Regions › Europe › Italy
Italy. Growing season April–October, harvest usually September–October. 26 vintages of weather, 2000–2025.
Photo: Megan Mallen, CC BY 2.0, via Wikimedia Commons
Over the 30 growing seasons from 1991 to 2020, Piedmont (Langhe)'s vines saw on average 1,950 growing degree days between April and October. That puts it in Winkler region IV, close in heat and rain to Languedoc, Margaret River and Kakheti. In a typical year about 379 mm of rain falls in the growing season, 134 mm of it in September–October.
Since 2000 the warmest season was 2022 (+27% against normal) and the coolest 2002 (-10%). The wettest harvest window was 2024, with 236 mm against a normal 134 mm.
The last 10 vintages (2016–2025) averaged +10% against the 1991–2020 normal, compared with +2% for 2000–2009; 8 of those 10 seasons were warmer than normal by more than 3%.
Growing degree days (base 10°C) for each season. The dashed line is the 1991–2020 normal (1,950 GDD) and the shaded band one standard deviation either side: about two years in three fall inside it.
Full bar: rain over the whole growing season. Dark part: rain in the harvest window (September–October). The line is the normal season total, 379 mm.
Apr–Oct 2025
Warmer
Hot months: Jun +3.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 10 of 26 for heat · Winkler IV
Apr–Oct 2024
Near normal
Hot months: Aug +2.0°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 16 of 26 for heat · Winkler IV
Apr–Oct 2023
Much warmer
Hot months: Apr +2.0° Aug +2.4° Sep +3.0° Oct +4.5°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 2 of 26 for heat · Winkler V
Apr–Oct 2022
Much warmer
Hot months: May +2.5° Jun +4.3° Jul +3.8° Aug +2.4° Oct +4.5°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 1 of 26 for heat · Winkler V
Apr–Oct 2021
Warmer
Hot months: Jun +2.1° Sep +2.3°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 11 of 26 for heat · Winkler IV
Apr–Oct 2020
Warmer
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 12 of 26 for heat · Winkler IV
Apr–Oct 2019
Warmer
Hot months: Jun +2.6°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 7 of 26 for heat · Winkler IV
Apr–Oct 2018
Much warmer
Hot months: Sep +2.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 5 of 26 for heat · Winkler IV
Apr–Oct 2017
Much warmer
Hot months: Jun +2.9° Aug +2.5° Oct +4.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 3 of 26 for heat · Winkler IV
Apr–Oct 2016
Near normal
Hot months: Sep +2.3°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 15 of 26 for heat · Winkler IV
Apr–Oct 2015
Warmer
Hot months: Jul +2.9°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 13 of 26 for heat · Winkler IV
Apr–Oct 2014
Near normal
Hot months: Oct +2.0°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 22 of 26 for heat · Winkler III
Apr–Oct 2013
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 21 of 26 for heat · Winkler III
Apr–Oct 2012
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 18 of 26 for heat · Winkler IV
Apr–Oct 2011
Much warmer
Hot months: Apr +3.2° May +3.4° Sep +3.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 6 of 26 for heat · Winkler IV
Apr–Oct 2010
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 25 of 26 for heat · Winkler III
Apr–Oct 2009
Warmer
Hot months: May +2.1°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 8 of 26 for heat · Winkler IV
Apr–Oct 2008
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 23 of 26 for heat · Winkler III
Apr–Oct 2007
Near normal
Hot months: Apr +3.5°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 17 of 26 for heat · Winkler IV
Apr–Oct 2006
Warmer
Hot months: Jul +2.8°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 9 of 26 for heat · Winkler IV
Apr–Oct 2005
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 20 of 26 for heat · Winkler IV
Apr–Oct 2004
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 24 of 26 for heat · Winkler III
Apr–Oct 2003
Much warmer
Hot months: Jun +4.8° Aug +4.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 4 of 26 for heat · Winkler IV
Apr–Oct 2002
Much cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 26 of 26 for heat · Winkler III
Apr–Oct 2001
Near normal
Hot months: Oct +2.7°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 14 of 26 for heat · Winkler IV
Apr–Oct 2000
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 19 of 26 for heat · Winkler IV
| Vintage | GDD | vs normal | Season rain | Harvest rain | Hottest month (mean high) |
|---|---|---|---|---|---|
| 2025 | 2,070 | +6% | 357 mm | 77 mm | June 29.1°C |
| 2024 | 1,990 | +2% | 525 mm | 236 mm | August 30.3°C |
| 2023 | 2,340 | +20% | 410 mm | 68 mm | August 30.7°C |
| 2022 | 2,480 | +27% | 278 mm | 59 mm | July 32.2°C |
| 2021 | 2,050 | +5% | 244 mm | 63 mm | August 28.9°C |
| 2020 | 2,040 | +5% | 372 mm | 114 mm | August 29.3°C |
| 2019 | 2,090 | +7% | 435 mm | 160 mm | July 29.8°C |
| 2018 | 2,160 | +11% | 555 mm | 181 mm | August 29.0°C |
| 2017 | 2,220 | +14% | 184 mm | 47 mm | August 30.8°C |
| 2016 | 2,000 | +2% | 301 mm | 107 mm | July 29.4°C |
| 2015 | 2,030 | +4% | 441 mm | 150 mm | July 31.3°C |
| 2014 | 1,930 | -1% | 378 mm | 75 mm | July 25.8°C |
| 2013 | 1,930 | -1% | 444 mm | 112 mm | July 28.9°C |
| 2012 | 1,980 | +1% | 406 mm | 170 mm | August 29.7°C |
| 2011 | 2,140 | +10% | 254 mm | 68 mm | August 30.0°C |
| 2010 | 1,810 | -7% | 447 mm | 146 mm | July 29.4°C |
| 2009 | 2,090 | +7% | 376 mm | 108 mm | August 29.6°C |
| 2008 | 1,910 | -2% | 390 mm | 83 mm | August 28.2°C |
| 2007 | 1,990 | +2% | 317 mm | 79 mm | July 29.3°C |
| 2006 | 2,070 | +6% | 304 mm | 196 mm | July 31.2°C |
| 2005 | 1,950 | -0% | 377 mm | 165 mm | July 28.7°C |
| 2004 | 1,890 | -3% | 300 mm | 97 mm | August 28.2°C |
| 2003 | 2,190 | +12% | 206 mm | 75 mm | August 32.5°C |
| 2002 | 1,760 | -10% | 537 mm | 118 mm | June 26.6°C |
| 2001 | 2,010 | +3% | 282 mm | 90 mm | August 29.6°C |
| 2000 | 1,960 | +1% | 492 mm | 200 mm | August 27.7°C |
| 1991–2020 | 1,950 | ±7% (1 SD) | 379 mm | 134 mm |
The closest matches on this site by normal heat and season rain. Similar weather is one ingredient; soils, slopes and grapes differ.
