Growing Degree Days Calculator

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View the latest growing degree information for your postcode.

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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
06/10/2024 26.3 °C / 12.6 °C 9.9 198.6
05/10/2024 26.7 °C / 15.6 °C 11.4 188.7
04/10/2024 25 °C / 8.5 °C 6.9 177.3
03/10/2024 20.4 °C / 12.4 °C 5.7 170.3
02/10/2024 17.6 °C / 13.4 °C 5.2 164.6
01/10/2024 22.2 °C / 9.8 °C 5.5 159.4
30/09/2024 18.7 °C / 12.1 °C 5.7 153.9
29/09/2024 18.1 °C / 14 °C 5.8 148.2
28/09/2024 15.1 °C / 12.7 °C 3.8 142.4
27/09/2024 14.2 °C / 10.7 °C 2.4 138.6
26/09/2024 21.7 °C / 7.6 °C 3.5 136.1
25/09/2024 29.5 °C / 16.1 °C 12.8 132.7
24/09/2024 25.1 °C / 11.8 °C 8.6 119.8
23/09/2024 28.1 °C / 8.7 °C 9.4 111.3
22/09/2024 24.9 °C / 7.5 °C 7.3 101.9
21/09/2024 22.1 °C / 7.1 °C 5.7 94.6
20/09/2024 22.8 °C / 7.3 °C 6.1 88.9
19/09/2024 25.3 °C / 7.6 °C 7.4 82.8
18/09/2024 25.7 °C / 4.1 °C 6.9 75.4
17/09/2024 19.9 °C / 5.7 °C 3.8 68.5
16/09/2024 20.7 °C / 0.7 °C 3.3 64.8
15/09/2024 15.7 °C / 5.1 °C 1.5 61.4
14/09/2024 23.7 °C / 6.9 °C 5.2 59.9
13/09/2024 16.3 °C / 9.4 °C 2.1 54.7
12/09/2024 18 °C / 10.5 °C 5.1 52.6
11/09/2024 25 °C / 12.4 °C 8.1 47.5
10/09/2024 20.9 °C / 7.8 °C 5.3 39.4
09/09/2024 24.2 °C / 9.1 °C 6.7 34.1
08/09/2024 25.8 °C / 14.4 °C 8.8 27.4
07/09/2024 21.6 °C / 14.5 °C 7.8 18.6
06/09/2024 28.8 °C / 11.5 °C 10.8 10.8

ERA5T (30 km)

ERA5T is the fifth generation ECMWF reanalysis for the global climate and weather historical data. The spatial resolution of the dataset is around 30km and it is available across global with lag time of 10 days. We gap fill the 10 days duration with numerical weather forecast model called NEMSGLOBAL.
ECMWF periodically uses its models and data assimilation systems to 'reanalyze' archived observations, creating global data sets describing the recent history of the atmosphere, land surface, and oceans.
Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset using the laws of physics.

Weather historical data provided by meteoblue