Lough Mask Intelligence Report
This intelligence report for Lough Mask, Co. Mayo is built from analysis of 151 Inland Fisheries Ireland (IFI) reports spanning 14 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 Mask fishes across the year.
March stands out as the peak month with a 92% positive report rate across 13 reports. A W wind is the most productive direction based on the data.
Key hatches on Lough Mask include Mayfly (peaks May), Olives (peaks May), Buzzer (peaks May), Sedge (peaks July). The hatch timeline section below shows exactly when each hatch typically begins and peaks, based on first-mention dates across 14 seasons of IFI data.
The most mentioned flies across all seasons are Mayfly, Dry Olive, Olive, Green Peter, Green Dabbler. The full report breaks these down by month, showing which patterns dominate at each stage of the season.
Lough Mask — 14 years of fishing report data, distilled
Every IFI report mentioning Lough Mask 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 14 years of data.
SE wind produces the best fishing
100% of SE wind reports are positive (7 reports) vs 48% on a NW wind.
June delivers the highest catch rates
Average 4 fish per rod — the most productive month in the dataset, backed by 14 reports across 14 seasons.
6-8°C is the sweet spot
81% positive reports at 6-8°C air temperature (26 reports). Fishing drops to 48% positive at 12-14°C.
Best reported catch: 8.5 fish per boat
34 fish from 4 boats on June 13, 2013
What the data tells us about conditions
Historical weather cross-referenced with report sentiment across 14 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 14 seasons.
Month-by-month fishing calendar
What to expect each month. Quality rating and catch data reflect 14 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 | 1 | — | — | — | — | |
| 2024 | 5 | — | — | — | March | |
| 2023 | 2 | — | — | May 11 | — | |
| 2022 | 2 | — | — | — | — | |
| 2021COVID | 1 | — | — | May 14 | — | |
| 2019 | 13 | 1 | 0.9 | May 2 | June | |
| 2018 | 10 | 4.3 | 0.2 | May 2 | April | |
| 2017 | 18 | 2.1 | 0.8 | April 27 | March | |
| 2016 | 21 | 2.7 | 2.7 | May 11 | March | |
| 2015 | 21 | 3.5 | 7.2 | April 30 | April | |
| 2014 | 12 | 3.3 | 2.7 | May 8 | April | |
| 2013 | 20 | 3.1 | 0.9 | May 23 | July | |
| 2012 | 23 | 3.1 | 4.1 | May 10 | February | |
| 2011 | 2 | — | — | — | 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 14 competitions across 8 seasons.
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Voices from the water
Quotes extracted from IFI reports that capture the essence of fishing on Lough Mask.
Mask is fishing exceptionally well
fish of a lifetime
Fish of a lifetime