Parts of Western Australia will experience Catastrophic fire danger ratings during the middle of this week before a burst of cold, wet and windy weather sweeps across the southern half of the state.

Hot and dry northwesterly winds will strengthen over the southern inland of Western Australia on Wednesday and Thursday ahead of an approaching cold front.

Fire danger ratings are expected to reach the Catastrophic category in the Goldfields and Eucla Districts on Wednesday, and Extreme to Catastrophic in the Eucla and South Interior Districts on Thursday.

This mid-week burst of heat and wind will be a stark contrast to much colder air that will follow.

A series of cold fronts passing over the southern Indian Ocean will sweep over Western Australia between Wednesday and Friday. These systems will cause strong and potentially damaging winds, showers, hail and thunderstorms in a number of the state's southern and western districts.

The first front will arrive on Wednesday, producing a band of rain and thunderstorms as it sweeps over the state's South West Land Division, most likely reaching Perth in the afternoon or evening.

This band of rain and storms will dissipate as it crosses the wheatbelt early on Thursday morning, so it may provide little relief for any fires that are burning in the Goldfields District.

A deep low pressure system passing to the state's south will maintain cool and brisk southwesterly winds and showers over the  Southwest Land Division on Thursday and Friday. Thunderstorms and small hail should also accompany the showers in the state's southwest on Thursday.

Calmer and drier weather will return from Saturday as a high pressure ridge develops over the south of WA.

Be sure to keep up to date with the latest severe weather warning in WA this week.