A horrified homeowner has found eight deadly redback spiders on their windowsill following heavy rains in Victoria over the weekend.

The picture, uploaded to Reddit, shows the dead spiders curled up after they couldn't escape from the wild weather.

The picture was uploaded with the caption: 'When you live in Victoria and the first day of summer brings rain. All these red backs on one windowsill. Make sure your windows are all closed!'

A horrified homeowner has found eight deadly redback spiders on their windowsill following heavy rains in Victoria over the weekend

Spiders are with us all year round, but as the weather gets warmer, they are entering our houses in higher numbers than usual, looking to get out of the hot sun or away from heavy rain.

Head of Spiders at the Australian Reptile Park Kane Christensen said the redback spiders were likely looking for dryer conditions inside the home.

'Spiders like redbacks, white tails and huntsmen prefer dry conditions over moist,' he told Daily Mail Australia.

'They don't want their burrows or webs to get wet.

'You'll find a redback in every house in Australia because of dry conditions.'

Mr Christensen said once the spiders set up residence there they reproduce quickly.

'There could be hundreds of eggs in an egg sack,' he said.

Mr Christensen said of all the spiders Australia might see this summer, only two were very dangerous. But do you know what they are?

As the weather gets warmer, spiders are increasingly gravitating inside. Can you pick the spiders that are worth getting frightened about? (Pictured: Daddy Long Legs - very safe)

SYDNEY FUNNEL-WEB

Of all the spiders in Australia, Mr Christensen says the Sydney funnel-web is the most dangerous. It is aggressive and its venom, especially coming from a male, can be deadly.

The spider lives mostly underground, but comes out to search for a female mate when the weather gets warmer.

'Funnel-webs like warm weather, rainy afternoons - when the humidity is up, they can travel longer distances,' Mr Christensen said.

The Sydney Funnel Web spider is one of the world's most dangerous spiders due to its poisonous venom. There has not been a recorded death since 1981 when the antivenom was produced

The arachnid expert said the spiders were coming out earlier this year because of the unusually warm weather, but their numbers would peak around January.

To keep safe from a nasty bite, Mr Christensen says floors should be cleared and shoes and towels left outside should be shaken before use.

Another danger area for the Sydney funnel-web is the backyard swimming pool.

The spider can often fall into swimming pools and will become stuck, as it is unable to climb smooth surfaces or jump.

A funnel-web can survive up to 30 hours in the water, so don't assume the arachnid is dead if you come across it.

Funnel-webs can be identified by their glossy and hairless fronts, and males have a large mating spur coming from the middle of their second pair of legs.

To keep safe from a nasty bite, Mr Christensen says floors should be cleared and shoes and towels left outside should be shaken before use

WOLF SPIDER

The wolf spider can grow up to eight centimetres, and is found widely across Australia.

When it is young, the spider is carried on its mother's back until they are ready to disperse by ballooning away using its web, or on the ground.

Wolf spiders are often found in backyards, and Mr Christensen says a hole in the ground with webbing in it will be the entrance to the burrow of a wolf or trapdoor spider.

The Wolf spider is often found burrowed underground in a back yard, and is common around Australia

The arachnid will rarely set up a web to catch food, and will instead chase down its prey on the ground.

Mr Christensen says the bite of a wolf spider will have no major effect on humans, but if the spider is large, it will hurt.

Wolf spiders can be defined by their drab colouring, with most having multi-coloured patterns on their exterior, in brown and yellow, grey, black and white.

Mr Christensen says the bite of a wolf spider will have no major effect on humans, but if the spider is large, it will hurt

MOUSE SPIDER

The Mouse spider looks similar to the funnel-web and can also be quite dangerous to humans.

This arachnid is usually slower to move than the others, and can be identified by its red-tinged body, or if it's a female, jaws.

Mouse spiders look similar to funnel-web spiders and their bite can be quite dangerous

Mouse spider bites can be 'medically significant' to humans, Mr Christensen said, though a fatality has never been recorded.

Victims of the creepy crawly have previously been administered funnel-web anti-venom and it has been effective in treating the bite.

The mouse spider is most active during the day time, as opposed to many other arachnids which are night-time creatures.

The spiders are most active during the day - as opposed to many other arachnids which are night-time creatures

RED BACK SPIDER

The redback spider's venomous bite can also be deadly to humans, with 16 recorded deaths.

Mr Christensen said people are 'more likely to be bitten by a redback than any other Australian animal'.

The female is typically more aggressive than the male and the arachnid prefers to be in dry and dark conditions - making them very fond of houses.

'A redback hangs a line of web down to the ground, so they're often found underneath things,' he said.

'When you pick something up from the ground, that's how you get bitten.'

Female redbacks are black, with a clear red stripe along their upper abdomen.

The male is a light brown colour and has subtle white marks on its upper abdomen.

Mr Christensen says Redbacks are often under things and the easiest way to get bitten is to grab something off the ground without looking

WHITE TAIL SPIDER

Contrary to popular belief, a white tail spider bite will not result in gaping holes in a person's flesh.

The white tail spider has very powerful fangs, and Mr Christensen explained: 'it's not something you could sleep through'.

He said he knew of 132 confirmed cases of a white tail spider bite, all of which caused pain and swelling, none of which resulted in missing flesh.

Contrary to popular belief, a White Tail spider bite will not result in gaping holes in a person's flesh

'People who had the missing flesh ended up having diabetic ulcers, misdiagnosed skin cancers, or another medical condition,' he said.

Summer and Autumn are the most likely seasons to find a white tail spider inside, but the arachnid is there to eat other spiders.

The creature can be identified by a distinctive white marking on the tip of the abdomen, and two pairs of dots on the abdomen, which fade as the arachnid ages.

HUNTSMAN SPIDER

The huntsman spider's size often leaves humans cowering in fear, but Mr Christensen says there is little to worry about.

'The huntsman is a venomous spider, but it's not dangerously venomous,' he said.

'Their venom in us is localised pain and swelling, and it will hurt - but the huntsman is usually reluctant to bite unless it is defending its eggs.'

Huntsmen are often found in cars as well as houses, particularly behind sun visors, as well as hiding in rock walls or behind dead bark.

They are identified by their flattened bodies, designed for living in crevices or behind dead bark.

The huntsman spider may appear intimidating to humans, but its venom is not dangerous

Huntsmen are often found hiding inside cars, behind the sun visor, but are also a fairly common sight inside houses