According to the Bureau of Meteorology's autumn outlook, warmer than average days and nights are very likely for almost all of Australia between March and May. 

In Tasmania, autumn is expected to be significantly drier than average.

In April there is less a than 30 per cent chance that the state's North will exceed its median rainfall. 

Temperature wise, the chances of being warmer than median for both days and nights is greater than 80 per cent for most of the country. 

The warm outlooks follows Australia's warmest December and January on record. 

There is also a 50 per cent chance of El Niño developing, which is almost double the normal chance. 

BOM manager of long-range forecasting, Dr Andrew Watkins, acknowledged the outlook was not the news many would be wanting to hear.

"Unfortunately, the outlook isn't giving a strong indication that we'll see a return to average or above average rainfall in many areas over the autumn period," he said. 

"Autumn is obviously a critical time of year for agriculture, particularly in the southern parts of the country.

"It's important to remember that despite what the outlook is suggesting, individual heavy rainfall events are always possible, and people should stay up to date with the latest seven-day forecast and warnings for their area."

Meanwhile, Tasmania is expected to experience record breaking-temperatures on Friday and Saturday.

Dry and gusty conditions will bring high to severe fire dangers for much of the state's East and South, with a total fire ban issued for the state's South from Friday to Sunday.  

Maximum temperatures are set to reach the mid to high 30s in the southeast on Friday and Saturday, mid to high 20s on the north-coast and low 30s elsewhere.

There is also the chance for thunderstorms on Sunday, with cooler overnight temperatures and maximum temperatures around low to mid 20s for Monday. 

For all Tasmanian warnings visit the BOM website.