The temperature in Warrnambool reached 20.7 on Sunday, the city’s warmest May day this year.

While it felt unusually warm it was hardly a record-breaking temperature.

The Bureau of Meteorology recorded a maximum temperature of 29.7 in Warrnambool on May 9, 2013.

The city is expected to experience temperatures close to the average.

The mean temperature for May for the past two decades is 16.6 degrees with figures currently sitting at 15.7.

Forecasters are warning the dry weather won’t last with rain expected for the remainder of the week.

Cold nights will also return with overnight temperatures expected to fall short of double-digits by Friday.

These figures come on the back of a particularly wet April in which Warrnambool was soaked with 95mm of rain. 

Some parts of the south-west experienced record rainfall for April.

The Bureau of Meteorology’s Richard Carlyon said despite the wet April forecasters were now watching out for an El Nino weather pattern and, if that eventuated, the south-west would experience a drier winter, spring and summer.

“We do expect conditions to dry out,” he said.

“There is slightly more chance of below average rainfall rather than slightly above average.”