The UK is preparing for a 'mini heatwave' as weather maps indicate temperatures could reach 22°C starting Saturday, April 25, and lasting for five days. According to WXCharts, which uses MetDesk data, the warmest areas will be in the south-east, particularly London and Surrey, where temperatures are expected to hit 19°C. The West Midlands will also enjoy sunny spells with temperatures around 19°C on April 27. While the beginning of the week will be warm, the Met Office warns of possible unseasonal April snow in northern regions later in the month. A high-pressure system is expected to dominate, bringing dry weather and sunny spells initially, but some areas may experience scattered showers. The forecast suggests a mix of conditions, with confidence in the details remaining low as unsettled weather could return by the weekend.