Monthly climate guide
Luxembourg weather in May
May in Luxembourg is typically mild, with average daytime highs around 18°C (64°F) and night-time lows near 7°C (45°F). The month usually brings about 71 mm of rain (some rain) and is often cloudy. Daytime highs are 3°C warmer than April and 4°C cooler than June.
What stands out in May
- It warms up quickly from here: by June highs are about 4°C higher.
- In Luxembourg, May is late spring.
Avg high
18°C
64°F
Avg low
7°C
45°F
Rainfall
71 mm
some rain
Humidity
77%
relative
Sky
69%
cloud · often cloudy
Luxembourg weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 4°C / 39°F | -1°C / 30°F | 69 mm | 95% | 82% |
| February | 5°C / 41°F | -2°C / 29°F | 51 mm | 91% | 76% |
| March | 10°C / 49°F | 1°C / 33°F | 46 mm | 86% | 64% |
| April | 15°C / 58°F | 4°C / 39°F | 46 mm | 79% | 64% |
| May | 18°C / 64°F | 7°C / 45°F | 71 mm | 77% | 69% |
| June | 22°C / 72°F | 11°C / 52°F | 78 mm | 74% | 68% |
| July | 25°C / 77°F | 13°C / 56°F | 59 mm | 67% | 66% |
| August | 25°C / 77°F | 13°C / 56°F | 60 mm | 68% | 64% |
| September | 21°C / 70°F | 10°C / 49°F | 58 mm | 72% | 61% |
| October | 15°C / 59°F | 6°C / 43°F | 66 mm | 86% | 72% |
| November | 9°C / 47°F | 3°C / 37°F | 65 mm | 93% | 80% |
| December | 5°C / 41°F | 1°C / 33°F | 87 mm | 95% | 83% |
What to pack for May
- A warm sweater or fleece for layering
- A mid-weight jacket
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Luxembourg?
Compare the months in the chart above to find your ideal window.
Best time to visit Luxembourg →Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Luxembourg weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/luxembourg/luxembourg/may
<a href="https://weathercompare.eu/weather/luxembourg/luxembourg/may">Luxembourg weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/luxembourg/luxembourg" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Luxembourg weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/luxembourg/luxembourg/may">Luxembourg weather in May</a> – WeatherCompare</p>
Luxembourg in May: quick answers
Is May a good time to visit Luxembourg?
Yes. May is one of the best months for Luxembourg, with highs around 18°C and about 71 mm of rain.
How warm is Luxembourg in May?
Average highs are about 18°C (64°F) and average lows about 7°C (45°F), based on 10 years of daily data.
Does it rain a lot in Luxembourg in May?
Luxembourg typically gets around 71 mm of rain in May — some rain.
Figures are long-term averages for the area around Luxembourg (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.