What is the rainiest season in Spain?

What is the rainiest season in Spain

While the official report from the State Meteorological Agency is not yet known, it is evident that this winter has deviated from the typical rainfall levels experienced across the country. In many parts of the country, this situation leads to a winter with minimal precipitation, although the Atlantic coast typically experiences its wettest season during this time. The season is characterized by the greatest amount of precipitation. Many people wonder what is the rainiest season in Spain.

Therefore, in this article we are going to tell you which is the rainiest season in Spain and in which areas it rains the most.

What is the rainiest season in Spain?

areas where it rains the most

The climatological winter experiences the greatest rainfall in the northern part of the peninsula, as well as in certain areas of the southern plateau, Extremadura, Andalusia and the Canary Islands. This mainly covers the Atlantic side of the peninsula. On the contrary, on the Mediterranean coast, autumn is the season with the highest rainfall. According to the reference climate series from 1981 to 2010, regions where spring is the rainiest season are relatively smaller.

Is there a change in the climate pattern, particularly in the Pyrenean region of Cerdanya and in certain areas of the Iberian System, where summer, traditionally known for its dryness, now experiences abundant rainfall caused mainly by summer storms?

Do we see a change in the pattern? It is an inquiry that arises naturally when we reflect on the past. Over the last twelve years, specifically since 2006, The entire country has experienced wetter-than-usual winters on only five occasions.. On the contrary, during the same period, there have been seven years in which spring rainfall has been above average. On the whole, it appears that springs have shown a tendency to be wetter, compared to the seasonal norm, compared to winters.

On the contrary, the usual peaks in autumn precipitation along the Mediterranean coast have expanded their reach towards the interior regions of the peninsula. At the same time, the spring climatic maxima that were once characteristic of the northern Meseta, the Ebro Valley and the easternmost section of the southern Meseta have decreased. During the last decades There have been notable alterations in the amount, intensity and distribution of precipitation throughout the year.

A few years ago we found ourselves in a situation reminiscent of the current one: winter was coming to an end and rainfall had been minimal, except in the northern part of the peninsula. However, unlike the previous year, the dominance of the anticyclone dissipated before the end of February. This change in weather patterns led to the arrival of storms, making the spring of 2018 the wettest season in our country since 1965.

Changing patterns and predictions

person with umbrella

The IPCC has indicated that there is some uncertainty around changing precipitation patterns across the seasons. While overall rainfall is expected to decrease throughout the year, the distribution of rainfall may not remain the same as it is today. Looking ahead to the remainder of the century, a decrease in rainfall is expected in spring, summer and autumn. However, the level of uncertainty is much higher for winter compared to spring and fall, although it appears that winter will see the smallest decrease in precipitation.

Both in our country and in certain areas of Europe, February says goodbye with abundant temperature records. This month has not only been atypical in terms of temperatures within our borders, but it has also been atypical for France, Belgium, Switzerland, Denmark, the United Kingdom and Norway.

Is autumn the rainiest?

rain in spain

Once summer is over, the long-awaited rains make their appearance. In many regions, Autumn precipitation is the most important and represents a substantial part of the annual precipitation.

Autumn, in various regions such as the Balearic Islands, the eastern peninsula, eastern Castilla-La Mancha, the Community of Madrid, northern Aragon, central Castilla y León and coastal areas of the Cantabrian Sea, is characterized by abundant rainfall, which makes it the season of the year with the greatest rainfall. This pattern holds true in the eastern part of the country, where autumn rains stand out as the most important annual rain events. The reason behind this phenomenon remains a topic of interest. There are two different methods by which rain can occur.

In Spain there are two different types of rain that can be differentiated: frontal precipitation and convective precipitation. Storm-related cloud bands accompany the arrival of frontal systems, which are typically associated with the first type of weather phenomenon. It is common for storms to approach our country from the west, originating in the Atlantic.

Galicia typically experiences initial downpours of this nature, but as it moves across the peninsula, the intensity tends to decrease and rarely reaches the eastern areas, and if it does, it is usually weak. On the contrary, The Mediterranean area receives larger amounts of water from convective or stormy precipitation.

The presence of DANA (previously called cold drops) and the flow of moisture-laden eastern air are the main factors that promote precipitation in the eastern part of the country, particularly during the autumn months, making it the rainiest season in this region. Analyzing the average number of rainy days in autumn, it is evident that Galicia and the Cantabrian region rain more frequently (approximately half of the days), while the south-southeast and the Canary Islands usually have less than 20 days of rain, depending on the prevailing weather conditions. The journey begins in stormy weather and concludes in turbulent conditions.

In regions where autumn is characterized by abundant rainfall, the wettest months of the season typically occur in September or October, consistent with the prevalence of convective precipitation during this time. Conversely, in areas where frontal precipitation plays a significant role, November, the last month of fall, experiences the highest levels of precipitation, marking the onset of winter conditions.

I hope that with this information you can learn more about which is the rainiest season in Spain and where it rains the most.

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