When does the Australian wet monsoon typically occur?

The Australian wet monsoon typically occurs from December to February, which aligns with the seasonal patterns in northern Australia. During this period, the region experiences significant rainfall due to moist air being drawn in from the surrounding oceans, particularly the Indian Ocean.

This wet monsoon season is characterized by tropical lows and cyclones, which contribute to the increased precipitation. The movement of the monsoon trough, which shifts southward during the summer months, is critical for enhancing moisture convergence and generating heavy rains in the area.

The other periods mentioned do not coincide with the monsoon conditions in Australia. The January to March timeframe is partly correct, as it encompasses part of the observed wet season, but the full wet monsoon season officially begins in December. The months of June to August correspond to winter in Australia, where the climate is typically drier in the northern regions. March to May also falls outside the main monsoon season, as rainfall decreases dramatically after the peak months of December through February. Thus, December to February accurately captures the extensive rainfall associated with the Australian wet monsoon.