La Spring 2026 in Spain It arrives at a particularly turbulent meteorological time: we've just come through a winter with successive storms, an exceptionally rainy January, and reservoirs at levels unusually high for this time of year, and it's part of processes such as the to bring spring forwardAll of this greatly influences how the new season can develop both in the atmosphere and on the ground.
At the same time, the models of the main organizations —AEMET, ECMWF, Copernicus and NOAAThey paint a picture of a transitional scenario combining the end of La Niña, the possible entry into a neutral phase associated with El Niño, and a sudden, major stratospheric warming that has completely altered the polar vortex. The result is a spring that is expected to be warmer than normal, with highly irregular rainfall, high volatility, and abrupt weather changes that could cause more than a few scares for farmers, travelers, and anyone who frequently looks at the sky.
When does spring start and how long does it last?
From an astronomical point of view, the Spring begins with the equinoxThe exact moment when the Sun is positioned directly over the Earth's equator, and day and night are virtually the same length across the planet. This moment occurs in 2026. March 20 at 15:46 PM Peninsular Time, according to the National Astronomical Observatory.
The astronomical season lasts for a few 92 days and 18 hoursuntil June 21st, when the summer solstice is reached. During this period, the days gradually lengthen, with around about three additional minutes of daylight per day and an increase in the solar radiationThis is a detail that is very noticeable in everyday life, from work schedules to outdoor activities.
Instead, the meteorological spring It is defined differently: it starts on March 1st and ends on May 31st. This classification does not depend on the Earth's position relative to the Sun, but on statistical criteria that facilitate the climatic analysis of the months of March, April, and May as a homogeneous block, something very useful for studying temperature and rainfall trends.
During the equinoxes of March and September, the Sun crosses the celestial equatorThis results in an almost perfect equality between hours of daylight and darkness. This balance marks the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere, a change that is not only symbolic but is also reflected in atmospheric circulation, the distribution of air masses, and the behavior of storms.
Generally speaking, spring in Spain is usually a season of temperature fluctuations and abundant rainfallespecially in the northern half. The average temperature on the Iberian Peninsula is around 12,5 ºC, with a typical accumulated rainfall of around 185 mm, with March and April usually being the rainiest months of the season.
More daylight hours, time change, and outdoor life
In the slightly more than three months that the season lasts, the days are getting longer and longerThis is accompanied by an increase in temperatures and a gradual change in daily life. This increase in daylight is noticeable in small details: leaving work while the sun is still high, longer afternoons for walks or exercise, or terraces that are starting to fill up even on weekdays.
To all this is added the traditional change to summer timewhich in 2026 takes place on March 29. At 02:00 a.m. (01:00 a.m. in the Canary Islands), clocks are moved forward one hour, directly to 03:00 a.m. Until there is a final decision from the European Parliament and Commission, this time change system remains in effect, adding to the feeling of endless afternoons.
The arrival of spring is not just an astronomical matter; it is also a a profoundly social and cultural phenomenonIt is the time when trees and fields bloom, music festivals—such as Primavera Sound, Viña Rock or Interestelar Sevilla—begin, spectacular events such as the cherry blossom in the Jerte Valley are celebrated, and fairs and pilgrimages begin in many towns and cities.
This period also encompasses several key dates on the holiday calendarHoly Week (with Maundy Thursday and Good Friday as non-substitutable holidays), Labor Day on May 1st, Easter Monday in regions like Catalonia, and Madrid Community Day on May 2nd. Other holidays include Father's Day (March 19th), closely linked to Saint Joseph and the Valencian Fallas festival, and International Women's Day, celebrated on March 8th.
On an emotional level, spring is often associated with creativity, youth and rebirth After the winter dormancy, numerous studies indicate that the increase in daylight hours and slightly higher temperatures correlate with hormonal changes that improve mood, boost motivation, and ignite the desire to start new projects, both personal and professional.
The state of the atmosphere: polar vortex, Arctic ice, and oceans
The seasonal forecast for spring 2026 is based on a particularly complex atmospheric context. One of the most relevant factors is the presence of a major stratospheric sudden warming which has caused the collapse of the stratospheric polar vortex. This phenomenon involves a reversal of the westerly winds at higher altitudes and an extreme weakening of the circulation in the stratosphere.
The graphs from the European ECMWF model show that the the polar vortex is heavily eroded and with little capacity to return to a “normal” state for the remainder of the cold season. This disruption favors the formation of blocking patterns at high latitudes, allowing masses of very cold air to descend more easily towards temperate zones such as Western Europe and, by extension, the Iberian Peninsula.
This pattern is further compounded by the fact that the extent of sea ice in the Arctic It has been well below the climatic average all winter. At times, the ice has even begun to recede before reaching its seasonal maximum, which is not a good sign from the perspective of atmospheric stability in the Northern Hemisphere.
A smaller ice surface in polar latitudes increases the probability of persistent atmospheric blockingThese features deflect the jet stream and facilitate the arrival of cold air troughs at mid-latitudes. In other words, they open the door to episodes of unsettled weather, with late cold snaps, rainstorms, and snow in the mountains well into spring.
Regarding the sea surface temperature surrounding the Peninsula, the situation presents moderate thermal anomaliesAfter the passage of numerous storms and successive maritime-polar advections in winter, some areas near the coast have values close to the average or even slightly below, while the Canary Islands, sectors of the Mediterranean and the eastern Cantabrian Sea show slightly warmer waters.
This configuration reduces the potential energy and moisture of rainfall compared to other recent times when the sea was very warm, but it is not a decisive factor that completely changes the rainfall forecast.
Transition from La Niña to neutral phase and possible influence of El Niño
Another key background element is the evolution of ENSO phenomenon in the PacificAfter several consecutive La Niña episodes that marked years with a tendency towards somewhat lower temperatures in some regions of the planet, 2026 is interpreted as a transition year towards a neutral phase and even with indications of a possible new El Niño episode as summer progresses.
AEMET and NOAA agree that, upon leaving La Niña and entering a scenario without a clear dominant pattern, the atmosphere tends to become more volatile and unpredictableThis neutrality favors abrupt changes, alternating very different situations in a matter of days, and makes it more difficult to establish solid trends in precipitation in the medium and long term.
In Spain, the relationship between El Niño or La Niña and the weather we ultimately have is indirect and noisySignals from the Pacific are mixed with other influences, such as the state of the Arctic, stratospheric warming, and the oscillations inherent to the North Atlantic. Therefore, although ENSO may slightly tip the balance, it cannot be used as the sole basis for making a seasonal forecast.
What does seem clear is that 2026 acts as a kind of year of “climate reset”This is a spring in which many pieces of the puzzle are rearranged on a large scale. Without the intense forcing of a strong La Niña event, the result is a spring with more room for surprises, both in the form of early warm spells and late cold snaps.
European models, including ECMWF and Copernicus, also point to the influence of a major stratospheric sudden warming which, by weakening the polar vortex, favors a less organized pattern and a greater tendency towards episodes of instability, especially through troughs and DANAs that can leave showers and intense storms locally.
Temperatures: Spring warmer than normal
The State Meteorological Agency's forecasts are clear: there is a very high probability, between 60% and 70%The forecast is that spring 2026 will be warmer than usual across much of Spain. This positive temperature anomaly will be particularly noticeable in the interior of the Iberian Peninsula, the archipelagos, and the Mediterranean coast.
In the Canary Islands and the southwest of the Peninsula, AEMET estimates around one 50% probability of a warm quarter, compared to a 20% chance of it being colder than normal. In the rest of the Peninsula, that percentage rises to 60%, and in the Balearic Islands it reaches 70%, with a very small margin (around 10%) for a scenario colder than climatologically expected.
International models such as those of ECMWF and Copernicus support this picture, pointing to a quarter dominated by high temperatures and with a very strong warm signal, especially in coastal areas and the islands. Some seasonal products even point to a near 100% probability that the April-May-June period will be above average in the Balearic Islands.
This doesn't mean we'll escape the typical ups and downs of the season. Spring is, by definition, a time of sudden temperature changesThe combination of cold air at high altitude, damp soils, and increased solar radiation can lead to both occasional cold outbreaks and episodes of early summer heat, especially on the Mediterranean coast and the Balearic Islands.
The fact that the winter has been exceptionally wet and that the soils retain a lot of water may soften the effects at certain times. more extreme thermal contrastsHowever, this does not appear to be enough to counteract the overall trend toward a warmer environment. Furthermore, the potential transition to a new El Niño event this summer would, in the medium term, reinforce the likelihood of very high temperatures in the second half of the year.
Rainfall: irregular rains and a strong presence of thunderstorms
While the warm signal is quite clear, the rain complicates the picture. Different seasonal forecast models show a... almost total absence of dominant trend in much of the country, especially during April and May. In terms of probability, there's a roughly 33% chance: it's just as likely to rain more than expected, as it is to rain the normal amount, or even less than expected.
The only partial exception occurs in The Canary Islands and the southwest of the Iberian Peninsulawhere there is a slight preference for a somewhat drier than normal quarter (around a 40% probability of dryness compared to a 25% probability of wetness). Even so, this signal is weak and does not allow us to assume a scenario of intense drought in those regions.
By the start of meteorological spring, that is, in March, the following is expected to continue: humid inertia on the Atlantic slopeEspecially in Galicia, Extremadura, and western Andalusia. Active storms could still arrive, with well-organized fronts bringing scattered rain and snow at relatively high elevations in the mountain ranges.
However, as we move into April and May, the pattern becomes much more erratic. The atmosphere, influenced by the neutral phase of ENSO and by stratospheric warming, tends to to generate local storms, intense downpours, and very strong contrasts between regionsIt is perfectly plausible that one area may experience several episodes of heavy rain while another, just a few kilometers away, has weeks of dry weather.
Several independent analyses even point to a relatively rainy spring across SpainRainfall will be slightly above average, especially inland, in southern Spain, along the Mediterranean coast, and in Ceuta, Melilla, and the Canary Islands. In this scenario, thunderstorms will be the main feature, with a significant probability of hail, strong gusts of wind, and intense downpours concentrated in short periods.
Pulses of cold air, DANAs and late snowfalls
The blocking pattern at high latitudes, associated with the weakening of the polar vortex and the scarcity of sea ice, makes it easier for troughs of cold air descend towards the Peninsula during different phases of spring. These cold intrusions, when they encounter warmer, more humid air near the surface, trigger instability and fuel the formation of storms and secondary lows.
They are still expected to arrive storms with considerable energyThese storms will be accompanied by active fronts, although the increasing intensity of the sun will mean that, as the weeks go by, daytime storms will become more prominent than purely frontal episodes. It is possible that some of these low-pressure systems will be associated with cut-off lows (Isolated Depressions at High Levels) capable of triggering intense rainfall in the Mediterranean area.
In the mountains, everything points to the snow will still be present in the mountain ranges For much of the season, with the possibility of late snowfalls approaching the start of summer. These situations usually occur when a pocket of very cold air descends over the Iberian Peninsula and coincides with humid air at lower levels.
In Mediterranean regions, this type of configuration increases the risk of episodes of torrential rainEspecially if the sea temperature rises and a cut-off low combines with moisture-laden winds. Although the seasonal forecast cannot specify dates, it does indicate that the atmospheric pattern is compatible with events of intense and localized rainfall.
It is important to emphasize that these trends refer to the overall behavior of the season. Seasonal forecasts are not useful for anticipating specific phenomena. such as a DANA storm in a particular week, a specific heat wave, or a snowfall event on an exact date. For that, you'll always have to rely on short-term forecasts, which deal with timeframes of days, not months.
The role of traditional methods: cabañuelas and frost warnings
Alongside numerical models, in recent years the following have gained visibility: traditional prediction methods, such as the cabañuelas. Some popularizers, including Jorge Rey, have made public specific forecasts for the beginning of spring 2026 based on this type of observation.
According to these interpretations, the month of March could begin with a very active storm This would bring a significant drop in temperatures, snowfall at relatively low elevations, and a high risk of late frosts. This scenario would clash with the more pleasant image many people have of spring, when winter is considered over.
Frosts in late winter or early spring are especially worrying for the agricultural sectorAfter mild spells in February, many fruit trees and sensitive crops may already be in bloom or budding. A cold front at that time can ruin much of the harvest in a matter of hours, with damage that doesn't recover until the following season.
Interestingly, although the cabañuelas and physical models use very different approaches, both coincide in highlighting the high variability and the risk of abrupt changes during the start of spring in 2026. This coincidence reinforces the idea that it is advisable to follow the daily forecasts in detail and to be extra vigilant in vulnerable sectors such as agriculture and livestock.
Impact on agriculture, health, and daily life
For farmers and ranchers, the spring that is shaping up for 2026 is a mix of opportunities and threatsThe starting point is very favorable: soils with high moisture content, well-supplied reservoirs, and pastures that, in theory, should develop vigorously and improve the climatic habitat of forests and rivers after the wettest winter in the last 25 years.
However, the combination of Irregular rainfall, severe storms, and risk of late frosts This can complicate campaign planning. Tasks such as sowing, phytosanitary treatments, or certain harvesting operations can be disrupted by episodes of heavy rain or unexpected cold, requiring more flexible management and close monitoring of weather reports.
From a health perspective, spring brings with it an increase in pollen levels in the airespecially from grasses, olive trees, and other species widespread in Spain. Millions of people suffer allergy symptoms—rhinitis, conjunctivitis, asthma—which can worsen on windy and dry days and be partially relieved after rain that “cleanses” the atmosphere.
The changeable weather is also noticeable in daily life. It's a season where it's common to go from an almost summery afternoon to a sudden drop in temperature in just a few hours, forcing you to bring out the... jacket and umbrellaThese surprising changes are behind so many spring colds and the need to check transitional clothing almost daily.
In cities and tourist destinations, spring represents a ideal time for getawaysRural trips, hiking trails, or visits to popular festivals like the April Fair, San Isidro, or the Patios of Córdoba are all good options. Furthermore, as it's the period before summer, many areas experience fewer crowds than in July or August, which favors a more relaxed tourism experience and often better prices.
Taking all these factors together—anomalous heat, unpredictable rainfall, longer daylight hours, and a particularly turbulent atmosphere—spring 2026 in Spain is shaping up to be a season warm, highly variable and full of contrastsThe key will be adapting quickly: from the agricultural sector, which will have to monitor frosts and storms, to those planning trips or outdoor activities, who will have to be attentive to a sky capable of changing mood in a matter of hours.
