What is made here
Wine colours
The only colour the rules allow.
Where it is
Cviček in Slovenia
- Latitude
- 45.4°–45.7° N
- Vineyard altitude
- 204 m to 392 m
- Production zone
- 59,129 ha
Covers the same area as
Bela krajina, Belokranjec, Metliška črnina
Worked out from the boundaries (smallest container first). They follow whole communes, so a neighbour sharing a commune can show up here too.
Boundary drawn from whole communes, so it is a little larger than the legal zone. Boundary: Eurac Research PDO inventory (CC0). Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.
01 · What the law says
The rules
Limits on grapes, yields, ripeness and ageing that every wine labelled Cviček must meet.
Blend rules
Cviček light red wine
- 45–75% Žametovka · Main grape
- 15–30% Modra frankinja · Main grape
- 10–25% Kraljevina / Laški rizling / Rumeni plavec · Allowed
- ≤ 10% other listed varieties (Rdeča žlahtnina, Portugalka, Šentlovrenka, Zweigelt, Gamay, Zeleni silvanec, Bela žlahtnina, Beli pinot, Sivi pinot, Chardonnay, Ranina, Ranfol) · Others allowed
- ≥ 75% red varieties · Main grape
Other varieties allowed
Besides the main grapes, the rules allow these varieties in some wines. Grape names link where a profile exists.
26 varieties ·
Bela Zlahtnina, Beli Pinot, Chardonnay, Dišeci Traminec, Gamay, Kerner, Kraljevina, Laški Rizling, Modra Frankinja, Modri Pinot, Portugalka, Radgonska Ranina, Ranfol, Rdeca Zlahtnina, Renski Rizling, Rizvanec, Rumeni Muškat, Rumeni Plavec, Sauvignon Blanc, Sivi Pinot, Traminec, Zametovka, Zeleni Silvanec, Zweigelt, Šentlovrenka, Šipon
In the vineyard and cellar: rules for every wine
210 m
Lowest vineyard allowed
Allowed
Enrichment (chaptalisation)
02 · Climate fingerprint
The climate
The growing season averages 16.4 °C, intermediate on Gregory Jones's scale, with 1,374 growing degree days (Winkler Ib).
The average year 1991–2020, vineyards at about 266 m
Monthly mean, °CRain, mmGrowing season
- Growing-season temperature
- 16.4 °C
- Intermediate · 15–17 °C (Jones)
- Growing degree days
- 1,374
- Region Ib: 1,111–1,388 degree days
- Growing-season rain
- 765 mm
- Of 1,227 mm a year
- Harvest rain
- 234 mm
- September–October
Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 165 m; Vineyard point 2, 208 m; Vineyard point 3, 263 m; Vineyard point 4, 276 m; Vineyard point 5, 418 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 moderately complex terrain; not yet checked against a weather station.
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. IrouléguyVery similarCompared with Cviček: same season warmth, similar rain.
2. Saint-AmourVery similarCompared with Cviček: same season warmth, similar rain.
3. BugeyVery similarCompared with Cviček: 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, 234 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
- 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
- Single document: Cviček (Official Journal C, C/2026/256, 16.1.2026; and the product specification 'SPECIFIKACIJA PROIZVODA- Cviček.doc' from the EU register) · European Union, Official Journal (C series) · EU law (Commission reuse policy)
- Appellation nesting worked out from boundaries (pipeline/build_nesting.py) · Vinous, from the Eurac PDO boundaries · CC0 (source data)
- Climate profiles calculated by Vinous: method
Still to check (3)
- Generated from EU reference data: check against the current product specification.
- From the specification: White varieties must make up 10-25 %. Red grapes are destemmed and macerated for no more than four days at up to 22 °C; stopping fermentation, sulphiting the mash, sweetening and potassium sorbate are not allowed. Total acidity must be 5.5-9.5 g/l. Wine must pass an organoleptic assessment of at least 15.5 points and be placed on the market by the end of the second calendar year after the vintage. The 'natural alcohol' minimum of 8.5 % is listed among the wine's chemical properties. The older national specification (2013) in the register differs from the single document: natural alcohol at least 8 %, titratable acidity 6,0–9,5 g/l, yield up to 8 000 l/ha (80 hl/ha), organoleptic score at least 15, and variety shares of 40–50 % Žametovka (exceptionally 60 %), 10–15 % Kraljevina, 15–20 % Modra frankinja (exceptionally 30 %), up to 10 % Laški rizling and up to 15 % others; existing values are kept. It adds nothing new for empty fields.
- National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.