Average Seasonal Rainfall

Rainfall can clearly be expected to become increasingly seasonal, with greater winter rainfall and a reduction in summer rainfall.  The summer decrease will be greater than the winter increase, with the remaining two seasons also showing slight decreases. 

The expected winter increases are approximately double the size in the uplands and the lowlands compared to the coastal areas of the region.  The summer deceases seem to be similar across the region when viewed in terms of millimetres per month reduction, but this equates to differing percentage changes due to varying baseline values.