{"contractVersion":1,"interpretation":"Historical regional model comparison, not a weather forecast or accommodation-level guarantee.","synthetic":false,"article":{"publishedAt":"2026-10-29T11:49:53.879Z","modifiedAt":"2026-10-29T11:49:53.879Z","scope":{"regionCount":25,"referencePeriod":"1991–2020","window":{"start":"2027-07-10","end":"2027-07-19","durationDays":10},"heatThresholdC":31},"provenance":{"snapshotId":"1640377e-f98b-4a2c-8632-f90265c6bc54","releaseId":"c79a353c-4e1a-4a2c-8f3c-c147bfb80cfc","releaseKey":"copernicus-expanded-20261029-25-v1","manifestSha256":"5a718a940e9bed76fceb4208dc9cece3eea1715d77cca742eb209ff31703ad15","methodVersion":"era5-land-local-day-v1.0.0@1.0.0","dataset":"reanalysis-era5-land-timeseries@2026-09-07.launch-backfill-v1","sourceUrl":"https://cds.climate.copernicus.eu/datasets/reanalysis-era5-land-timeseries?tab=overview","automationVersion":"public-climate-news-v1","attribution":"Contains modified Copernicus Climate Change Service information 2026."},"slug":"koeler-op-vakantie-regen-verschilt","angle":"rain_tradeoff","title":"Vergelijkbare warmte, 2,2 regendagen verschil","summary":"Bretagne en Zwarte Woud liggen voor dezelfde juliperiode binnen 1,5°C van elkaar, maar hun historische modelgemiddelde voor regendagen verschilt duidelijk.","quote":"Binnen de 25 onderzochte regio's verschillen Bretagne en Zwarte Woud voor 10–19 juli 2,2 regendagen bij maximaal 1,5°C verschil in gemiddeld dagmaximum. Bron: ERA5-Land 1991–2020; geen weersverwachting.","paragraphs":["Een lagere temperatuur vertelt niet hoeveel regen je kunt verwachten. Daarom zocht deze vooraf vastgelegde vergelijking naar paren met hooguit 1,5°C verschil in gemiddeld dagmaximum. Van die paren laat de tekst het grootste verschil in gemiddelde regendagen zien. Alle 25 regio's staan in de tabel, zodat de selectie controleerbaar blijft.","Bij Bretagne zijn dat gemiddeld 3,1 dagen met minstens 1 mm neerslag in het tiendaagse modelvenster; bij Zwarte Woud 5,3. Een regendag kan ook een dag met een korte bui zijn. De maat zegt niet dat het die volledige dag regent en beschrijft evenmin de volgorde of de intensiteit van buien.","Voor wie wandelen, buiten eten of een strandbezoek belangrijk vindt, is dit een nuttige tweede vraag na temperatuur. Wie musea, steden of een flexibel programma zoekt, kan dezelfde afweging anders maken. Reanalyse kan lichte neerslag anders weergeven dan een lokaal meetstation; gebruik de modelverschillen als planningscontext, niet als belofte over jouw adres."],"takeaway":"Twee even warme regio's kunnen een andere regenafruil hebben. 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