I filmed Basel in the snow in 2022 and came back with my friend Bobby in 2025. We filmed here before continuing to the Alsace markets. The two main markets are close enough to enjoy together, with the cathedral, the Town Hall courtyard and views over the Rhine giving you plenty to see between the stalls.
In 2025 I started my evening walk before sunset and returned to Münsterplatz after dark. That is how I would plan a visit too—leave time for the town in daylight, then come back for the lights. You do not need to rush straight from one market to the next.