There was drizzle falling in Warrnambool at 7am, but it's going to be a glorious day with a top temperature of 24 degrees.
There's also some early morning fog and the temperature at 7am was 15.2 degrees.
Ity will be cloudy at first and then a mostly sunny afternoon.
Light winds will become southerly 20 to 25 km/h in the middle of the day then tending south-easterly at 15 to 20 km/h in the late evening.
Across the south-west Ararat is expecting a hot 34 degrees, Hamilton 32, Colac 31, Casterton 33, Mortlake 32, Heywood 28, Portland 24 and Port Fairy 23.
A high pressure system over western Bass Strait extends a ridge to another high located over the southern Tasman Sea.
The high to the west will weaken later today as a low pressure trough over inland Australia extends southward to northern Victoria.
During Tuesday evening a weak cold front will cross Tasmania as a new high forms over the Southern Ocean, with the high passing to the south of Tasmania Wednesday night.
On Thursday a deep low pressure system over southern WA will enter Bight waters and slide southeast, with an associated trough approaching the western border at night.
For the rest of the week, Warrnambool is expecting 26 on Tuesday, 23 on Wednesday, a hot 34 on Thursday, 27 on Friday and a lovely 23 for Australia Day on Saturday.