Luxembourg City, Luxembourg Weather
Luxembourg City hourly forecast: next 24 hours
Today's high of 67°F (20°C) is right in line with the typical September high of 67°F (19°C).
Current conditions in detail
Luxembourg City weather tomorrow (Thursday, September 17)
Tomorrow in Luxembourg City looks overcast, with a high of 62° and an overnight low of 50°. Rain is unlikely (14% chance). Winds top out near 14 mph, and the UV index reaches 4 (moderate).
Luxembourg City 14-day forecast
About the weather 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 weather: 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.
Season by season
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.
Average temperatures in Luxembourg City by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 40° | 31° | 14 | 3.5 in | 3.1 h/day | 88% |
| February | 44° | 32° | 12 | 2.7 in | 5.2 h/day | 83% |
| March | 49° | 35° | 13 | 2.8 in | 7.2 h/day | 78% |
| April | 56° | 38° | 11 | 2.1 in | 9.8 h/day | 72% |
| May | 63° | 46° | 12 | 3.0 in | 11.0 h/day | 72% |
| June | 72° | 54° | 12 | 2.8 in | 11.5 h/day | 70% |
| July | 74° | 56° | 10 | 2.5 in | 11.9 h/day | 67% |
| August | 74° | 57° | 11 | 2.5 in | 10.8 h/day | 71% |
| September | 67° | 50° | 11 | 2.8 in | 9.3 h/day | 76% |
| October | 58° | 45° | 12 | 3.2 in | 5.9 h/day | 85% |
| November | 47° | 38° | 14 | 3.3 in | 3.7 h/day | 89% |
| December | 42° | 35° | 14 | 3.2 in | 2.7 h/day | 91% |