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Growing Degree Days Calculator

View the latest growing degree information for your postcode.

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Learn more about GDD

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
20/05/2022 17.3 °C / 10.4 °C 4 205.5
19/05/2022 17.3 °C / 2.6 °C 2.5 201.5
18/05/2022 18.7 °C / 3.7 °C 2.8 198.9
17/05/2022 19.7 °C / 7.6 °C 4.2 196.1
16/05/2022 22.5 °C / 12.2 °C 7.6 191.9
15/05/2022 23.9 °C / 16.2 °C 9.7 184.4
14/05/2022 24.9 °C / 18.6 °C 10.9 174.6
13/05/2022 21.1 °C / 17.6 °C 9.3 163.7
12/05/2022 19.7 °C / 16.6 °C 8 154.5
11/05/2022 18.6 °C / 15.9 °C 7.4 146.5
10/05/2022 17.1 °C / 15.4 °C 6.3 139.1
09/05/2022 16.8 °C / 11.1 °C 4.6 132.8
08/05/2022 19.3 °C / 4.5 °C 3.8 128.2
07/05/2022 18.2 °C / 5 °C 3 124.4
06/05/2022 18.4 °C / 11.4 °C 5.1 121.4
05/05/2022 21.5 °C / 15.2 °C 7.7 116.4
04/05/2022 22.9 °C / 12.6 °C 8 108.6
03/05/2022 21 °C / 13.1 °C 6.8 100.6
02/05/2022 21 °C / 11.5 °C 6.2 93.8
01/05/2022 19.9 °C / 8.8 °C 5 87.6
30/04/2022 21.1 °C / 14.8 °C 8.6 82.7
29/04/2022 26.2 °C / 17.8 °C 11 74
28/04/2022 22.6 °C / 17.5 °C 9.5 63
27/04/2022 21.5 °C / 17.2 °C 9 53.5
26/04/2022 19.4 °C / 16.2 °C 7.4 44.5
25/04/2022 18 °C / 13.6 °C 6.2 37.1
24/04/2022 18 °C / 12.1 °C 5.6 30.8
23/04/2022 16.9 °C / 14.9 °C 6 25.2
22/04/2022 17.1 °C / 15.4 °C 6.5 19.1
21/04/2022 19 °C / 10.7 °C 5.3 12.7
20/04/2022 20.6 °C / 13.5 °C 7.4 7.4