Geysir in July

May through September offers the best conditions — longer daylight hours, warmer temperatures, and accessible hiking trails. July and August bring midnight sun and the warmest weather, but also the biggest crowds and highest accommodation prices. June and September hit the sweet spot with decent weather and fewer tour buses. Early morning visits (before 9 AM) or late afternoon (after 5 PM) help you avoid the Golden Circle rush. Strokkur erupts every 5-10 minutes regardless of season, so you're guaranteed a show. Winter visits work fine for the main geothermal area since the walkways are maintained, but the Laugarfjall hiking trail becomes challenging with ice and snow. The contrast between hot springs and snow-covered landscape creates dramatic photos, though. Sunrise and sunset provide the best lighting for photography — the steam creates atmospheric effects when backlit. Weather can change rapidly, so check conditions before driving. Route 35 (the Golden Circle road) stays open year-round but can be icy in winter.