Mean annual rainfall in the region is 1750 mm (1990-1999, or 1543 mm from 1903-2000, see evidence of climate change below); the mean daily minimum temperature is 15.5 Co; and the mean daily maximum temperature is 23.7 Co (1990-1999, Chapman and Chapman, unpublished data). Rainfall is bimodal, with two rainy seasons generally occurring from March to May and September to November. Over the last century there has been an increase in the amount of rainfall that the region receives annually.
