Luxembourg City, Luxembourg Climate & Monthly Averages
The climate of 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).
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 through the year
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.
Rain, sun and snow
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.
How Luxembourg City compares
- 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.
Ranked against every city in our dataset, each measured on the same ten-year window.
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
Average high and low for each month, with the bar showing where it sits in Luxembourg City's year (left is the coldest night, right is the 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
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in 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.
Climate questions, answered
How much sun does Luxembourg City get?
How hot does Luxembourg City get in summer?
How humid does Luxembourg City get?
How many rainy days does Luxembourg City get in a year?
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.
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 records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.