The United Kingdom is set to experience its warmest weather of the year this week, with temperatures expected to reach a high of 27 or 28C (81-82F) on Thursday, May 1. This could potentially be the hottest April weather the country has seen in seven years. The warm weather will be accompanied by dry conditions and plenty of sunshine, leading to high levels of UV and pollen.
The rising temperatures are a result of a blocked weather pattern, with high pressure firmly in place near the UK. This has prevented rain-bearing weather systems from passing through, as the jet stream has been diverted away from the region. As the high-pressure system moves eastward, it allows for warm south or south-easterly winds to bring in hot air from continental Europe.
Most areas of the UK, except for the far north of Scotland, are expected to experience temperatures in the twenties Celsius on Tuesday and Wednesday. Forecasts indicate that parts of south-east England could reach 26C, a temperature not seen in April since the lockdown spring of 2020. There is a possibility that temperatures could even rise higher, reaching 27C on Wednesday, marking the warmest April day since 2018.
While the current warm spell may not meet the criteria for a heatwave, it will still be a significant period of warm weather, with temperatures expected to be 8-10°C above the seasonal average. Pollen levels are expected to be high, posing challenges for hay fever sufferers, and UV levels will also be elevated. The ongoing dry weather may raise concerns about wildfires, as parts of southern England have received much less rainfall than usual since early March
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