When is the best time to wakesurf at Mark Twain Lake By Hwy J?

The best time to wakesurf at Mark Twain Lake By Hwy J, a reservoir in Missouri, is May–September. That window covers May, June, July, August, and September — the months when local air temperatures are warm enough to make a session comfortable.

This season is derived from Open-Meteo 2019–2023 daily-high climatology, not from a forecast or a single year, so it reflects the typical warm-weather pattern for the area rather than this week's weather. Water temperature lags air temperature, so the early edge of the window can still feel cold without a wetsuit.

Within that season, mornings are usually the calmest time on the water — less wind and less boat traffic mean a cleaner wave. Always check the live forecast and the local rules before you head out.