Overview

• The Eisheiligen, traditionally observed from May 11–15, mark the last potential frost period of spring and are rooted in both religious and agricultural traditions.
• The Deutscher Wetterdienst (DWD) reports that frost risk in southern Germany has dropped below 50% due to climate change, which has advanced vegetation periods by up to three weeks.
• Meteorologist Dominik Jung warns that ground frost remains possible on clear nights through the end of May, despite warmer daytime temperatures and reduced historical frost probabilities.
• The 100-year calendar predicts significant rainfall from May 7–16 and a potential late-May cold snap around May 23, underscoring divergent forecasting models for 2025.
• Gardeners are advised to protect frost-sensitive plants during this period using fleece, brushwood, or specialized films, while delaying planting of tender crops until after mid-May.