The short answer
For most travelers, spring and fall are the best seasons for a Mississippi River cruise. Temperatures are milder and humidity is lower than in summer. The best months depend on which stretch of the river you plan to sail: the lower river from New Orleans to Memphis is available for much of the year, while the upper river from St. Louis to St. Paul is mainly a summer and early-fall season.
Lower Mississippi (New Orleans to Memphis)
The lower river is the longest cruising season. Sailings generally run most of the year, with a gap in deep winter, roughly mid-January to late February on some schedules.
- Often best: about April to mid-June, and again from September through December.
- Spring brings blooming gardens and comfortable temperatures, though higher water and flood risk can occasionally change plans.
- Fall and early winter bring milder weather and festive events, including holiday-themed sailings.
- Watch out for: July and August, when temperatures often exceed 90°F and humidity is high. This makes shore excursions less pleasant.
For more on the route, see Mississippi River cruises from New Orleans.
Upper Mississippi (St. Louis to St. Paul)
The upper river is seasonal because winters are cold and icy.
- Cruising season: roughly June to early October.
- Summer is warm and a popular choice for families during school holidays.
- Early autumn is a favorite for fall color, with peak foliage typically from late September to mid-October, though timing varies each year.
- Watch out for: shoulder-season weather, which can be cooler in early June and in October.
Season by season
- Spring (March to May): pleasant on the lower river, with a chance of high water. The upper river is mostly not yet in season.
- Summer (June to August): upper river in full swing; lower river hot and humid.
- Fall (September to November): often the best overall, with comfortable weather and foliage on the upper river.
- Winter (December to February): lower-river holiday cruises are available, while the upper river is closed. Mid-January to late February can have few or no sailings.
Holiday and winter sailings
Some lines offer themed lower-river cruises around Thanksgiving, Christmas and New Year, with decorations and seasonal events. They can be popular and may cost more, so book early.
Weather and river conditions to plan for
- Heat and humidity: pack light breathable clothing, sun protection and water for summer cruises.
- Cool evenings: bring layers in spring and fall, since breezes on deck can feel cooler than on land.
- High or low water: river levels can change stops or routes, and cruise lines may adjust itineraries. Check each line’s policy on changes.
- Hurricane season: Gulf Coast storms are most likely between June and November and can affect New Orleans.
How to choose
- Want mild weather and fewer worries? Pick April or May, or October and November, on the lower river.
- Want fall color? Choose a late-September or early-October upper river sailing.
- Want the lowest cost? Look at shoulder months and compare fares, and see how much a cruise on the Mississippi costs.
- Short on time? Review how long Mississippi cruises take before locking in dates.