Life Saving Victoria's general manager of lifesaving services Liam Krige said 45 people have drown this season already - up from 34 in the 2019-20 financial year.

"That's 45 families grieving the loss of a loved one," he said. "This includes 13 children aged under 14 years which makes this our worst drowning toll on record."

Mr Krige is urging Victorians who are planning on swimming during the long weekend to remain vigilant and safe around waterways and backyard pools.

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"While summer may be officially over, the risks are still there," he said.

"With the forecasted warm weather, we're expecting Victorians to flock to their favourite beaches, waterways or fishing spots, or simply enjoy being able to get in the pool with their mates."

"Too often, we see complacency creep in when enjoying the water ways. The usually laid back mantra of 'she'll be right' will not keep you safe."

To help stay safe, people are advised no to drink, keep an eye on children at all times and prioritise safety. If you are visiting a beach people should swim between the red and yellow flags.

Mr Krige said more than 500 people had been rescued from the water this season.

"That's an increase of more than 10 per cent on 2019/20 rescue statistics," he said.

"The message this long weekend is simple. If you're heading to the beach, river or pool, never overestimate your abilities and research the dangers and avoid unecessary risks around water.

"We want to keep everybody safe in the water, but we cannot be everywhere at once."

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