The shoulder seasons of May and September present a sweet spot for travelers seeking a balance between summer and winter extremes. During these months, you can expect milder weather, making outdoor explorations comfortable and enjoyable. Additionally, fewer crowds allow for a more intimate experience of Iceland's attractions, while still providing increased chances of catching the Northern Lights compared to peak winter months. It's also an excellent time to discover hidden gems and immerse yourself in cultural festivals to connect with Iceland's rich heritage.