This lowland segment of the Sultan’s Trail runs between Budapest and Belgrade across open levees, riverside embankments, and farm tracks, with limited shade and surfaces that can turn muddy after rain. April, May, and September align with steadier temperatures, usable daylight, and fewer abrupt swings than midsummer thunderstorms or the damp chill of winter. Outside those windows, expect periods of heat and humidity with fast-moving storms, or colder spells with overcast skies, rain, sleet, and occasional snow.