Weather in Iceland in September

The mildest conditions in September are generally found in the south-west and along the sheltered coasts, though temperatures remain cool by most standards.

• Reykjavik: Reykjavik is the mildest and most sheltered base in the country in September, with daytime temperatures typically around 8 to 12°C on a clear day. The compact city lies close to the sea, so sea breezes keep the air fresh while rarely making it bitter. Its harbour, museums and restaurants stay open through the month, making it a comfortable place to start and end a trip. We recommend it as the easiest base for a first visit when you want to keep flexible plans. It is exactly the brief our Reykjavik holidays deals are built around.
• Reykjanes Peninsula: The Reykjanes Peninsula sits just west of the capital and tends to be milder and drier than the highlands, which makes it a practical area for a September visit. The Blue Lagoon lies here in a lava field, and its warm water is a welcome contrast on a cooler afternoon. Keflavik Airport is close by, so arrivals and departures are easy to plan around the weather. Conditions can still turn windy, so we advise checking forecasts before heading out.
• Golden Circle: The Golden Circle route runs roughly 300 km from the capital and is one of the most visited circuits in the country, with its stops generally accessible in September. Thingvellir, Geysir and Gullfoss sit in the south-west, where the weather is typically milder than in the north. A single day on this route suits travellers who want to see several sites without long drives. Shorter daylight means setting off early, which we build into the itinerary. It is exactly the brief our Iceland holidays deals are built around.
• Snaefellsnes Peninsula: The Snaefellsnes Peninsula sits in west Iceland, two to three hours from the capital, and its coastline is generally a little less exposed than the far north. The glacier-capped Snaefellsjokull volcano dominates the view and makes a striking backdrop in clear September weather. Small harbour villages offer shelter for an afternoon stop. Cloud and wind can still arrive quickly, so we suggest keeping your plans loose for the day.
• Stykkisholmur: Stykkisholmur is a small town on the Snaefellsnes Peninsula, with a harbour that serves as a ferry port for the wide western bay. Its sheltered position makes it a calmer base than many exposed coastal spots in September. Boat trips from the harbour suit travellers who want to be on the water without heading far from town. Services are limited compared with the capital, which is why we pair it with a city stay when the trip allows.