An intense spell of hot weather is set to hit the UK this weekend, with temperatures expected to reach as high as 33C.

Warm air will move up from Europe on Saturday, with overcast weather expected to clear throughout the day and into the evening.

Sunday and Monday are expected to be the warmest days before temperatures dip again on Tuesday to average levels for this time of year, the Met Office said.

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Highs of 33C (91F) are expected in London, 26C (78F) in Manchester, 22C (71F) in Glasgow and 21C (69F) in Belfast.

The hot spell is partly due to Storm Debby, which battered parts of the south of the US earlier this week.

The tropical weather works to strengthen the jet stream – a core of strong winds in the atmosphere which has a significant influence on UK weather – causing it to meander in the Atlantic.

That, weather experts say, will cause hot air to rush into the UK later this weekend and early next week.

However, heavy showers and thunderstorms may accompany hotter weather in some western, central, and northern areas of the UK.

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Dan Suri, chief meteorologist at the Met Office, said: “Tropical storm Debby is helping to strengthen the jet stream, and is causing it to meander over the Atlantic.

“This will allow hot air to move into the UK later this weekend, and early next week.

“Temperatures are likely to reach the low 30s in places, notably in the south and southeast. Further north and west within this warm air, outbreaks of heavy showers or thunderstorms are possible.

“As well as the hot daytime temperatures, a very warm night is also expected on Sunday night into Monday,”

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By Tuesday, temperatures are expected to return to average on Tuesday and Wednesday.

The rise in temperature is not considered a heatwave, the Met Office said, as temperatures need to exceed a specific threshold over three consecutive days in order to meet the criteria.

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The pollen count will rise along with temperatures, as will UV levels.

The Met Office recommends covering up during hours in the middle of the day and wearing suncream.

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