The best time to go to Sarpsborg is generally during the summer months, from June to August, when the weather is at its most pleasant for outdoor activities.During this period, Sarpsborg experiences its warmest temperatures, typically ranging from 15°C to 25°C, with longer daylight hours. This makes it ideal for exploring the town's natural surroundings, such as the Sarpsfossen waterfall or the recreational areas along the Glomma river. Couples and families will find these months superb for enjoying boat trips, hiking, or simply relaxing in the many parks.Late spring, particularly May, also offers good conditions with blooming nature and fewer crowds, though temperatures are cooler. Early autumn, in September, can be beautiful with changing foliage, but the weather becomes more unpredictable, with cooler temperatures and a higher chance of rain.