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Australia. Growing season October–April, harvest usually February–March. 26 vintages of weather, 2000–2025.
Photo: Lasthib, CC BY-SA 4.0, via Wikimedia Commons
Over the 30 growing seasons from 1991 to 2020, Margaret River's vines saw on average 1,920 growing degree days between October and April. That puts it in Winkler region III, close in heat and rain to Barossa Valley, McLaren Vale and Languedoc. In a typical year about 243 mm of rain falls in the growing season, 51 mm of it in February–March.
Since 2000 the warmest season was 2011 (+14% against normal) and the coolest 2006 (-16%). The wettest harvest window was 2021, with 159 mm against a normal 51 mm.
The last 10 vintages (2016–2025) averaged +1% against the 1991–2020 normal, compared with -3% 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 (1,920 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 (February–March). The line is the normal season total, 243 mm.
Oct 2024–Apr 2025
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 5 of 26 for heat · Winkler IV
Oct 2023–Apr 2024
Much warmer
Hot months: Nov +3.1°
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
Oct 2022–Apr 2023
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 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 10 of 26 for heat · Winkler IV
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 11 of 26 for heat · Winkler IV
Oct 2019–Apr 2020
Warmer
Hot months: Dec +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 6 of 26 for heat · Winkler IV
Oct 2018–Apr 2019
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 24 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 16 of 26 for heat · Winkler III
Oct 2016–Apr 2017
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 III
Oct 2015–Apr 2016
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 IV
Oct 2014–Apr 2015
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 2013–Apr 2014
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 9 of 26 for heat · Winkler IV
Oct 2012–Apr 2013
Much 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 4 of 26 for heat · Winkler IV
Oct 2011–Apr 2012
Much warmer
Hot months: Jan +2.4°
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 IV
Oct 2010–Apr 2011
Much warmer
Hot months: Feb +3.0° Mar +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 1 of 26 for heat · Winkler IV
Oct 2009–Apr 2010
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 2008–Apr 2009
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 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 15 of 26 for heat · Winkler III
Oct 2006–Apr 2007
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 2005–Apr 2006
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 2004–Apr 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 III
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 19 of 26 for heat · Winkler III
Oct 2002–Apr 2003
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 2001–Apr 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 23 of 26 for heat · Winkler III
Oct 2000–Apr 2001
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 III
Oct 1999–Apr 2000
Warmer
Hot months: Dec +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 8 of 26 for heat · Winkler IV
| Vintage | GDD | vs normal | Season rain | Harvest rain | Hottest month (mean high) |
|---|---|---|---|---|---|
| 2025 | 2,040 | +7% | 236 mm | 55 mm | January 28.4°C |
| 2024 | 2,140 | +12% | 58 mm | 8 mm | February 28.3°C |
| 2023 | 1,850 | -3% | 227 mm | 24 mm | February 27.8°C |
| 2022 | 1,970 | +3% | 231 mm | 39 mm | February 28.7°C |
| 2021 | 1,970 | +3% | 410 mm | 159 mm | January 28.9°C |
| 2020 | 2,030 | +6% | 241 mm | 93 mm | February 28.5°C |
| 2019 | 1,750 | -9% | 264 mm | 40 mm | February 26.8°C |
| 2018 | 1,910 | -0% | 206 mm | 30 mm | January 26.8°C |
| 2017 | 1,740 | -9% | 262 mm | 135 mm | January 26.4°C |
| 2016 | 2,020 | +6% | 307 mm | 54 mm | January 28.1°C |
| 2015 | 1,910 | -0% | 270 mm | 87 mm | February 28.1°C |
| 2014 | 2,000 | +5% | 155 mm | 41 mm | January 28.1°C |
| 2013 | 2,080 | +8% | 240 mm | 44 mm | February 29.3°C |
| 2012 | 2,170 | +13% | 242 mm | 21 mm | January 29.6°C |
| 2011 | 2,190 | +14% | 300 mm | 6 mm | February 30.4°C |
| 2010 | 1,930 | +1% | 206 mm | 27 mm | February 27.9°C |
| 2009 | 1,850 | -4% | 220 mm | 41 mm | January 27.6°C |
| 2008 | 1,930 | +1% | 289 mm | 72 mm | February 29.0°C |
| 2007 | 1,930 | +1% | 265 mm | 40 mm | February 27.0°C |
| 2006 | 1,620 | -16% | 293 mm | 29 mm | February 26.5°C |
| 2005 | 1,870 | -2% | 263 mm | 90 mm | March 26.9°C |
| 2004 | 1,880 | -2% | 174 mm | 15 mm | February 27.6°C |
| 2003 | 1,930 | +1% | 308 mm | 63 mm | February 27.3°C |
| 2002 | 1,760 | -8% | 216 mm | 19 mm | February 27.0°C |
| 2001 | 1,880 | -2% | 102 mm | 7 mm | January 26.5°C |
| 2000 | 2,010 | +5% | 363 mm | 69 mm | January 28.2°C |
| 1991–2020 | 1,920 | ±6% (1 SD) | 243 mm | 51 mm |
The closest matches on this site by normal heat and season rain. Similar weather is one ingredient; soils, slopes and grapes differ.
