targeted feeding.
Directions
Seasons & zones
- Trout 1 March → 31 December
- Char varies_by_canton → varies_by_canton
Alpine char (Saibling) — seasons, minimum sizes, and retention rules are set by the Bern canton's fisheries authority (Amt für Jagd und Fischerei). Different cantons may apply different closed seasons or catch restrictions for char conservation. Always verify locally before targeting char.
- Lake trout 1 March → 31 December
Lake trout (Seeforelle) — seasons and regulations are set by the Bern canton's fisheries authority. Minimum sizes, retention rules, and boat permits vary. Check current regulations with the cantonal office before fishing.
Related guides
Booking & contacts
Lake Thun
Large Bernese Oberland lake backed by the Eiger, Mönch and Jungfrau, deep and cold and clear.
How to fish it · for Trout
When
The daddy longlegs are on. Wind-blown Terrestrials may also come into play as the day warms. The ripple is helpful — fish should move onto the feed and a slow-drifted team or single wet will cover water well.
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.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
1
CaenisHatch
2
3
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Silverhorns & LonghornsHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Trout fly box
A compact but high-quality Swiss box covering alpine streams, mountain lakes, and Jura salmonid rivers such as the Doubs.
Permits & access
Permit required — see local rules.
- Bernese lake under Bern rules
- Boat hire is widely available, but check the exact cantonal lake permit structure before fishing.
What's coming
Plan ahead
5-day outlook
Condition match
63%
Cloud50%
Wind100%
Temp25%
A reasonable day here, though temperature isn't quite in the sweet spot.
Water here around 21°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Lake Thun, Bernese Oberland Terrain map
About this water
Large Bernese Oberland lake backed by the Eiger, Mönch and Jungfrau, deep and cold and clear. Lake trout, Arctic char, and brown trout. Trolling and fly fishing from boats—the mountain views are as reliable as the fishing.
- Lake
- Limestone
Why this score
- Wind conditions (ripple) closely match what this water fishes best in.
- Daddy longlegs are in their seasonal window, boosting the chance of targeted feeding.
Directions
Seasons & zones
- Trout 1 March → 31 December
- Char varies_by_canton → varies_by_canton
Alpine char (Saibling) — seasons, minimum sizes, and retention rules are set by the Bern canton's fisheries authority (Amt für Jagd und Fischerei). Different cantons may apply different closed seasons or catch restrictions for char conservation. Always verify locally before targeting char.
- Lake trout 1 March → 31 December
Lake trout (Seeforelle) — seasons and regulations are set by the Bern canton's fisheries authority. Minimum sizes, retention rules, and boat permits vary. Check current regulations with the cantonal office before fishing.
Related guides
Booking & contacts