The best time to go to Cathlamet is during the summer months, from June to September, when the weather is at its finest.During this period, you can expect warm, sunny days with minimal rainfall, which is great for enjoying outdoor activities. The average daily temperatures typically range from 20°C to 25°C, making it pleasant for exploring the Columbia River or the surrounding natural areas.This time of year is particularly good for families looking to enjoy the natural beauty and recreational opportunities. The calm river conditions are ideal for kayaking, fishing, or simply relaxing by the water. Many local events and festivals also take place in the summer, offering additional activities for everyone.Couples will also appreciate the summer months for romantic strolls along the waterfront or enjoying a quiet evening with picturesque sunsets over the river.