Lough Cullin Intelligence Report
This intelligence report for Lough Cullin, Co. Mayo is built from analysis of 119 Inland Fisheries Ireland (IFI) reports spanning 13 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 Cullin fishes across the year.
May stands out as the peak month with a 59% positive report rate across 32 reports. A N wind is the most productive direction based on the data.
Key hatches on Lough Cullin include Mayfly (peaks May), Olives (peaks May), Duckfly (peaks March), Sedge (peaks August). The hatch timeline section below shows exactly when each hatch typically begins and peaks, based on first-mention dates across 13 seasons of IFI data.
The most mentioned flies across all seasons are Mayfly, Green Peter, Grey Wulff, Olive, Ginger Dabbler. The full report breaks these down by month, showing which patterns dominate at each stage of the season.
Lough Cullin — 13 years of fishing report data, distilled
Every IFI report mentioning Lough Cullin 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 13 years of data.
S wind produces the best fishing
63% of S wind reports are positive (8 reports) vs 21% on a SW wind.
April delivers the highest catch rates
Average 4.4 fish per rod — the most productive month in the dataset, backed by 20 reports across 13 seasons.
8-10°C is the sweet spot
67% positive reports at 8-10°C air temperature (15 reports). Fishing drops to 41% positive at 14-16°C.
Best reported catch: 10 fish per boat
20 fish from 2 boats on April 23, 2015
What the data tells us about conditions
Historical weather cross-referenced with report sentiment across 13 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 13 seasons.
Month-by-month fishing calendar
What to expect each month. Quality rating and catch data reflect 13 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 | 6 | — | 1.1 | May 22 | May | |
| 2024 | 11 | 2.7 | 0.5 | April 26 | May | |
| 2023 | 19 | 2 | — | April 28 | August | |
| 2022 | 23 | 2.3 | 0.8 | May 2 | March | |
| 2021COVID | 18 | 4.2 | — | May 6 | June | |
| 2019 | 1 | — | — | May 16 | — | |
| 2018 | 1 | — | — | May 16 | — | |
| 2016 | 1 | — | — | June 2 | — | |
| 2015 | 9 | 5.3 | 1.4 | April 30 | May | |
| 2014 | 12 | 3.9 | — | May 8 | May | |
| 2013 | 7 | 3.1 | — | June 6 | May | |
| 2012 | 8 | 4.2 | — | April 12 | April | |
| 2011 | 3 | — | — | — | 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 7 competitions across 4 seasons.
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Voices from the water
Quotes extracted from IFI reports that capture the essence of fishing on Lough Cullin.
great dry fly action
substantial turnout of anglers over weekend
had great fishing on L. Cullin