IT mighty be nearly Octo ber, but that doesn’t mean you should put your shorts away just yet.
Temperatures are expected to soar to 75F (24C) this week – so sun-worshippers are urged to grab their sun cream and shades.
And businesses are looking forward to an unexpected, but welcome, boost.
Met office forecasters say high pressure travelling from hundreds of miles away is the cause for the Indian Summer.
Pressure is sitting on the south coast and pushing up hot air from the continent.
And the unusually high temperatures are expected to carry into the weekend, making it the hottest start to an October since 2006.
Greg Clark, landlord of The Florence Arms, in Florence Road, Southsea, and the Golden Lion, in High Street, Southwick, said he was looking forward to a bumper weekend.
Greg, 55, said: ‘The sunshine has put a smile on people’s faces. Down at the Florence Arms, we’ve put in an extra cider order because we anticipated the hot weather.
‘Cider and sunshine go hand in hand, and we’ll look forward to pulling in the trade from those who look forward to having picnics down on the common too.
‘The sun is also getting people out into the countryside so in Southwick we’re anticipating being extra busy.
‘Walkers will want to come by and enjoy a beer in the garden.’
Penny Berglund, 36, barmaid supervisor at The Portsbridge, in Cosham, said: ‘The weather is glorious and you can see it on people’s faces.
‘The mood is fantastic, everyone is happy and having a laugh.
‘We’ve made sure to stock up on cold drinks and extra food and hopefully we’ll be able to do barbecues in the beer garden like we’ve done in the past.
‘More people have been coming in today to enjoy the sunshine with a sit down lunch and a bottle of wine.
‘I hope the wave of good weather will make up for what has been a pretty bad summer.’
Shan Mcneil, 57, who runs Marios Events ice-cream vans in Long Curtain Road car-park, in Southsea, and at Portsmouth’s Victoria Park, said: ‘There’s definitely been a boost in ice-cream sales.
‘I’m selling far more than I would at this time of the year, but luckily I keep myself well stocked so I very rarely run out.
‘The weekend will see everyone coming out, and that’s going to be great for my takings.’