Briefing
The Agencia Vasca de Meteorología, Euskalmet, reports that on Sunday, 27 September 2026 much of Euskadi will see a mix of sunshine and cloud. After some local breaks in the cloud in the morning, the likelihood of convective cloud will increase from the afternoon, with isolated brief showers and isolated thunderstorms possible. The trend affects both coastal areas and inland, although significant local and temporal variations are expected.
For Cantabrian coast the forecast points to particularly changeable conditions: northerly winds will often strengthen there in the afternoon, and, together with short-lived disturbances in the upper atmosphere, may encourage showers to form. Thunderstorms may bring brief periods of heavy rain, isolated squalls and a noticeable drop in temperature where rain falls; unusually severe or widespread storms are not currently expected.
Euskalmet notes that weather models have limited spatial resolution and that the precise development of showers is often determined at short notice. The agency therefore recommends checking current nowcasting services and local warnings shortly before outdoor activities. Euskalmet publishes separate marine forecasts for sea areas, which may differ from the land forecast.
Only minor temperature changes are expected compared with the previous day: nights will remain relatively mild, with little change in daytime temperatures. Wind and rainfall, however, may vary considerably from place to place. The forecast from Europa Press refers specifically to the region of Basque Country and should not be extrapolated to all of Spain without further confirmation.
In summary, changeable weather is expected in Euskadi on Sunday, with showers and isolated thunderstorms most likely in the afternoon and evening. It is advisable to keep monitoring short-range forecasts so that you can respond to rapidly changing local conditions.
Editor: Andreas M. Brucker (Article created with AI assistance).