Luxembourg Weather

Luxembourg packs a lot of variety into a small space, with a climate that shifts from chilly and damp in winter to pleasantly warm in summer. Expect cool mornings in the spring and autumn months, while summer can surprise you with its comfortable heat and long daylight hours. The weather is stable across the country, with no coastal or island regions to complicate your packing list.

You’ll notice the seasons here aren’t shy - each one brings a clear change in sunshine, temperature, and rainfall. While you won’t find tropical vibes or Mediterranean heat, Luxembourg’s weather is ideal for relaxed outdoor exploring, especially in the green valleys and rolling hills that light up under the summer sun.

Spring (March - May): Spring starts brisk, with March barely scraping double digits at 10°C, but Luxembourg warms up quickly. By May, you’re looking at 19°C and a solid 7 hours of sun a day - perfect for stretching your legs after winter. Rain is moderate and the air feels fresh and comfortable, making it easy to get out and about.

Summer (June - August): Summer is when Luxembourg shows off. Temperatures hit a comfortable 22 to 24°C in June, July, and August, and you’ll get 8 hours of sunshine a day. It’s peak time for picnics and riverside strolls. Humidity stays manageable, but keep an umbrella handy - rainfall doesn’t take a holiday here.

Autumn (September - November): Autumn cools things down, with September still hanging onto summer’s warmth at 19°C before slipping to 8°C by November. Rain picks up, and daylight drops off, so you’ll want to make the most of those crisp, clear days when they show up. Bring a jumper - you’ll need it in the evenings.

Winter (December - February): Winter is best described as chilly and damp. December to February hovers between 3 and 5°C, with short days and plenty of cloud cover. Rain is steady, and sunshine is a rare treat. If you like cosy vibes and don’t mind a bit of drizzle, this is your season. Just don’t expect a whopper of a heatwave.

If you’re hoping to squeeze in some sunbathing alongside your city exploring, aim for late spring to late summer - May through August. This is when Luxembourg offers its warmest weather, peaking at 24°C in July and August, and delivers the longest days with up to 8 hours of sunshine. You won’t get Mediterranean beach weather, but these months are as close as it gets to top-tier for enjoying Luxembourg’s riversides and outdoor cafés. Just keep in mind, the country is landlocked, so you’ll be swapping sandy beaches for rivers and lakes with a leafy backdrop. You’ll still find plenty of locals making the most of a delish summer’s day.