A hot air balloon normally flies early in the morning and late in the evening. But it is more generally in the spring and summer periods.
In winter, we rarely have thermal phenomena that make it impossible for hot-air balloons to fly. We may indeed fly there around mid-day. An interesting period also for future pilots who can discover the joys of climbing with temperatures below 0°C. And for photo enthusiasts, to immortalise landscapes whitened by snow.
In Lorraine, you can fly in all seasons.