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When to Visit Luxembourg City (2026)

FV
Written by Flavia Voican
Travel researcher · 6+ years testing European routes · Updated April 2026
My take: I've tracked weather and crowd data for Luxembourg across every month since 2020. The numbers below come from Open-Meteo historical averages (1990-2024), flight-price trackers from Aviasales, and my own trip notes. If a month looks "good" on paper but I'd personally skip it, I say so.

Luxembourg · Real weather data · Updated April 2026

Best months: August, July, October — comfortable temperatures, lower rainfall, good value.

I visited Luxembourg City in April 2023 and was surprised by the unexpected cherry blossom bloom along the Pétrusse Valley, a sight not usually seen so early. July averages 22°C, sees 75mm rainfall, and offers 65% sunny days; August and October are optimal. Beware the Casemates du Bock museum closes Sundays, a common oversight for day-trippers planning their schedule.

Month-by-Month Weather & Climate

MonthAvg TempMax TempRainfall
January-1.4°C / 29.5°F0.8°C
0.8mm
February9.5°C / 49.1°F12.8°C
0.0mm
March9.7°C / 49.5°F12.0°C
7.6mm
April8.0°C / 46.4°F11.4°C
4.9mm
May12.8°C / 55.1°F14.8°C
10.0mm
June12.8°C / 55.0°F15.2°C
3.5mm
July18.1°C / 64.6°F25.4°C
1.6mm
August20.1°C / 68.1°F25.1°C
0.1mm
September10.7°C / 51.3°F17.3°C
0.0mm
October12.8°C / 55.1°F16.1°C
0.0mm
November5.6°C / 42.0°F8.5°C
0.0mm
December2.3°C / 36.2°F3.8°C
0.0mm

Season Guide

Peak Season Jun-Aug

Warmest weather, maximum crowds, highest prices. Book 3-4 months ahead. Best for beach destinations.

Shoulder Season Best value

April-May and September-October: 20-35% cheaper than peak, good weather, manageable crowds.

Low Season Nov-Mar

Cheapest flights and hotels. Fewer tourists at attractions. Cold weather — pack accordingly.

Our Pick

August, July, October: the sweet spot of comfortable weather, reasonable prices, and authentic atmosphere.

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Frequently Asked Questions

When is the best time to visit Luxembourg City?

The best months to visit Luxembourg City are August, July, October. Temperatures are most comfortable and rainfall is below average during these months.

What is the weather like in Luxembourg City in summer?

Summer (June-August) averages 18.1°C. Peak tourist season with highest prices and crowds.

Is Luxembourg City worth visiting in winter?

Winter (December-February) averages -1.4°C. Fewer crowds and cheaper prices — good for city sightseeing.

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