Maximum temperatures are set to drop significantly on Wednesday, potentially falling by up to 8 degrees Celsius in some regions of the mainland, ending the possibility of a heatwave, according to the Portuguese Institute for Sea and Atmosphere (IPMA). Meteorologist Maria João Frada stated that a decline in maximum temperatures, which have been above average for this time of year, is expected from Tuesday, April 28. The weather will worsen with heavy rain, hail, and widespread thunderstorms, with yellow warnings issued for most of the country. A slight improvement is expected on Thursday, though unsettled weather with potential showers and thunderstorms may return over the weekend.