The UK could see a return of 30C heat just in time for the coming bank holiday Monday – as what is expected to be among the hottest summers on record continues.

More unsettled weather is expected from Tuesday, as the remnants of Hurricane Erin are set to bring wind and rain to the country for much of next week.

Huge crowds are expected to gather for London’s Notting Hill Carnival, as well as Reading and Leeds festival, and Creamfields in Cheshire over the weekend, conditions are set to become increasingly warm and sunny.

The bright bank holiday comes in the wake of four UK heatwaves so far this summer.

The Met Office said last week that, even though the summer is yet to be over, it was already on track to be among the country’s hottest on record.

Those hoping to make the most of the hot weather may have to grapple with travel delays and cancellations.

A strike on the CrossCountry network could make getting back from Leeds tricky on Sunday, while engineering works will mean no LNER trains in or out of London King’s Cross.

The CrossCountry strike will continue on Monday, when there will be no trains between Birmingham, Reading and the south coast of England. There will also be no service between Leicester, Cambridge and Stansted Airport.

The RNLI also warned people planning a trip to the coast to use lifeguarded beaches and to beware of rough seas.

Weather over the weekend will be largely dry and cloudy, with temperatures expected to peak at 24C on Sunday.

Monday’s warmth will arrive as the remnants of Hurricane Erin – which skirted the Caribbean and east coast of the US this week – push warm, tropical air towards the UK.

The warmest temperatures will be felt in England and Wales – though Scotland could still see peaks in the low 20s.

However, this will be short-lived, as cooler, unsettled weather will develop as the storm arrives over the British Isles on Tuesday.

The Met Office expects rain to persist throughout the rest of the week, though strong winds will stay offshore.