Summer is shaping up to be wetter and warmer than average with the region set to experience back-to-back La Nina weather.
This means there is a higher chance of sudden downpours, similar to last year, but hotter days combined with more rain meaning sticky weather is on the way.
Bureau of Meteorology duty forecaster Miriam Bradbury it was not unusual to have two years of La Nina.
"We have now declared a La Nina but we are not suddenly seeing a jump in our climate outlooks, that is for a wetter than average December to February for the Warrnambool area," Ms Bradbury said.
But Warrnambool was also set to have warmer than average temperatures.
"Maximum temperatures look like they will be above average for the Warrnambool region," he said.
"Warmer combined with that above average rainfall could keep it a bit stickier and less pleasant."
Ms Bradbury said there was an increased likelihood of flooding events across Victoria.
Spring has already been wetter than average with 212mm of rain over the past three month compared to an average of 193mm.
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But that was because the amount of rain in October was about double the average with 115mm falling, while September had slightly lower than average rainfall.
October last year was also a wet month with 137mm falling -more than double the 67.2mm long-term average.
In 2020, 55.6mm fell in one day alone in October while this year the wettest day was October 29 when 48.8mm fell.
Temperatures over spring have been on a par with average. Next week Warrnambool is forecast to have a stretch of warm weather with the mercury set to hit the high 20s on Wednesday.
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