Last night's crisp temperatures were just a test run for the rest of the week's cold and wet weather.
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Today (Monday, 15 March), a high-pressure system is expected to turn a chilly morning into a mostly sunny, cool day in the South Coast and Illawarra region, according to the Bureau of Meteorology.
But daily showers are likely from Tuesday until at least the end of the week. Thursday will likely be the wettest day with 15 to 50mm of rain expected in Nowra.
Ulladulla should see a similar fate with rain expected throughout the week starting tomorrow. Ten to 35mm of rain is anticipated for Thursday with light southeasterly winds throughout the week's mornings.
Overnight temperatures will drop throughout the region and Tuesday should be the coldest night with temperatures likely to fall between 8 and 14 in Nowra.
Rain fell over the weekend with some areas on the southeast coast receiving more than 45mm, certainly welcomed by farmers.
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The 2020-21 La Nina has passed its peak and is now weakening, according to the Bureau of Meteorology. Climate model outlooks indicate the El Nino-Southern Oscillation (ENSO) will return to neutral (neither La Nina nor El Nino) during autumn, according to the Bureau of Meteorology.
While La Nina's influence on Australian rainfall typically wanes during autumn when events usually decay, it can still bring above average rainfall to parts of northern and eastern Australia during the final months of the northern wet season.
April to June rainfall is likely to be above average for large parts of eastern Australia.