If you look at precipitation a massive massive spike comes in...

If you look at precipitation a massive massive spike comes in Sept and October as torrential rain kicks in

G'day Tdman1-Re rainfall September is actually very Dry
The Wet-season Starts October though October still only 100mm
wettest period being -NOV-March.
The Faina Goldfields Project (Faina Project) is located in the central Brazilian state of Goiás.
GOIAS - WEATHER AVERAGES

		ANNUAL	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	YEARS	# CITIES
1	Average Temperature (C)	22.8	23.5	23.6	23.7	23.2	21.7	20.3	20.3	22.3	23.8	24.3	23.8	23.5	28	10
2	Average High Temperature (C)	29.6	29	29.5	29.8	29.7	29	28.5	28.7	31	31.5	30.9	29.7	29	28	10
3	Average Low Temperature (C)	17.7	19.5	19.4	19.4	18.4	16.3	14.2	13.7	15.4	17.7	19.1	19.4	19.6	28	12
4	Average Precipitation (mm)	1406.7	186.7	110	233.3	80	43.3	---	13.3	---	30	116.7	230	316.7	7	3
5	* Years is the average number of years used to compute the average. # Cities is the total number of locations used to compute the average.

salt