Munich route for 7 days for a group of friends

🌤 WEATHER SUMMARY & NUANCES: May in Munich is a "weather lottery." You can expect pleasant highs of +19°C, but the "Ice Saints" (Eisheilige) phenomenon in mid-May often brings sudden drops to +2°C. The Layering Rule: Mornings are crisp (+5°C), while afternoons can feel like summer. Wear a light waterproof shell over a fleece or sweater. Rain Check: May is one of the wettest months. Always have a "Plan B" (like the Pinakothek or BMW Welt) for the afternoon, as thunderstorms often roll in after 15:00. Beer Garden Etiquette: They are open! However, evenings get chilly fast. Look for tables with blankets or "Strahler" (heaters).