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Italy · PDO · protected since 1973

Barolo

Barolo is an Italian PDO, protected since 1973. The registered specification allows one variety only, the black grape Nebbiolo, grown within a delimited zone of 200 km².

Delimited area
200 km²
Permitted varieties
1
Max yield
56 hl/ha
Average season GDD
1662

The delimited zone

TurinGenoaAsti100 km
The official boundary, from the EU PDO geospatial inventory (Sci Data 9, 394), shown over its surroundings. Backdrop cartography: Natural Earth (public domain).

What may go in the bottle

The registered specification authorises a single grape variety for these product categories: wine.

The rules of the appellation

Product categoriesWine
Maximum yield56 hl/ha
Maximum harvest8000 kg/ha
Minimum planting density3500 vines/ha
Delimited municipalities11 communes
EU file numberPDO-IT-A1389

Every vintage since 2000, measured

We calculate each growing season (April–October) from the Open-Meteo historical archive, taken at the centre of the appellation. Degree days use the Winkler scale, base 10 °C. It is the same data the textbooks use, simply done for every region and every year.

01000200030002000: 1,503 GDD20002001: 1,554 GDD2002: 1,307 GDD20022003: 1,881 GDD2004: 1,527 GDD2005: 1,517 GDD20052006: 1,661 GDD2007: 1,558 GDD2008: 1,472 GDD2009: 1,692 GDD2010: 1,417 GDD20102011: 1,706 GDD2012: 1,584 GDD2013: 1,505 GDD2014: 1,447 GDD2015: 1,584 GDD20152016: 1,575 GDD2017: 2,021 GDD2018: 1,841 GDD2019: 1,766 GDD2020: 1,731 GDD20202021: 1,763 GDD2022: 2,113 GDD20222023: 1,861 GDD2024: 1,749 GDD2025: 1,872 GDD2025
Growing degree days by vintage. Dashed line: 26-year average (1662).
025050075010002000: 655 mm20002001: 330 mm2002: 713 mm2003: 243 mm20032004: 381 mm2005: 503 mm20052006: 424 mm2007: 412 mm2008: 518 mm2009: 510 mm2010: 561 mm20102011: 335 mm2012: 518 mm2013: 576 mm2014: 492 mm2015: 591 mm20152016: 344 mm2017: 288 mm2018: 856 mm20182019: 742 mm2020: 561 mm20202021: 354 mm2022: 335 mm2023: 722 mm2024: 713 mm2025: 489 mm2025
Growing-season rainfall by vintage, mm. Dashed line: average (506 mm).
VintageGDDRain mm Harvest rain*Frost days35 °C+ days
20001503655 24710
20011554330 9510
20021307713 8310
20031881243 6755
20041527381 10210
20051517503 15210
20061661424 11900
20071558412 10120
20081472518 4010
20091692510 10200
20101417561 16730
20111706335 5600
20121584518 10810
20131505576 12500
20141447492 6600
20151584591 14420
20161575344 10100
20172021288 1505
20181841856 21600
20191766742 12304
20201731561 13411
20211763354 7020
20222113335 3713
20231861722 9002
20241749713 17000
20251872489 7400

*rain in the final 45 days of the season.

Sources. Regulatory data: eAmbrosia, the EU geographical indications register (file PDO-IT-A1389) and the EU wine PDO inventory, Sci Data 9, 394 (2022), CC BY 4.0. Weather: Open-Meteo historical archive (CC BY 4.0). Every number on this page is calculated from the records cited above, and every rule is taken straight from them. Nothing here is machine-written filler.