For some, the best time to visit the Columbia and Snake rivers is late April through June, and then again in September and October. Spring is peak bloom time for the Columbia River Gorge's wildflowers and orchards and the verdant landscapes along the shore are a sight to behold.
In Autumn the temperatures are not yet too chilly, but the transitioning colors are spectacular. October is also the ideal time for wine enthusiasts to visit, as this is when the harvest and crushing take place.
Summer is the most popular season to visit the Pacific Northwest because of the long sunny days, warm temperatures, and blue skies. So, the best time to set out on your Columbia & Snake Rivers cruise will depend on whether you like it hot, or if you prefer to witness the most colorful landscapes.