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Growing Degree Days Calculator

View the latest growing degree information for your postcode.

Base temperatures used in calculating GDD vary depending on the type of plant or pest that is being monitored. This number represents the temperature at which you will typically begin to see plant or pest growth. The base temperature most often used in calculations 10°C, because it is the temperature when active growth begins for most organisms. . However, some plants or pests can thrive in cooler environments, and in that case, 0°C is best used in calculations. For more information on which base temperature best suits your turf management plan, please contact your local extension service or Syngenta territory manager.

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Growing Degree Days for Sydney NSW Australia
Date Temp: High / Low Daily GDD Cumulative GDD
21/01/2021 26.6 °C / 14.7 °C 10 324.1
20/01/2021 22.6 °C / 15.9 °C 8.4 314.1
19/01/2021 22.6 °C / 17.2 °C 9.8 305.7
18/01/2021 30.6 °C / 17.8 °C 12.9 295.9
17/01/2021 25 °C / 12.3 °C 8.9 283
16/01/2021 27.5 °C / 12.9 °C 10.3 274.1
15/01/2021 29.1 °C / 18.1 °C 12.6 263.7
14/01/2021 35.6 °C / 18.3 °C 15.6 251.1
13/01/2021 28 °C / 19.7 °C 13.1 235.5
12/01/2021 30.4 °C / 16.9 °C 13.5 222.4
11/01/2021 27.1 °C / 17.2 °C 11.5 208.9
10/01/2021 26.6 °C / 14.3 °C 10.5 197.3
09/01/2021 22.6 °C / 16.4 °C 8.9 186.8
08/01/2021 18.9 °C / 14.7 °C 7 178
07/01/2021 19.8 °C / 15.4 °C 8.1 171
06/01/2021 20.7 °C / 17.6 °C 9.4 162.9
05/01/2021 26.7 °C / 19.8 °C 13.1 153.5
04/01/2021 23.1 °C / 20 °C 11.5 140.4
03/01/2021 21.3 °C / 18.6 °C 10 128.8
02/01/2021 19.6 °C / 18.2 °C 8.8 118.9
01/01/2021 20 °C / 17 °C 8.4 110.1
31/12/2020 20.8 °C / 17.6 °C 9.2 101.8
30/12/2020 21 °C / 17.9 °C 9.3 92.5
29/12/2020 20.1 °C / 16.1 °C 8 83.2
28/12/2020 32.4 °C / 16.5 °C 12.3 75.2
27/12/2020 31 °C / 16.6 °C 13.2 63
26/12/2020 21.4 °C / 17.7 °C 9.3 49.7
25/12/2020 19.7 °C / 16.8 °C 7.9 40.4
24/12/2020 27.2 °C / 14.5 °C 10.8 32.5
23/12/2020 24.7 °C / 13.7 °C 9.4 21.7
22/12/2020 28.1 °C / 18.8 °C 12.2 12.2