UPDATE: THIS weekend is the perfect time for Victorians to review their fire plan ahead of hot and windy conditions forecast for Thursday.

Several fires are burning across Victoria but they are under control, including a blaze at Kentbruck in the state's southwest, where 66 fire crews are still stationed.

A State Control Centre spokeswoman said the Kentbruck blaze has actually increased in size to 11,890 hectares, due to backburning as part of containment efforts.

A 13ha blaze at Kangaroo Ground on Melbourne's outskirts has been declared safe.

"It was quite close to a significant number of properties," the spokeswoman said.

She urged Victorians to take advantage of the milder conditions over this weekend to review their fire action plans and take steps to protect their homes.

"While the weekend is a little cooler, now is the perfect time to review your fire action plan," the spokeswoman said.

She said conditions around Thursday next week were expected to be hot, dry and windy, which could push the state into the second highest fire warning zone - extreme - but predictions would be clearer closer to the day.

Three children were treated for smoke inhalation yesterday as a fire at Blampied, near Daylesford, passed the Rutherford Retreat where about 100 school-aged children were holidaying.

Victorian Fire Services Commissioner Craig Lapsley said the community of Kangaroo Hills was very close to the fire and would likely have been hit had the blaze not been contained by crews, including three aircraft.

About 30 farming properties surround the town but only one shed had been destroyed in the Blampied area.

"That fire had a huge potential to run into bushland and ultimately if it did run into bushland it would have significant potential to impact on communities such as Daylesford," Mr Lapsley said.