The best time to go to Kelso, California, is during the cooler months, from late autumn to early spring, specifically October through April.During these months, the desert temperatures are much more pleasant for outdoor activities, typically ranging from 15°C to 25°C during the day. This makes exploring the Kelso Dunes, hiking the various trails, and visiting the historic Kelso Depot more enjoyable. The extreme heat of summer (May to September), often exceeding 35°C, can make outdoor exploration uncomfortable and even risky.Couples looking for a peaceful escape and outdoor enthusiasts will find this period ideal. The cooler weather allows for comfortable stargazing, photography, and extended hikes without the intense sun.