Bordeaux commentator Bill Blatch provides this compendium of statistics on weather and picking dates to complement Blatch on Bordeaux 2017 – the vines and Blatch on Bordeaux 2017 – the wines

The year’s monthly rainfall and temperatures

Rainfall (mm) Cumul min temp (ºC) Cumul max temp (ºC) Sun hours
Winter 11/16 86 -9% 7.1 +2 13.8 +0.7
12/16 13 -77% 4.2 +1.3 12.1 +2.2
01/17 28 -72% 0.7 -1.6 8.6 -0.8
02/17 75 -12% 5.5 +2.4 4.1 +2.9
03/17 65 -15% 7.8 +3.9 16.6 +2.9
Total 267 -21% +1.6 +1.6
Spring 04/17 22 -70% 6.8 +0.3 19.5 +3.2 281 +48%
05/17 52 -33% 12.7 +3.2 23.7 +4.0 271 +29%
06/17 137 +144% 16.2 +3.8 27.2 +4.0 268 +11%
Total 211 +1.3 +3.7 +29%
Summer 07/17 28 -44% 17.1 +1.3 26.4 -0.5 193 -22%
08/17 30 -46% 16.1 +0.4 28.0 +0.9 267 +10%
Total 58 -45% 16.6 +0.9 27.2 +0.2 460 -11%
Autumn 09/17 72 -14% 12.5 -0.4 22.2 -1.8 174 -14%
10/17 13 -86% 11.5 +1.1 21.2 +1.8 184 +26%
Total 85 -48% +0.8 = +20%

Figures are as registered at Mérignac.


Diary of the 2017 harvest

Date Temp (ºC) Weather Rainfall (mm) Harvesting dates
Dry white Merlot Cabs Sauternes
August
28 M 17–36 s
29 Tu 21–31 s
30 W 19–25 c
31 Th 19–25 c
September (norm 12.2–23.8 ºC)
01 F 10–21 s/sh 4
02 Sa 12–23 s
03 Su 12–25 s/sh 3
04 M 15–26 s/sh 1
05 Tu 16–24 c/sh 1
06 W 14–23 c
07 Th 16–21 cI
08 F 16–21 r 16
09 Sa 14–21 sh/c 3
10 Su 11–21 sh/c 4
11 M 15–27 sh/c 3
12 Tu 11–21 s/sh 3
13 W 16–22 sh/c 6
14 Th 13–20 s/sh 2
15 F 11–19 s/sh 4
16 Sa 10–17 r/c 12
17 Su 11–17 c/sh 3
18 M 13–20 s/c √√
19 Tu 8–20 s √√
20 W 7–21 s √√
21 Th 9–25 s √√
22 F 13–22 c/s √√
23 Sa 11–25 s √√
24 Su 12–28 s/sh 1 √√
25 M 10–22 s/sh √√ √√
26 Tu 12–21 s/dr √√ √√
27 W 12–26 s √√
28 Th 12–27 s √√
29 F 15–27 s/sh 2 √√
30 Sa 14–20 sh/c 2 √√
October (norm 10.8–19.4 ºC)
01 Su 13–19 c/sh 3 √√
02 M 18–21 sh/c 1 √√ √√
03 Tu 18–24 c/sh 1 √√ √√
04 W 11–22 s √√ √√
05 Th 11–23 s/sh 1 √√ √√
06 F 13–19 s √√ √√
07 Sa 6–19 s √√
08 Su 6–19 c/s √√
09 M 10–20 c √√
10 Tu 12–22 c/s √√
11 W 9–26 s √√
12 Th 11–21 s √√
13 F 10–25 s √√
14 Sa 11–25 c/s
15 Su 15–27 s
16 M 16–29 s
17 Tu 15–25 s/sh 1
18 W 16–22 c/sh 3
19 Th 13–20 c
20 F 14–21 s

Figures are as at the met station in Mérignac.
Double ticks indicate the main days of harvesting.
c = cloud, f = fog, sh = showers, s = sun, r = rain, dr = drizzle

 

Source: https://www.jancisrobinson.com/articles/blatch-on-bordeaux-2017-the-stats

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