Luxembourg weather in April

April in Luxembourg: cool, a little rain, with clean air — a great time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Luxembourg🇱🇺 Luxembourg · Western Europe · City76
  1. 41Jan
  2. 53Feb
  3. 65Mar
  4. 76Apr
  5. 81May
  6. 90Jun
  7. 92Jul
  8. 95Aug
  9. 83Sep
  10. 68Oct
  11. 56Nov
  12. 45Dec

#6 of 12 months in Luxembourg · #854 of 1413 destinations to visit in April · comfort 76/100 (tier B)

Days
14°C
Nights
4°C
Wet days
8
Sun
9.8 h
Humidity
73%
Daylight
14 h
Luxembourg, Luxembourg
Photo: Vijay Aditya M · Pexels

Traveller notes on Luxembourg in April

Other months in Luxembourg

Regulars planning even a short two-day visit lean on the long daylight this month gives them to cram in sightseeing and evening plans - genuinely the year's longest days, over 16 hours between sunrise and sunset. Our row backs the mild, pleasant read, 22.8C over 12.6C nights, with 69.7mm of rain across 10.1 days. Regulars call this a genuinely great month to visit, warm enough for outdoor exploring without summer's later heat, with the extra daylight hours making a packed itinerary more realistic than in shorter-day months. The record: humidity 72 percent, 11.7 hours of sun, a 15.7 kph wind and AQI 49.
LongestDaysMildAfternoonsGreatMonth · June · 1 month ago · Read more on Tripadvisor ↗
Regulars pitch this month by comparison rather than by number: pack for what you would wear at home in London, maybe a touch lighter for walking, since the climate does not differ much from the UK's, if a little less rainy. Our row supports the comparison at 24C over 13.6C, with 74.8mm across 8.7 days at 68.8 percent humidity - warm without being demanding. Their standing advice is layers: light summer clothes for the day, a set for cooler spells, closed shoes that can take a shower, and something for the evening when temperatures drop back. The city itself rewards a stroll through its parks and the underground Petrusse Casemates whatever the sky is doing. The record: 11.5 hours of sun, a 15.7 kph wind and AQI 42.
SimilarToLondonMaybeLessRain · July · 1 month ago · Read more on Tripadvisor ↗
Asked to choose between September and October, regulars answer with what you came for: September is warmer but too early for colour, and the golden weeks here come at the end of October into November, with lazy foggy mornings and the leaves lit at midday. They add the honest caveat that high wind can strip it overnight. Our row explains the mornings - 84 percent humidity and only 5.5 hours of sun a day - under 13.9C afternoons that read as 12C and 7C nights that read as 5C. Rain is 79.1mm across 10.9 days. This is a walking month for the valley and the Mullerthal rather than a terrace one. The record: a 17.8 kph wind and AQI 34.
FoggyMorningsGoldenNoons · October · 1 month ago · Read more on Tripadvisor ↗
August in Luxembourg City is the month the city empties. A great many people are away or working from home, so the streets are quiet and there is parking to be had - and a good number of restaurants shut for the whole month or most of it, because their expense-account custom has gone with them. The 15th is a public holiday on top, which closes more. The weather is mild rather than hot, and the country's own draw this month is outdoors: the Mullerthal around Echternach for walking and cycling, and the Ardennes around Wiltz in the north. The record: 23.9C days that feel like 23C, 13.9C nights, 7.8 precipitation days carrying 51.4mm and 10.8 hours of sun.
RestaurantsShutForTheMonth · August · 1 month ago · Read more on Tripadvisor ↗

Year-round notes are on Luxembourg's overview. Add your own note from Luxembourg's card on the map.

Luxembourg climate normals — April

Daytime high14°C / 57°F🙂 cool
Nighttime low4°C / 40°F
Feels like (high)11°C / 52°F
Rainfall48 mm / 1.9 in🌦 some rain
Rainy days8 days
Humidity73%💧 humid
Dew point3°C / 37°F
Sunshine9.8 h/day
Daylight13.8 h
Wind17 km/h / 11 mph
Snowfall0.8 cm / 0.3 in
Air quality (US AQI)40🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Luxembourg in April

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyOctave pilgrimage and Maertchen, school holidays in 6 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Luxembourg's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherLuxembourg's weather peaks June–August.

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Best weatherFair weatherToughest weather

What's on in Luxembourg in April

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Free public transport

    1 Jan – 31 Dec

    The whole country's buses, trams and second-class trains are free to everyone, residents and visitors alike. There is no ticket to buy and no barrier to tap. Source ↗

  • Festival

    Eimaischen pottery market

    6 AprEaster & Holy Week

    On Easter Monday the Feschmaart fills with potters selling Peckvillercher, the bird-shaped clay whistles everyone leaves with. It has run in the old town since the eighteenth century. Source ↗

  • Festival

    Octave pilgrimage and Maertchen

    20 Apr – 25 May · usuallyPilgrimage seasonCrowded

    A fortnight of pilgrimage to the cathedral in spring, with a food and trinket market taking over Place Guillaume for the duration and a closing procession through the streets. Source ↗

What's on around the world in April →

Nearby, and something's on

Within 300 km of Luxembourg — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Luxembourg?

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Luxembourg in April — FAQ

Is April a good time to visit Luxembourg?
April in Luxembourg: cool, a little rain, with clean air — a great time to visit. It ranks #6 of 12 months for Luxembourg on SeasonMap's comfort score (76/100).
What is the weather like in Luxembourg in April?
In April, Luxembourg averages a daily high of 14°C and a low of 4.2°C, with about 48.1 mm of rain over roughly 8.2 rainy days.
What is the air quality in Luxembourg in April?
Luxembourg has a mean US Air Quality Index of about 40 in April.

Within 300 km: Cologne's White asparagus season around 10 Apr – 24 Jun, and Strasbourg's Storks on the nests around 15 Feb – 31 Aug.