Luxembourg Temperature by Month
Luxembourg, Luxembourg has an average annual maximum temperature of 15°C (59°F), ranging from 5°C (41°F) in January to 25°C (77°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Luxembourg Monthly Temperatures
In Luxembourg, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 14°C (57°F) in July to 0°C (32°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Luxembourg by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 259 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Luxembourg Temperatures: 1976-2026
Browse day-by-day temperature records for Luxembourg spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Luxembourg vs Luxembourg
The map below shows the annual temperature across Luxembourg. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Luxembourg vs World: Temperature Compared
Luxembourg's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Luxembourg?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Luxembourg, January is the coolest month, with average highs of 5°C (41°F) and humidity around 88% — considered very high. In July, the warmest month, temperatures average 25°C (77°F) with 67% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Luxembourg this rarely lasts long on the ground.
For more on Luxembourg's weather — including monthly rainfall, sunshine hours, and humidity — visit our Luxembourg climate page.
