Lough Conn Intelligence Report
This intelligence report for Lough Conn, Co. Mayo is built from analysis of 199 Inland Fisheries Ireland (IFI) reports spanning 15 seasons (2011–2025). Every data point — from hatch timing to catch rates — is drawn directly from official field reports, giving anglers an evidence-based picture of how Lough Conn fishes across the year.
February stands out as the peak month with a 60% positive report rate across 5 reports. A S wind is the most productive direction based on the data.
Key hatches on Lough Conn include Mayfly (peaks May), Olives (peaks May), Sedge (peaks September), Buzzer (peaks April). The hatch timeline section below shows exactly when each hatch typically begins and peaks, based on first-mention dates across 15 seasons of IFI data.
The most mentioned flies across all seasons are Green Peter, Bibio, Dry Olive, Grey Wulff, Mayfly. The full report breaks these down by month, showing which patterns dominate at each stage of the season.
Lough Conn — 15 years of fishing report data, distilled
Every IFI report mentioning Lough Conn from 2011–2025 — catch data, conditions, hatches, methods, and areas. Patterns that would take a lifetime on the water to learn.
Key findings
The headline patterns that emerge from 15 years of data.
S wind produces the best fishing
63% of S wind reports are positive (16 reports) vs 42% on a NE wind.
June delivers the highest catch rates
Average 3.2 fish per rod — the most productive month in the dataset, backed by 34 reports across 15 seasons.
8-10°C is the sweet spot
71% positive reports at 8-10°C air temperature (28 reports). Fishing drops to 36% positive at <6°C.
Best reported catch: 18 fish per boat
18 fish from 1 boat on June 1, 2022
What the data tells us about conditions
Historical weather cross-referenced with report sentiment across 15 seasons. Based on actual Open-Meteo records, not just what correspondents described.
Hatch timeline
When key hatches are mentioned in reports. Peak months shown in teal. Based on first and last mentions each season across the dataset.
Top flies by period
Patterns named most frequently in positive reports. Ranked by mention count across 15 seasons.
Month-by-month fishing calendar
What to expect each month. Quality rating and catch data reflect 15 seasons of IFI reports. FlyArea
*Catch rates derived from reports where specific numbers were mentioned — not all reports include them. A minimum of 5 reports with catch data is required for a month or season to show a value; “—” means insufficient data, not no fish. Competition catch rates are per boat and tend lower because events run on fixed dates regardless of conditions.
Season-by-season comparison
Each season rated by sentiment analysis across all reports. Sentiment bars show the proportion of excellent, good, moderate, and poor reports.
| Season | Reports | Catch/Rod | Comp/Boat | Sentiment | First Mayfly | Best Month |
|---|---|---|---|---|---|---|
| 2025 | 18 | 1.2 | 0.6 | May 3 | September | |
| 2024 | 15 | 0.9 | 0.4 | April 19 | May | |
| 2023 | 26 | 1.9 | 0.4 | April 28 | September | |
| 2022 | 27 | 3.4 | 0.9 | April 29 | September | |
| 2021COVID | 25 | 1.9 | — | April 28 | April | |
| 2020COVID | 3 | — | — | June 3 | — | |
| 2019 | 1 | — | — | May 16 | — | |
| 2018 | 3 | — | — | May 16 | May | |
| 2017 | 4 | 2.3 | — | May 19 | — | |
| 2016 | 4 | — | 1 | June 2 | — | |
| 2015 | 17 | 3.4 | 1.4 | May 7 | May | |
| 2014 | 23 | 2.5 | — | May 8 | March | |
| 2013 | 11 | 2 | 0.4 | May 23 | May | |
| 2012 | 18 | 2.1 | 0.4 | April 12 | March | |
| 2011 | 4 | — | — | — | September |
Catch/Rod requires 5+ reports with explicit catch numbers for that season. Comp/Boat requires 1+ competition with boat and fish counts. “—” indicates insufficient data, not absence of fish.
Competition catch rates
Average fish per boat from organised competitions — the most reliable catch data, since boat counts are always recorded. Based on 24 competitions across 8 seasons.
3
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5
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Voices from the water
Quotes extracted from IFI reports that capture the essence of fishing on Lough Conn.
great dry fly fishing and boated 18 trout
best trout fishing they had seen in 25 years
some of the best sport of the season