Tributary of the Mondego near Coimbra with wild brown trout in mixed geology water that varies in clarity. Spate-dependent—fishes best after rain when levels are up. Dry fly and nymph work in spring and early summer.
- Mixed
Rules at a glance
- Free fishing
- Fly only
A side-water session, not the main event
Low and clear — careful approach country. Long leader, small flies, slower casts.
75% confidence in this read
Live now
Conditions on the water
Trends shown where the gauge supports them
Level
Dry recently
No gauge reading
Water temp
6.6°C
Estimated
Clarity
Clear
Air temp
6°C
Wind
W 11 km/h
Light breeze
Pressure
1019 hPa
Rain · 48h
0.3 mm
No meaningful rain
Rain · ahead
1.0 mm
No meaningful rain · next 48h
Live readings — water temperature is an estimate where the gauge does not record it.
How to fish · for brown trout
The brief
When · where · method · kit
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
Fair conditions. Clarity is favourable (95), Prey activity is weakest (24).
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
4 patterns from this venue's curated pack
Detail · next 12h
Water temperature & rain
The two readings most likely to move the verdict
Water temperature for brown trout
Cool — slow7°C est.ideal 10–16°C
0°14°28°
Evidence
Why today scores what it does
6 factors, signed
- Temperature4428% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time5013% weight
- Pressure807% weight
- Prey Activity2412% weight
About this water
Ceira, end to end
Field guide · contributor-editedCeira · about
What this water is
Background · character · contributors
About this water
Ceira · directions
How to get to the water
Directions
Ceira · zones
Where the rules change
Seasons · zones · per-species rules
Seasons & zones
- Trout1 March → 31 July
Ceira · permits
Licences, sorteo, the rules
Permits & access
Permit required — see local rules.
- Licença de Pesca Desportiva (Portuguese fishing license)
- Regional variation; consult local authorities.
Ceira
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Tributary of the Mondego near Coimbra with wild brown trout in mixed geology water that varies in clarity.
Species
A side-water session, not the main event
Low and clear — careful approach country. Long leader, small flies, slower casts.
75% confidence in this read
Water temperature for brown trout
Cool — slow7°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
- Temperature4428% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time5013% weight
- Pressure807% weight
- Prey Activity2412% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
6.6°C
Estimated
Clarity
Clear
Air temp
6°C
Wind
W 11 km/h
Light breeze
Pressure
1019 hPa
Rain · 48h
0.3 mm
No meaningful rain
Rain · ahead
1.0 mm
No meaningful rain · next 48h
Live readings — water temperature is an estimate where the gauge does not record it.
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
Fair conditions. Clarity is favourable (95), Prey activity is weakest (24).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Gallery · 1
Terrain map
Permits & access
Permit required — see local rules.
- Licença de Pesca Desportiva (Portuguese fishing license)
- Regional variation; consult local authorities.
Directions
About this water
Tributary of the Mondego near Coimbra with wild brown trout in mixed geology water that varies in clarity. Spate-dependent—fishes best after rain when levels are up. Dry fly and nymph work in spring and early summer.
- Mixed
Seasons & zones
- Trout1 March → 31 July
Other water nearby · 3
Booking & contacts