When to go to Luxembourg, depending on what you're after

You can visit Luxembourg in any month, but it isn’t the same trip in each. The capital works all year. The north, the Mullerthal and the Moselle depend far more on daylight, on seasonal opening and on the festival calendar. This is how I’d pick a date.

The short answer is May or September

Asked without any other detail, I say May or September. Both are mild at Findel (13.5°C and 14.3°C, around 56 to 58°F), both are bright (226.3 and 174.9 hours of sunshine) and both have the seasonal sights open, from the Vianden chairlift to the swimming lakes, which the national portal says usually run from 1 May to 30 September. May also sits well clear of Luxembourg’s summer school holidays, which in 2027 run from 16 July to 14 September, so early September still overlaps with them.

May has the Octave until 2 May 2027 and the ING Night Marathon on the 8th. September brings the grape harvest and the Moselle’s wine festivals. Either makes a good first trip.

What if I only want the capital?

Then any month works, and winter gains ground. Winterlights takes over the city for six weeks, 20 November 2026 to 3 January 2027, with Christmas markets across the centre, and the museums, the cathedral and the casemates don’t care about the weather. What you lose is light. December manages 41.9 hours of sunshine and more than eleven foggy days, and afternoons end early. For a city weekend that doesn’t bother me. For combining with the north, it does. Given the choice, I’d go for the last week of Luxembourg in November, when the first markets overlap with the Fête des Vins et Crémants on 27 to 29 November.

Once your dates are set, check which hotels are still free in Luxembourg before prices climb.

By activity

For walking in the Mullerthal or the Ardennes, April, May, June and September. April is the driest month at Findel (49.4 mm), and from 1 April the Move We Carry service listed by Visit Luxembourg carries your bags between stages. July and August are fine for walking too, but they’re the stormiest months, as I explain in Luxembourg in July.

For seasonal castles and museums, April to October. In 2026 the Vianden chairlift ran from 4 April to 19 October and The Family of Man, in Clervaux, from 18 March to 1 January. For wine, September and October, with Schengen’s Hunnefeier on 18 October 2026 closing the harvest, which I cover in Luxembourg in October. For swimming, 1 May to 30 September at the approved lakes.

Festivals worth planning around

Four dates would make me move a trip. National Day, with its eve on 22 June (torches and fireworks from the Adolphe Bridge) and the day itself on the 23rd. The Schueberfouer, the capital’s great funfair, from 20 August to 8 September 2027 on the Champ du Glacis. The Octave of Our Lady, between 17 April and 2 May 2027, with its market on Place Guillaume II. And Echternach’s dancing procession, listed by UNESCO as intangible heritage and always held on Whit Tuesday. They’re all in the Luxembourg events calendar.

Once your dates are set, check which hotels are still free in Luxembourg before prices climb.

Public holidays to keep an eye on

Of the country’s 11 public holidays, three hit travellers hard. On New Year’s Day, 1 May and Christmas Day the law keeps shops shut, bakeries and patisseries aside, according to guichet.lu. On the other holidays shops can open with Sunday hours at most, 5:00 to 19:00. In 2027 May stacks up four of them (the 1st, Ascension on the 6th, Europe Day on the 9th and Whit Monday on the 17th), so that month I’d book early and check each sight’s hours day by day. The season changes your suitcase too, which I cover in what to pack for Luxembourg.

Getting there from the UK, whatever the season

Luxair publishes a Luxembourg to London City route, while the airport’s list of 16 airlines includes British Airways, easyJet and Ryanair. Timetables shift between winter and summer and there’s no official list of UK routes I can quote, so check when you book. By rail, the TGV from Paris takes 2 hours 10 minutes. From the airport, tram T1 and buses 16 and 29 reach the city free of charge. Bear in mind that as a British visitor you’ll be registered in the EES at your first Schengen border, so allow a little more time on arrival.

If you would rather have a local show you round, book a guided tour in Luxembourg and choose by the reviews.

Months I’d avoid, or not

I wouldn’t rule any month out, but January and February are the hardest outside the capital, averaging 1.4°C and 2.2°C with little light. August has good weather but coincides with school holidays across much of Europe and the hottest days; Findel’s record is 39.0°C, on 25 July 2019.

The month-by-month weather, records included, is in Luxembourg weather. If you already know the season, start with Luxembourg in spring or Luxembourg in autumn and work down to your month, such as Luxembourg in May.

A car frees you from timetables: search car hire in Luxembourg on DiscoverCars and compare companies.

So you do not pay over the odds, look at trains, coaches and flights to Luxembourg on Omio and pick the one that suits you.