Mango Heat Sum Instructions

The Heat Sums Calculator is a tool for predicting fruit maturity, from flowering data.

It can be used to assist with forecasting and effectively organise resources (such as transport and harvest labour) to avoid bottlenecks; for planning and marketing purposes.

The heat sum formula adds the daily average temperatures until a pivotal heat unit is reached.

Forecasts are based on historical average temperatures, different varieties have slightly different heat units.

The calculation is as follows: [(max temp + min temp)/2] – 12.

The different mango varieties have slightly different heat units. Click the links below for further information. For a copy of the excel spreadsheets please contact us



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