Summer storms end June in Spain. Credit: Yuriy Semak – Shutterstock
Spanish weather forecasters are saying thunderstorms will affect large parts of the east of the country from Monday before an all-new heat dome causes temperatures to rise above 40ºC in southern valleys by midweek.
Following weekend storms in the north of the country, attention now shifts to eastern areas as heavy showers and storms develop while temperatures begin their climb in southern and central zones.
Monday, June 29, Spain weather: Thunderstorms in east and rising temperatures
Eastern areas are predicted to see mostly clear skies at the start of the day, with moderate rain falling along the Cantabrian coast where accumulations could reach between 5 and 10 litres per square metre. Showers will intensify during the afternoon across the Pyrenees, interior Catalonia, southern Aragon, interior Valencia region, Murcia region, eastern Andalucia mountains and the eastern half of Castilla-La Mancha. Accumulations of 20 to 30 litres per square metre are likely to occur near the centre of the country accompanied by frequent lightning, possible hail and strong wind gusts.
Mucha precaución en zonas de tormenta, sobre todo en carretera. Son tormentas de corta duración, pero con fenómenos adversos en las zonas de paso.
Imágenes la @DGTes de la A3 a su paso por Utiel, Caudete de las Fuentes y la zona del embalse de Contreras. pic.twitter.com/ufNPBrCnIJ
— AEMET Comunitat Valenciana (@AEMET_CValencia) June 28, 2026
Residents in these eastern zones may face sudden changes with storms bringing lightning strikes and gusty conditions that disrupt outdoor plans. The morning rain will stay lighter in northern coastal districts, while afternoon weather cells are expected to concentrate further south and inland. Forecasts from models keep totals manageable yet locally heavy enough to cause surface water in low spots and complicate driving conditions.
Stationary high-pressure systems are trapping a lot of hot air over southern regions and pushing temperatures higher, making for a muggier feel. Heat warnings cover the Guadalquivir Valley, southern plateau and Madrid region, where many locations will exceed 36ºC. Similar highs of 35ºC to 36ºC will continue to affect interior Catalonia and the lower Ebro areas. Extremadura and western parts will also record readings above 36ºC as the warmth builds from the south and west.
Tuesday, June 30, Spain weather: Stability returns with some showers
Some semblance of stability is expected to take hold over most of the country, though with weak rain, especially on the north coast of Spain. Isolated showers will develop in the evening over eastern mountain areas with limited totals expected. Drier air will spread from the west and reduce storm chances across the central and southern interior.
Temperatures then climb even more still, with 40ºC in the Guadiana and Guadalquivir valleys. Southern areas will feel the strongest heat, while northern coastal strips remain cooler under lingering cloud and light rain. Models show the heat establishing firmly in these valleys with very little relief overnight in many low-lying areas.
Eastern mountain districts stay the main focus for any late-day activity, though amounts stay small. Most other regions will enjoy longer dry spells as the overall pattern calms compared to Monday. Spanish weather outlooks improve for travel and outdoor events away from the far north coast.
Wednesday, July 1, Spain weather: Lingering showers before heat turns up
Light rain returns to the north coast while afternoon showers form in interior Catalonia and Mallorca. These features stay light and manageable with accumulations well below Monday levels in most places. The rest of the country is expected to see mainly dry conditions under increasing high-pressure influence.
Heat continues to build, with the most extreme readings expected in southern valleys. Forecasts indicate a maximum of 42ºC in Seville, 41ºC in Badajoz and 40ºC in Cordoba by Thursday, though the heat is due to intensify from Tuesday. Guadalquivir and Guadiana areas feel the peak effects first with very little breeze to ease the conditions.
The intense warmth will probably last until Friday, as most Julys begin, when high temperatures extend to the southern plateau and interior Galicia. Spanish heatwave forecasts show this pattern dominating through the middle of next week with minimal rain chances after Wednesday.
Summer has truly arrived in Spain, and the weather shows it.
