Weather experts predict that temperatures in the UK could soar to 30C by the end of this month, based on advanced weather modelling maps. These maps indicate a significant temperature anomaly, with deep red areas appearing across England and Wales, suggesting higher-than-average mercury levels. According to the GFS weather model, temperatures could exceed 25C for five consecutive days starting on May 24, with peaks of 27C expected in the south-east of England.
On May 24, Yorkshire could experience temperatures of up to 25C, while parts of Wales and Scotland may reach highs of 23C. The following day, May 25, the south-east of England, particularly London, could see highs of 27C, with East Anglia also expecting temperatures around 25C by 6pm. Subsequently, temperatures may slightly decrease on May 26 and May 27, with highs of 25C in the south-east and 20-22C in the rest of England and Wales. However, May 28 is anticipated to be exceptionally hot.
Maximum temperature projections for May 28 indicate potential highs of 30C near London, with temperatures in the south-east reaching 28-29C and as far north as Yorkshire hitting 27C. Scotland may see temperatures in the low 20s, while Wales could experience highs of 25C. The forecast suggests that around 20 counties in England could witness temperatures exceeding 27C during this period.
The UK Met Office declares an official heatwave when temperatures surpass the heatwave threshold for three consecutive days, which ranges from 25C to 28C across different regions. While the south-east of England has a threshold of 28C, other areas have lower thresholds. Therefore, even if temperatures reach 30C on a single day, an official heatwave declaration may not occur.
The Met Office anticipates a “rather warm” end to the month but has not confirmed a heatwave. The forecast for May 18 to 27 indicates near-normal temperatures initially, gradually becoming warmer towards the end of the period, especially in the south of the UK.
