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Growing Degree Days

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View the latest growing degree information for your post code below or sign up for individual email alerts. Questions about how to use degree days on your operation? Learn more about how this tool can help you.

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 USA calculations is 10°C, because it is the temperature when active growth begins for most organisms. However, in the UK’s cooler environments many turf managers use 6°C, occasionally 0°C is used as the base temperature. For more information on which base temperature best suits your turf management plan, please contact your local Syngenta contact.

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Growing Degree Days for Hong Kong
Total GDD for the date range of 05/06/2023 - 06/05/2023 : 479.2
Date Temp: High / Low Daily GDD YTD GDD
05/06/2023 28 °C / 27.1 °C 17.5 1574.1
04/06/2023 28.4 °C / 27.7 °C 18.1 1556.6
03/06/2023 28.7 °C / 27.9 °C 18.2 1538.5
02/06/2023 29.5 °C / 27.7 °C 18.3 1520.2
01/06/2023 28.8 °C / 28 °C 18.4 1501.9
31/05/2023 29.6 °C / 28.5 °C 19 1483.5
30/05/2023 29.7 °C / 27.3 °C 18.6 1464.5
29/05/2023 27.3 °C / 25.6 °C 16.3 1446
28/05/2023 26.1 °C / 24.4 °C 15.6 1429.7
27/05/2023 26.6 °C / 24.7 °C 15.3 1414.1
26/05/2023 26.1 °C / 24.8 °C 15.2 1398.8
25/05/2023 25.4 °C / 25.1 °C 15.2 1383.6
24/05/2023 25.4 °C / 24.1 °C 14.5 1368.4
23/05/2023 27.2 °C / 24.7 °C 16.4 1353.8
22/05/2023 27.3 °C / 26.3 °C 16.8 1337.4
21/05/2023 27.1 °C / 26.2 °C 16.4 1320.7
20/05/2023 26.6 °C / 25.5 °C 15.8 1304.2
19/05/2023 26.1 °C / 25.6 °C 15.8 1288.4
18/05/2023 25.8 °C / 25.5 °C 15.7 1272.6
17/05/2023 25.5 °C / 23.7 °C 14.4 1256.9
16/05/2023 24.5 °C / 23 °C 13.4 1242.5
15/05/2023 23.5 °C / 22.1 °C 12.9 1229.1
14/05/2023 23 °C / 21.5 °C 12.1 1216.2
13/05/2023 24.4 °C / 22.4 °C 13.1 1204.2
12/05/2023 23.7 °C / 23 °C 13.3 1191
11/05/2023 23.5 °C / 22.5 °C 12.9 1177.7
10/05/2023 23.2 °C / 22.6 °C 12.8 1164.8
09/05/2023 23.3 °C / 20.5 °C 12 1152.1
08/05/2023 26.1 °C / 22.9 °C 14.4 1140
07/05/2023 26.6 °C / 25.5 °C 15.7 1125.6
06/05/2023 25.7 °C / 24.7 °C 15 1109.9