Luxembourg City, Luxembourg Climate & Monthly Averages
Luxembourg City has an oceanic climate. July is the hottest month, averaging 74° by day; January is the coldest at 40°.
How weather changes through the year in Luxembourg City
Luxembourg City runs on a dry-summer rhythm: the warmest months are also the driest. April averages 2.1 inches (54 mm) while the wet season peaks in January at 3.5 inches (88 mm). Highs range from 40°F (4°C) to 74°F (23°C).
Luxembourg City climate quick facts
- Hottest month: July - highs near 74°F (23°C)
- Coldest month: January - highs near 40°F (4°C)
- Decade extremes (2015-2024): 100°F (38°C) high · 10°F (-12°C) low
- Wettest month: January (14 rainy days) · Sunniest: July (11.9 h sun/day)
- Climate type: oceanic
- Annual swing: 17°C between the average warmest and coolest month · day to night: 8°C
- Snow: about 10 days a year
- Months with freezing average lows: 1
- Average humidity: 78%
Temperatures, rain and sunshine
Average lows drop to freezing in one month of the year, January. January sits at the other end of the year: 40°F (4°C) by day, 31°F (0°C) at night. Warmth peaks in July: highs of 74°F (23°C), lows of 56°F (14°C). Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 100°F (38°C) and the lowest daily minimum 10°F (-12°C).
Precipitation concentrates in January - 3.5 inches (88 mm) on 14 days - and thins out by April.
Snow falls on roughly 10 days a year, mostly November through March. Sunshine averages 7.7 hours a day over the year - duller than about 89% of the cities we track, peaking in July at 11.9 hours.
Where Luxembourg City sits among other climates
- 29% of the year's precipitation falls in its wettest three months - more evenly spread than all but 9% of the 3496 cities we track.
- Luxembourg City averages 50°F (10°C) across the year - cooler than all but 12% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 40° | 31° | 14 | 3.5 in | 3.1 h/day | 8.6 h | 45% | 88% |
| February | 44° | 32° | 12 | 2.7 in | 5.2 h/day | 10.0 h | 42% | 83% |
| March | 49° | 35° | 13 | 2.8 in | 7.2 h/day | 11.7 h | 43% | 78% |
| April | 56° | 38° | 11 | 2.1 in | 9.8 h/day | 13.7 h | 35% | 72% |
| May | 63° | 46° | 12 | 3.0 in | 11.0 h/day | 15.4 h | 40% | 72% |
| June | 72° | 54° | 12 | 2.8 in | 11.5 h/day | 16.3 h | 40% | 70% |
| July | 74° | 56° | 10 | 2.5 in | 11.9 h/day | 15.9 h | 33% | 67% |
| August | 74° | 57° | 11 | 2.5 in | 10.8 h/day | 14.4 h | 36% | 71% |
| September | 67° | 50° | 11 | 2.8 in | 9.3 h/day | 12.5 h | 36% | 76% |
| October | 58° | 45° | 12 | 3.2 in | 5.9 h/day | 10.6 h | 38% | 85% |
| November | 47° | 38° | 14 | 3.3 in | 3.7 h/day | 9.0 h | 45% | 89% |
| December | 42° | 35° | 14 | 3.2 in | 2.7 h/day | 8.1 h | 45% | 91% |
Luxembourg City month by month
Each card shows the average high and low. The bar places that month between Luxembourg City's coldest night and warmest afternoon.
January
- Rain
- 14 days
- Sunshine
- 3.1 h
- Daylight
- 8.6 h
- Snow
- 4 days
February
- Rain
- 12 days
- Sunshine
- 5.2 h
- Daylight
- 10.0 h
- Snow
- 2 days
March
- Rain
- 13 days
- Sunshine
- 7.2 h
- Daylight
- 11.7 h
April
- Rain
- 11 days
- Sunshine
- 9.8 h
- Daylight
- 13.7 h
May
- Rain
- 12 days
- Sunshine
- 11.0 h
- Daylight
- 15.4 h
June
- Rain
- 12 days
- Sunshine
- 11.5 h
- Daylight
- 16.3 h
July
- Rain
- 10 days
- Sunshine
- 11.9 h
- Daylight
- 15.9 h
August
- Rain
- 11 days
- Sunshine
- 10.8 h
- Daylight
- 14.4 h
September
- Rain
- 11 days
- Sunshine
- 9.3 h
- Daylight
- 12.5 h
October
- Rain
- 12 days
- Sunshine
- 5.9 h
- Daylight
- 10.6 h
November
- Rain
- 14 days
- Sunshine
- 3.7 h
- Daylight
- 9.0 h
- Snow
- 1 day
December
- Rain
- 14 days
- Sunshine
- 2.7 h
- Daylight
- 8.1 h
- Snow
- 2 days
Looking for warmer alternatives? Browse warm places by month, or compare Luxembourg City's coolest part of the year: January, December, February.
A season-by-season guide to Luxembourg City
Spring (March through May)
Spring in Luxembourg City is crisp but comfortable, with daytime highs averaging 56°F (13°C) and nights around 40°F (4°C); rain falls on around 36 of the 90 days.
Summer (June through August)
Summer is pleasantly warm here - highs near 73°F (23°C), nights near 56°F (13°C), and rain falls on around 34 of the 90 days. Daylight is generous - around 11.4 hours of sun a day.
Fall (September through November)
Through fall, Luxembourg City runs cool rather than cold: 57°F (14°C) by day, 44°F (7°C) after dark, and rain falls on around 36 of the 90 days.
Winter (December through February)
Winter in Luxembourg City is brisk and cold, with daytime highs averaging 42°F (6°C) and nights around 33°F (0°C); rain falls on around 40 of the 90 days, plus about 8 snowy days.
Questions people ask about Luxembourg City's climate
How much sun does Luxembourg City get?
How hot does Luxembourg City get in summer?
How humid does Luxembourg City get?
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The most useful weather window for Luxembourg City
Best time to visit Luxembourg City
July to October and April is the sweet spot for Luxembourg City - the dry season is running but the afternoons are still bearable. Expect 66°F (19°C) in the afternoon and around 11 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in July.
What to pack
Pack for Luxembourg City with a heavy insulated coat, hat and gloves for winter and proper waterproofs rather than an umbrella - wet days are the norm here. Even in July, lows of 56°F (14°C) make an extra layer worth the space.
Luxembourg City temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.