The summer sun has always been part of Spain’s identity. It paints golden coastlines, fills lively plazas, and invites millions of visitors to experience unforgettable holidays. Yet, every now and then, nature reminds us that beauty can also arrive with extraordinary power.
Spain is now preparing for its fourth heatwave of the summer, and according to the Spanish State Meteorological Agency (AEMET), this event could become one of the most intense periods of extreme weather in recent weeks. Temperatures are expected to climb as high as 42°C (107.6°F) across several regions, while wildfire risks continue to increase dramatically.
Whether you are living in Spain, planning a holiday, managing outdoor work, or operating a travel-related business, understanding the timeline and risks of this heatwave is essential.
Let’s explore everything you need to know.
When Does the New Heatwave in Spain Start?
According to AEMET, the new heatwave officially begins on Wednesday after high-pressure systems strengthen across the Iberian Peninsula during Monday and Tuesday.
As warm southern winds intensify, temperatures will rapidly increase throughout the country. The hottest conditions are expected from Wednesday through Sunday, although weather experts note that the event could last longer depending on atmospheric developments.
The heatwave will impact much of mainland Spain as well as parts of the Canary Islands.
Forecast highlights include:
- Heatwave starts: Wednesday
- Expected duration: Until at least Sunday
- Possible extension: Depending on changing weather patterns
- Peak temperatures: Up to 42°C
Unlike ordinary summer warmth, this event is classified as a significant weather hazard because temperatures will remain dangerously high throughout both the day and the night.
Warm nights mean homes and buildings have little opportunity to cool down, increasing health risks for many people.
Meanwhile, Which Areas Will Experience the Highest Temperatures?
The most severe heat will concentrate in several well-known regions across Spain.
Forecast maximum temperatures include:
- 40–42°C in the Ebro Valley
- 40–42°C in northeastern depressions
- 39–41°C across the southwestern river valleys
- 37–39°C in La Mancha and parts of the Northern Plateau
- 37–38°C across Gran Canaria
- Temperatures exceeding 37°C in inland Fuerteventura
The Pyrenean valleys are also expected to experience unusually high temperatures for this time of year.
Even areas normally considered cooler may experience significant heat during the middle of the week before slight relief reaches parts of northern Spain.
Day-by-Day Weather Forecast During Spain’s Heatwave
Understanding how temperatures will evolve helps families, travelers, and businesses prepare more effectively.
Wednesday
The heatwave officially arrives.
Many inland areas will already reach:
- 39–41°C in southwestern valleys
- 40–42°C in the Ebro Valley
- 37–39°C across central Spain
The Canary Islands will also begin experiencing a noticeable temperature increase.
Thursday
Northern coastal areas along the Cantabrian Sea may experience slight cooling.
However, most of Spain remains extremely hot.
Temperatures continue between:
- 39–41°C in southwestern Spain
- Around 40°C in northeastern regions
- Above 37°C in Gran Canaria
Outdoor activities become increasingly dangerous during midday.
Friday
Heat intensifies once again.
Central and southern Spain are expected to experience some of the highest readings of the week.
Forecast highs include:
- 40–42°C in southern inland regions
- 39–41°C in the Ebro Valley
- 37–38°C in Gran Canaria
- High temperatures spreading into inland Fuerteventura
Furthermore, What Happens During the Weekend?
Although forecasts still contain some uncertainty, meteorologists expect the heat to continue through at least Sunday.
Many inland regions could remain above 40°C, especially across:
- Southern Iberian Peninsula
- Ebro Valley
- Northeastern depressions
The Canary Islands are also likely to continue experiencing unusually hot conditions.
Residents should continue monitoring official weather updates because heatwaves can extend beyond their original forecasts.
Why Is This Heatwave Considered So Dangerous?
Extreme heat affects far more than personal comfort.
AEMET warns that this event presents significant or even extraordinary danger, especially during the hottest hours of the day.
Groups facing the greatest health risks include:
- Elderly individuals
- Young children
- Pregnant women
- People with cardiovascular diseases
- Outdoor workers
- Tourists spending long hours in direct sunlight
High overnight temperatures further increase the danger because the human body cannot fully recover from daytime heat exposure.
Symptoms of heat-related illness may include:
- Dizziness
- Severe fatigue
- Headaches
- Rapid heartbeat
- Dehydration
- Heat exhaustion
- Heatstroke
Heatstroke is a medical emergency requiring immediate treatment.
At the Same Time, Wildfire Risk Continues to Rise
One of the greatest concerns accompanying this heatwave is the growing danger of forest fires.
Hot temperatures alone do not create wildfires, but when combined with:
- Very low humidity
- Dry vegetation
- Strong southerly winds
the landscape becomes extremely vulnerable.
Meteorologists warn that wildfire conditions may reach extreme levels, making firefighting operations significantly more difficult.
Spanish Prime Minister Pedro Sánchez has also warned that the coming days may prove particularly challenging as emergency services remain on high alert.
Visitors planning hiking, camping, or countryside activities should closely follow local restrictions and avoid any actions that could ignite fires.
Practical Tips to Stay Safe During Spain’s Heatwave
Preparation can dramatically reduce heat-related health risks.
Experts recommend:
- Drink water frequently, even before feeling thirsty.
- Avoid outdoor activities between late morning and early evening.
- Wear lightweight, light-colored clothing.
- Apply sunscreen regularly.
- Stay inside air-conditioned or shaded buildings whenever possible.
- Check on elderly relatives and neighbors.
- Never leave children or pets inside parked vehicles.
- Monitor official weather alerts daily.
Tourists should also schedule sightseeing during early mornings or evenings when temperatures are significantly lower.
Planning Travel or Outdoor Activities? Professional Guidance Can Make a Difference
Extreme weather is becoming increasingly common across Southern Europe. For travelers, event organizers, tour operators, and businesses, adapting plans to changing weather conditions is no longer optional—it is essential.
Professional travel planning, local weather monitoring, and risk management services can help you:
- Choose safer travel dates
- Adjust outdoor itineraries
- Protect employees during extreme heat
- Reduce disruptions caused by weather emergencies
- Stay informed with reliable local updates
Investing in expert guidance not only improves safety but also helps ensure a smoother and more enjoyable experience during periods of extreme weather.
Final Thoughts
Spain’s newest heatwave is expected to begin Wednesday and continue through at least Sunday, bringing temperatures as high as 42°C across multiple regions. Alongside the intense heat comes an elevated threat of wildfires, warm nights, and increased health risks for vulnerable individuals.
Whether you’re a resident preparing for the hottest days of the summer or a traveler eager to explore Spain’s stunning landscapes, staying informed and taking sensible precautions can make all the difference.
As climate patterns continue to shift, awareness, preparation, and timely professional support remain the best tools for protecting yourself, your loved ones, and your plans.