Annual rainfall is high, ranging from over 2000 mm. in the Iron Range and north of Weipa to about 700 mm. at the southern border. Most of this rain falls between November and April. Only on the eastern slopes of the Iron Range is the median rainfall between June and September above 5mm (0.2 inches). Between January and March, however, the median monthly rainfall ranges from about 170mm (6.5 inches) in the south to over 500mm (20 inches) in the north and on the Iron Range.