The best time to visit Arborg, Southern Region, Iceland, is during the summer months, from June to August, or in the shoulder seasons of May and September.During June, July, and August, you'll experience the mildest weather, with average temperatures ranging from 10°C to 15°C, and the longest daylight hours, often experiencing nearly 24 hours of daylight around the summer solstice. This period is ideal for exploring the natural landscapes, including nearby waterfalls like Seljalandsfoss and Skógafoss, and the black sand beaches of Reynisfjara. It's also the best time for activities such as hiking and horse riding.For those interested in the Northern Lights, the shoulder months of May and September offer a good balance. While the weather can be cooler and daylight hours shorter than in peak summer, there's a greater chance to see the aurora borealis as the nights become darker.