Following one of the hottest Julys in recent years, Spain is expected to experience a marked change in weather conditions as August begins. Meteorologists believe the prolonged heatwaves will gradually ease, with cooler Atlantic air replacing the intense heat that has dominated much of the country. While this will bring welcome relief from soaring temperatures across many regions, it is also expected to increase the risk of heavy thunderstorms, torrential downpours and localised severe weather.
Spain Expat Press Editorial Team
by Marlon Gallego Bosbach
End of the Exceptional Heatwave
For weeks, large parts of Spain were dominated by temperatures well above 40°C. The regions of Andalusia, Extremadura, Castilla-La Mancha, as well as areas further inland, were particularly affected by an exceptionally persistent high-pressure system that continuously pushed hot air masses from North Africa across the country.
With the start of August, this weather pattern is expected to change. Weather models indicate that the strong area of high pressure will gradually weaken, allowing low-pressure systems from the Atlantic to increasingly influence conditions across Spain. As a result, cooler air masses will be able to move into the country, causing temperatures to fall noticeably in many areas.
Noticeable Cooling Across Many Parts of the Country
According to the latest forecasts, temperatures in many regions are expected to fall back towards levels that are closer to the typical climate average for the beginning of August.
While many parts of Spain recorded maximum temperatures of between 40 and 44°C in recent weeks, temperatures across large areas of the country are expected to be several degrees lower in the coming days. The cooling trend is likely to be particularly noticeable in northern and western Spain. Inland areas are also expected to see some relief from the extreme heat, reducing the strain caused by the prolonged high temperatures.
Along the Mediterranean coast and in Andalusia, conditions will remain warm and summery, but temperatures are also expected to fall below the exceptionally high levels seen in recent weeks.
Thunderstorms Instead of Heat
With the arrival of cooler Atlantic air, the likelihood of unstable weather conditions is expected to increase significantly. When these cooler air masses meet the atmosphere over Spain, which has been heavily heated by the prolonged period of extreme temperatures, locally intense thunderstorms can develop.
Meteorologists are expecting particularly intense thunderstorm cells during the afternoon and evening hours, which may be accompanied by torrential rain, hail and strong gusty winds. In some areas, there is also a risk that large amounts of rainfall could occur within a short period of time, potentially leading to localised flooding.
According to current forecasts, the risk of such severe weather events is particularly elevated in eastern Spain and along the Mediterranean coast.
Possibility of a DANA
Meteorologists are also monitoring the possible formation of a so-called DANA (“Depresión Aislada en Niveles Altos”). This refers to an isolated upper-level low-pressure system that breaks away from the general westerly flow.
These weather patterns are known in Spain for producing exceptionally heavy rainfall. Depending on the system’s path, amounts of rain that would normally accumulate over several weeks can fall within just a few hours. Coastal areas along the Mediterranean are particularly vulnerable to flooding during such weather events.
However, whether a DANA will actually develop and which regions would ultimately be affected can only be forecast reliably a few days in advance.
Different Impacts Depending on the Region
The change in weather conditions will not affect all parts of Spain equally.
In the north of the country, more frequent rainfall and noticeably milder temperatures are expected.
In central Spain, the extreme heat is also expected to ease, although the likelihood of locally strong heat-related thunderstorms is set to increase.
Along the Mediterranean coast – particularly in the regions of Valencia, Murcia and Catalonia – there is an increased risk of locally severe thunderstorms accompanied by torrential rain.
In southern Spain, conditions will remain very much summery, although temperatures are not expected to reach the extreme levels seen during the previous heatwaves. Localised thunderstorms may also develop in this region.
Wildfire Risk Remains High
Despite the expected change in weather conditions, the risk of wildfires remains significant in many parts of Spain.
The weeks of persistent dry conditions have left soils and vegetation severely dehydrated. Even if rainfall occurs in some areas, it is unlikely to be sufficient in many regions to fully offset the existing rainfall deficit.
In addition, dry thunderstorms accompanied by lightning strikes could trigger new wildfires before significant amounts of rainfall are able to reach the ground.
Weather Conditions Remain Dynamic
Meteorologists point out that the current outlook is still a medium-range forecast. While the general trend towards more unsettled weather conditions is considered likely, the timing, intensity and regional impacts of individual thunderstorm events may still vary.
For holidaymakers and residents in Spain, one thing is clear: following the extreme heatwaves, August is expected to begin with much more varied weather conditions. Instead of persistent record-breaking temperatures, many regions could soon see thunderstorms, heavy showers and more comfortable temperatures shaping the weather.
