Climate guide for Luxembourg City, Luxembourg

Best Time to Visit
Luxembourg City

How to read the score (0–10)
05810
UnfavorableGoodOptimal
01 · Luxembourg

About Luxembourg City

Above the Alzette and Pétrusse gorges, the old town sits on a plateau connected by bridges and steep paths down to the Grund quarter. The Bock casemates and the Chemin de la Corniche show how the fortifications used the cliffs, and the Grand Ducal Palace stands a few minutes away. June through August is the warmest window for the viewpoints and outdoor cafés; the city is compact enough to cover on foot in any season.

02

Did you know?

03

Travel Tips

01Casemates Cool Hours
Bock Casemates are a cool midday refuge in summer. Chemin de la Corniche is loveliest in late afternoon light.
02Free City Buses
Local buses are free nationwide - hop without tickets inside the city. The old town and Grund valley are connected by lifts and stairs.
03Museum & Casemate Fees
Casemates and major museums charge modest fees; outdoor viewpoints along the corniche are free. EU quarter sights are mostly exterior viewing.
04Valley Climbs & Weather
Expect stairs between Ville Haute and Grund. Weather shifts quickly in the gorge - a compact umbrella earns its keep.

Things to do in Luxembourg City

Luxembourg City, Luxembourg. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Luxembourg City: the short answer

Plan Luxembourg City for June, with July, August close behind — the stretch with the most usable temperatures and the fewest lost days to rain: June averages 18°C with 52 mm of rain and about 27 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are January, December. If budget matters more than perfect weather, February is the strongest of the low-rate months at 5.4/10.

Across the year Luxembourg City swings from 2°C in January to 19°C in August, a 17-degree spread, while rainfall ranges from 52 mm in June to 101 mm in November. In short, Luxembourg City is not equally good year-round — the gap between its best and worst month is 5.5 points on the same 10-point scale.

Warmest month: August (19°C). Coolest: January (2°C). Driest: June (52 mm). Wettest: November (101 mm).

Luxembourg City month by month

January in Luxembourg City: expect compromises

Hardest · 3.9/10

At 2°C (36°F) this is proper winter weather in January: layer up and split the day between outdoor highlights and indoor stops.

Budget for roughly 98 mm of rain this month — a flexible day or two helps — with about 6 days with 6+ hours of sunshine and 8.7 hours of daylight to work around it.

That is 3.9/10 on the same scale — 12th of 12 months, versus 9.4/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

If your dates are flexible, June is materially better in Luxembourg City — 5.5 points higher on the same scale.

February in Luxembourg City — workable with trade-offs

Trade-offs · 5.4/10

Expect 5°C (41°F) in February. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 77 mm of rain this month — a flexible day or two helps — with about 12 days with 6+ hours of sunshine and 10.1 hours of daylight to work around it.

That is 5.4/10 on the same scale — 9th of 12 months, versus 9.4/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Luxembourg City — 4 points higher on the same scale.

March in Luxembourg City — middling scores, decent value

Trade-offs · 6.4/10

March averages 7°C (44°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 87 mm, so plan one flexible day in three; you still get about 19 days with 6+ hours of sunshine and 11.9 hours of daylight.

It scores 6.4/10 here, 8th of 12 months, against 9.4/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? June scores 3 points higher here — enough to change the trip.

April holds up well in Luxembourg City — 6th best month

Good · 7.6/10

Expect 8°C (47°F) in April. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 67 mm of rain this month — a flexible day or two helps — with about 23 days with 6+ hours of sunshine and 13.8 hours of daylight to work around it.

That is 7.6/10 on the same scale — 6th of 12 months, versus 9.4/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Luxembourg City — 1.8 points higher on the same scale.

May in Luxembourg City — reliably good (4th best month)

Good · 8.3/10

May averages 14°C (57°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

Rainfall runs 78 mm, so plan one flexible day in three; you still get about 27 days with 6+ hours of sunshine and 15.4 hours of daylight.

It scores 8.3/10 here, 4th of 12 months, against 9.4/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

June in Luxembourg City — the year's strongest window

Best window · 9.4/10

Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 52 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 16.2 hours of daylight to work around it.

On our climate-comfort scale this is the top-ranked month of the year for Luxembourg City at 9.4/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

July in Luxembourg City — one of the year's strongest windows (2nd)

Best window · 9.2/10

Temperatures hover around 19°C (66°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 62 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 15.8 hours of daylight to work around it.

On our climate-comfort scale this is one of the strongest months of the year for Luxembourg City at 9.2/10 (2nd of 12), just behind June at 9.4/10.

Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

August ranks 3rd of 12 for Luxembourg City — one of the best windows

Best window · 8.9/10

August averages 19°C (67°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Rainfall runs 69 mm, so plan one flexible day in three; you still get about 29 days with 6+ hours of sunshine and 14.4 hours of daylight.

A 8.9/10 puts this among the year's best months in Luxembourg City (3rd of 12); only June scores higher, at 9.4/10.

Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection, a packable rain layer.

September in Luxembourg City: strong conditions, 5th of 12

Good · 8.2/10

September averages 15°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

Rainfall runs 87 mm, so plan one flexible day in three; you still get about 26 days with 6+ hours of sunshine and 12.6 hours of daylight.

It scores 8.2/10 here, 5th of 12 months, against 9.4/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

October in Luxembourg City — middling scores, decent value

Trade-offs · 6.8/10

Temperatures hover around 12°C (54°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 99 mm of rain this month — a flexible day or two helps — with about 19 days with 6+ hours of sunshine and 10.8 hours of daylight to work around it.

That is 6.8/10 on the same scale — 7th of 12 months, versus 9.4/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

If your dates are flexible, June is materially better in Luxembourg City — 2.6 points higher on the same scale.

November in Luxembourg City — off-season conditions

Hardest · 4.6/10

Expect 7°C (44°F) in November. A good month for city streets, viewpoints and long meals; leave swimming for another season.

101 mm of rain signals a properly wet month, with only about 6 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 4.6/10 on the same scale — 10th of 12 months, versus 9.4/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.

If your dates are flexible, June is materially better in Luxembourg City — 4.8 points higher on the same scale.

December in Luxembourg City — off-season conditions

Hardest · 4.1/10

December averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.

Rainfall runs 78 mm, so plan one flexible day in three; you still get about 4 days with 6+ hours of sunshine and 8.2 hours of daylight.

It scores 4.1/10 here, 11th of 12 months, against 9.4/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

Flexible dates? June scores 5.3 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Luxembourg City, Luxembourg?
In Ideal Weather mode, the best months to visit Luxembourg City are June, July, August. June is the single peak month with an Ideal Weather score of 9.4/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Luxembourg City year-round?
Luxembourg City has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 2°C in January to 19°C in August, with Ideal Weather scores between 3.9 and 9.4 out of 10.
Which months should I avoid in Luxembourg City?
The lowest Ideal Weather-scoring months in Luxembourg City are January (3.9/10), December (4.1/10), November (4.6/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Luxembourg City?
November is the wettest month in Luxembourg City, averaging about 101 mm of rainfall. June is the driest, at roughly 52 mm.
Which is the sunniest month in Luxembourg City?
August sees the most sun in Luxembourg City, with about 29 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Luxembourg City a good destination for sightseeing and cultural travel?
Luxembourg City is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (June, July, August) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Luxembourg City calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Luxembourg City: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

12

Explore by month

Curated in Luxembourg City

Tickets & experiences