Regions › South America › Chile
Chile. Growing season October–April, harvest usually March–April. 26 vintages of weather, 2000–2025.
Photo: Tjeerd Wiersma from Amsterdam, Netherlands., CC BY 2.0, via Wikimedia Commons
Over the 30 growing seasons from 1991 to 2020, Colchagua Valley's vines saw on average 1,730 growing degree days between October and April. That puts it in Winkler region III, close in heat and rain to Sonoma County, Maipo Valley and Columbia Valley. In a typical year about 113 mm of rain falls in the growing season, 40 mm of it in March–April.
Since 2000 the warmest season was 2020 (+14% against normal) and the coolest 2010 (-9%). The wettest harvest window was 2004, with 144 mm against a normal 40 mm.
The last 10 vintages (2016–2025) averaged +3% against the 1991–2020 normal, compared with -2% for 2000–2009; 4 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 (1,730 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 (March–April). The line is the normal season total, 113 mm.
Oct 2024–Apr 2025
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 9 of 26 for heat · Winkler III
Oct 2023–Apr 2024
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 22 of 26 for heat · Winkler II
Oct 2022–Apr 2023
Much warmer
Hot months: Dec +2.5° Feb +2.8° Mar +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 3 of 26 for heat · Winkler III
Oct 2021–Apr 2022
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 14 of 26 for heat · Winkler III
Oct 2020–Apr 2021
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 12 of 26 for heat · Winkler III
Oct 2019–Apr 2020
Much warmer
Hot months: Nov +3.0° Dec +2.8° Feb +2.2° Apr +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 1 of 26 for heat · Winkler IV
Oct 2018–Apr 2019
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 6 of 26 for heat · Winkler III
Oct 2017–Apr 2018
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 13 of 26 for heat · Winkler III
Oct 2016–Apr 2017
Much warmer
Hot months: Nov +2.1° Jan +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 2 of 26 for heat · Winkler III
Oct 2015–Apr 2016
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 10 of 26 for heat · Winkler III
Oct 2014–Apr 2015
Much warmer
Hot months: Mar +2.3° Apr +2.5°
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 III
Oct 2013–Apr 2014
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 17 of 26 for heat · Winkler III
Oct 2012–Apr 2013
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 20 of 26 for heat · Winkler II
Oct 2011–Apr 2012
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 7 of 26 for heat · Winkler III
Oct 2010–Apr 2011
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 25 of 26 for heat · Winkler II
Oct 2009–Apr 2010
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 II
Oct 2008–Apr 2009
Warmer
Hot months: Apr +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 III
Oct 2007–Apr 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 8 of 26 for heat · Winkler III
Oct 2006–Apr 2007
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 II
Oct 2005–Apr 2006
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 19 of 26 for heat · Winkler II
Oct 2004–Apr 2005
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 21 of 26 for heat · Winkler II
Oct 2003–Apr 2004
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 16 of 26 for heat · Winkler III
Oct 2002–Apr 2003
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 23 of 26 for heat · Winkler II
Oct 2001–Apr 2002
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 11 of 26 for heat · Winkler III
Oct 2000–Apr 2001
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 18 of 26 for heat · Winkler III
Oct 1999–Apr 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 15 of 26 for heat · Winkler III
| Vintage | GDD | vs normal | Season rain | Harvest rain | Hottest month (mean high) |
|---|---|---|---|---|---|
| 2025 | 1,740 | +1% | 80 mm | 52 mm | January 31.1°C |
| 2024 | 1,630 | -6% | 137 mm | 45 mm | January 30.4°C |
| 2023 | 1,890 | +9% | 78 mm | 52 mm | February 30.9°C |
| 2022 | 1,700 | -2% | 82 mm | 49 mm | January 28.9°C |
| 2021 | 1,730 | -0% | 70 mm | 8 mm | December 28.6°C |
| 2020 | 1,980 | +14% | 29 mm | 6 mm | January 30.9°C |
| 2019 | 1,790 | +3% | 98 mm | 15 mm | January 30.0°C |
| 2018 | 1,700 | -2% | 129 mm | 38 mm | January 28.6°C |
| 2017 | 1,920 | +11% | 119 mm | 41 mm | January 31.5°C |
| 2016 | 1,740 | +1% | 277 mm | 127 mm | February 29.5°C |
| 2015 | 1,870 | +8% | 44 mm | 7 mm | January 30.3°C |
| 2014 | 1,680 | -3% | 42 mm | 23 mm | January 29.4°C |
| 2013 | 1,650 | -5% | 182 mm | 6 mm | January 28.8°C |
| 2012 | 1,790 | +3% | 54 mm | 23 mm | January 29.0°C |
| 2011 | 1,590 | -8% | 183 mm | 90 mm | January 29.0°C |
| 2010 | 1,570 | -9% | 56 mm | 4 mm | January 29.0°C |
| 2009 | 1,860 | +8% | 13 mm | 0 mm | January 30.3°C |
| 2008 | 1,750 | +1% | 87 mm | 65 mm | January 30.1°C |
| 2007 | 1,620 | -6% | 154 mm | 29 mm | January 28.7°C |
| 2006 | 1,660 | -4% | 107 mm | 38 mm | January 28.9°C |
| 2005 | 1,640 | -6% | 136 mm | 24 mm | February 28.6°C |
| 2004 | 1,680 | -3% | 223 mm | 144 mm | January 29.0°C |
| 2003 | 1,630 | -6% | 110 mm | 3 mm | January 29.1°C |
| 2002 | 1,740 | +0% | 78 mm | 43 mm | January 29.2°C |
| 2001 | 1,670 | -3% | 84 mm | 33 mm | January 28.2°C |
| 2000 | 1,690 | -3% | 116 mm | 15 mm | January 29.5°C |
| 1991–2020 | 1,730 | ±6% (1 SD) | 113 mm | 40 mm |
The closest matches on this site by normal heat and season rain. Similar weather is one ingredient; soils, slopes and grapes differ.
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