What is made here
Wine colours
Colours the rules allow. Pick a colour to filter the rules and grapes below.
Where it is
Irouléguy in France
- Latitude
- 43.0°–43.3° N
- Vineyard altitude
- 171 m to 356 m
- Delimited vineyard land
- 1,315 ha
The delimited vineyard parcels themselves, so the shape is patchy: only land within them may grow the wine. Boundary: INAO parcel delimitation (Licence Ouverte); nearby parcels drawn as one block, with less detail for larger appellations. Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.
Showing every colour The colour filter changes the rules and grapes. Climate, vintages and soils describe the vineyards, so they stay the same.
01 · What the law says
The rules
Limits on grapes, yields, ripeness and ageing that every wine labelled Irouléguy must meet.
Blend rules
Irouléguy rouge
- ≥ 50% cabernet franc / tannat · Main grape
- ≤ 90% cabernet franc / tannat N (each) · Main grape
- – Cabernet Sauvignon · Allowed
; release from 15 February of the year after the harvest.
Blend rules
Irouléguy rosé
- ≥ 90% cabernet franc / cabernet sauvignon / tannat · Main grape
- ≤ 10% courbu / gros manseng / petit courbu / petit manseng · Allowed
; release from 15 January of the year after the harvest.
Other varieties allowed
Besides the main grapes, the rules allow these varieties in some wines. Grape names link where a profile exists.
1 varieties · Irouléguy, Irouléguy rouge, Irouléguy rosé
4 varieties · Irouléguy
Courbu, Gros Manseng, Petit Courbu, Petit Manseng
In the vineyard and cellar: rules for every wine
4,000
Vines per hectare, minimum
Training
Systems allowed
taille Guyot simple; Guyot double; cordon de Royat
Permitted
Irrigation
02 · Climate fingerprint
The climate
The growing season averages 16.3 °C, intermediate on Gregory Jones's scale, with 1,350 growing degree days (Winkler Ib).
The average year 1991–2020, vineyards at about 292 m
Monthly mean, °CRain, mmGrowing season
- Growing-season temperature
- 16.3 °C
- Intermediate · 15–17 °C (Jones)
- Growing degree days
- 1,350
- Region Ib: 1,111–1,388 degree days
- Growing-season rain
- 809 mm
- Of 1,405 mm a year
- Harvest rain
- 225 mm
- September–October
Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 365 m; Vineyard point 2, 282 m; Vineyard point 3, 351 m; Vineyard point 4, 175 m; Vineyard point 5, 285 m), moved to each point's height from the model's terrain. Indices that need daily data are not captured yet. How the climate figures are made.
Lower confidence:Monthly reanalysis in complex terrain (height corrections up to 2.9 °C); absolute values may be several degrees out, year-to-year changes are more reliable.
Closest climates in the database
Picked by the data, not by hand: the profiles nearest on season warmth (counted twice), degree days, rain, ripening-month nights and day–night range. Neighbours within 30 km are left out, as they share the same weather.
1. BugeyVery similarCompared with Irouléguy: same season warmth, similar rain.
2. BelokranjecVery similarCompared with Irouléguy: same season warmth, similar rain.
3. Metliška črninaVery similarCompared with Irouléguy: same season warmth, similar rain.
Growing-season temperature
Growing degree days
Growing-season rain
03 · Year by year
35 vintages
Each column is one growing season: heat above or below the 1991–2020 average, and rain at harvest. Pick a year for the details.
Warmer than averageCooler than averageHarvest rain (Sep–Oct)Average harvest rain, 225 mm
2025
- Growing-season temp.
- Growing degree days
- Harvest rain
- Growing-season rain
- September nights
- Hot days and frosts
Seasons are labelled by harvest year (April–October). Year-to-year changes from ERA5-Land; tested against station records in Alto Adige (r = 0.94 for season temperature at Bolzano). Rain varies more locally, so treat single-season rain with some caution. Vintage ratings, harvest dates and frost or hail events have places in the data model but are not loaded yet.
04 · Where the numbers come from
Sources
- A geospatial inventory of regulatory information for wine protected designations of origin in Europe · Candiago et al., Scientific Data 9, 394 (2022); Eurac Research · CC0
- Quality wines in Italy and France: a dataset of PDO specifications · figshare 25393261 · CC BY 4.0
- ERA5-Land monthly averaged data (reanalysis-era5-land-monthly-means) · Copernicus Climate Change Service (C3S), Climate Data Store · CC BY 4.0 (Copernicus licence)
- OpenStreetMap vineyard areas (landuse=vineyard), from Geofabrik country extracts · OpenStreetMap contributors · ODbL 1.0
- Copernicus DEM GLO-90 (AWS open data tiles) · European Space Agency / Copernicus · Copernicus DEM licence
- Cahier des charges: Irouléguy (Cahier des charges de l’appellation d’origine contrôlée Irouléguy, homologué par arrêté du 27 février 2024, publié le 29 février 2024. - BO n°10 du 7 mars 2024) · Ministère de l'Agriculture (Bulletin officiel), as linked by INAO · Official act
- Délimitation parcellaire des AOC viticoles de l'INAO · Institut national de l'origine et de la qualité (INAO), via data.gouv.fr · Licence Ouverte / Open Licence (Etalab)
- Climate profiles calculated by Vinous: method
Still to check (3)
- Generated from EU reference data: check against the current product specification.
- From the specification: The register lists only 'Irouléguy'; the text sets separate white, red and rosé rules, so red and rosé are added. Maximum load is 9 t/ha for gros manseng and tannat and 8.5 t/ha for other varieties (8 t/ha if irrigated), and minimum grape sugar is 189 g/l for tannat and 180 g/l for others, so no single figure is given for red and rosé; red residual sugar is at most 3 g/l (4 g/l above 14% natural alcohol). Hand harvest is compulsory; whites must blend at least two varieties; the 90% rosé and 50% red principal-variety minimums apply to the holding's vineyard (the red one also to the blend). The section IX in the source is numbered XI.
- National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.