Temperatures could rise above 30C in parts of the UK next week, forecasters say - bringing Britain's "first properly hot summer's day", experts have said.
The coming months are also likely to bring heatwaves, according to the Met Office's Steve Keates, who said: "There's not been much in the way of exceptionally warm days or hot days yet this year, but that is set to change.
"We're set to see probably a brief spell of hot weather at the end of this coming week."
As the remnants of Tropical Storm Alex bring a low-pressure system to our shores, the country is going to be graced with a mixed bag of weather.
Some parts of the north of the UK could experience gusts in excess of 55mph, alongside frequent showers and possible thunder.
But hot air over Iberia and France will be spreading north - and come Friday and Saturday, when Royal Ascot will be reaching its climax, things are going to feel warmer - hotter even than Hawaii, which is only due to reach 24C (77F).
The weather in the south is likely to be fine and dry, with temperatures in London due to peak at 29C (84F) on Friday and 24C (75F) on Father's Day, although some experts predict them going into the low 30s.
South East England may experience temperatures of 32C (89.6F) on Friday, although Mr Keates added: "It could possible be a little hotter than that.. mid-thirties are possible.
The warm spell will mean Britain is hotter than Portugal, Jamaica, Costa Rica, the Canary Islands and Cyprus.
Sky weather producer Joanna Robinson said: "From Wednesday it looks like temperatures are on the rise, as hot air over Iberia and France spreads further north.
"The south will reach the mid-20s, potentially the low-30s on Friday or Saturday."
The hottest day of the year so far was recorded in May, when the mercury hit 27.5C at Heathrow.
"We should beat that comfortable on Friday and potentially exceed it, or get very close to it, on Wednesday and Thursday as well," Mr Keates said.
He added that heatwaves - three consecutive days of high temperatures - were possible between June and mid-September.
UK weather: The latest Sky News forecast
Pollen levels are also expected to be high in the south of the UK - with hay fever sufferers warned to prepare for a deluge of sneezes.
"Particularly potent" pollen caused by recent warm and wet weather is causing worse-than-usual symptoms for hay fever sufferers.
The combination of damp and warm weather in May means that despite pollen counts being no higher than usual, the pollen itself is stronger, experts said.
Yolanda Clewlow, from the Met Office, said: "The potency of these pollen grains could be more intense this year, and that comes down to the weather we've had in spring.
"A warm and wet May, coupled with a relatively warm spring, mean there's a chance that the pollen that has developed is particularly potent."