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Climate and Average Weather Year Round in Luxembourg Luxembourg

In Luxembourg, the summers are comfortable and partly cloudy and the winters are very cold, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 30°F to 74°F and is rarely below 19°F or above 85°F.

Based on the tourism score, the best time of year to visit Luxembourg for warm-weather activities is from late June to late August.

Climate in Luxembourg

very coldcoldcoolcomfortablecoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow60%60%24%24%overcastclearprecipitation: 2.3 inprecipitation: 2.3 in1.6 in1.6 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.8tourism score: 6.80.00.0
Luxembourg weather by month. Click on each chart for more information.

The warm season lasts for 3.1 months, from June 2 to September 7, with an average daily high temperature above 67°F. The hottest month of the year in Luxembourg is July, with an average high of 73°F and low of 57°F.

The cold season lasts for 3.6 months, from November 15 to March 4, with an average daily high temperature below 45°F. The coldest month of the year in Luxembourg is January, with an average low of 31°F and high of 38°F.

Average High and Low Temperature in Luxembourg

Average High and Low Temperature in LuxembourgwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1938°FJan 1938°FAug 474°FAug 474°F30°F30°F58°F58°FJun 267°FJun 267°FSep 767°FSep 767°FNov 1545°FNov 1545°FMar 445°FMar 445°F51°F51°F53°F53°F37°F37°F33°F33°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 38°F41°F48°F56°F64°F69°F73°F72°F65°F55°F45°F40°F
Temp. 34°F35°F42°F48°F56°F61°F65°F64°F58°F50°F41°F36°F
Low 31°F31°F36°F41°F48°F53°F57°F56°F51°F44°F37°F32°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Luxembourg

Average Hourly Temperature in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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In Luxembourg, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Luxembourg begins around March 29 and lasts for 6.3 months, ending around October 7.

The clearest month of the year in Luxembourg is July, during which on average the sky is clear, mostly clear, or partly cloudy 59% of the time.

The cloudier part of the year begins around October 7 and lasts for 5.7 months, ending around March 29.

The cloudiest month of the year in Luxembourg is December, during which on average the sky is overcast or mostly cloudy 75% of the time.

Cloud Cover Categories in Luxembourg

Cloud Cover Categories in LuxembourgclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2260%Jul 2260%Nov 2124%Nov 2124%Mar 2942%Mar 2942%Oct 742%Oct 742%NowNowclearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 71%64%60%56%55%48%41%44%49%62%74%75%
Clearer 29%36%40%44%45%52%59%56%51%38%26%25%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Luxembourg varies throughout the year.

The wetter season lasts 8.4 months, from May 7 to January 20, with a greater than 29% chance of a given day being a wet day. The month with the most wet days in Luxembourg is June, with an average of 9.6 days with at least 0.04 inches of precipitation.

The drier season lasts 3.6 months, from January 20 to May 7. The month with the fewest wet days in Luxembourg is February, with an average of 7.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Luxembourg is June, with an average of 9.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 35% on May 23.

Daily Chance of Precipitation in Luxembourg

Daily Chance of Precipitation in LuxembourgwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 2335%May 2335%Mar 224%Mar 224%Jan 2029%Jan 2029%NowNowrainsnowmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 7.3d5.9d7.4d7.5d9.6d9.6d8.8d8.4d8.0d8.6d7.8d7.7d
Mixed 1.0d1.0d0.6d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.1d
Snow 0.9d0.5d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.9d
Any 9.1d7.4d8.1d7.7d9.6d9.6d8.8d8.4d8.0d8.6d8.4d9.7d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Luxembourg experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Luxembourg. The month with the most rain in Luxembourg is June, with an average rainfall of 2.2 inches.

The month with the least rain in Luxembourg is February, with an average rainfall of 1.5 inches.

Average Monthly Rainfall in Luxembourg

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.8″1.5″1.6″1.6″2.1″2.2″2.1″2.0″2.1″2.1″1.9″2.0″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Luxembourg experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.0 months, from November 23 to February 23, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Luxembourg is December, with an average snowfall of 2.4 inches.

The snowless period of the year lasts for 9.0 months, from February 23 to November 23. The least snow falls around August 3, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Luxembourg

Average Monthly Snowfall in LuxembourgsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inDec 242.5 inDec 242.5 inAug 30.0 inAug 30.0 inNov 231.0 inNov 231.0 inFeb 231.0 inFeb 231.0 inNowNow
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 2.0″1.2″0.5″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.5″2.4″

The length of the day in Luxembourg varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 7 minutes of daylight; the longest day is June 20, with 16 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in Luxembourg

Hours of Daylight and Twilight in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2016 hr, 20 minJun 2016 hr, 20 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 7 minDec 218 hr, 7 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 8.7h10.1h11.9h13.8h15.4h16.3h15.8h14.4h12.6h10.7h9.1h8.2h

The earliest sunrise is at 5:26 AM on June 16, and the latest sunrise is 3 hours, 6 minutes later at 8:32 AM on December 31. The earliest sunset is at 4:34 PM on December 11, and the latest sunset is 5 hours, 13 minutes later at 9:47 PM on June 25.

Daylight saving time (DST) is observed in Luxembourg during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Luxembourg

Sunrise & Sunset with Twilight and Daylight Saving Time in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 165:26 AMJun 165:26 AM9:47 PMJun 259:47 PMJun 25Dec 114:34 PMDec 114:34 PM8:32 AMDec 318:32 AMDec 31Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunset
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Luxembourg

Solar Elevation and Azimuth in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000010101020203030404050000101010102020303040405050601764NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Luxembourg

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Luxembourg, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels in Luxembourg

Humidity Comfort Levels in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 110%Mar 110%Jul 111%Jul 111%NowNowcomfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.1d0.2d0.2d0.0d0.0d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Luxembourg experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.8 months, from October 16 to April 9, with average wind speeds of more than 9.6 miles per hour. The windiest month of the year in Luxembourg is January, with an average hourly wind speed of 11.2 miles per hour.

The calmer time of year lasts for 6.2 months, from April 9 to October 16. The calmest month of the year in Luxembourg is August, with an average hourly wind speed of 8.1 miles per hour.

Average Wind Speed in Luxembourg

Average Wind Speed in LuxembourgwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphJan 1711.3 mphJan 1711.3 mphAug 47.8 mphAug 47.8 mphOct 169.6 mphOct 169.6 mphApr 99.6 mphApr 99.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 11.210.810.39.48.78.48.38.18.79.59.910.8

The predominant average hourly wind direction in Luxembourg varies throughout the year.

The wind is most often from the east for 6.0 days, from April 27 to May 3, with a peak percentage of 28% on April 29. The wind is most often from the west for 5.1 months, from May 3 to October 6 and for 4.6 months, from December 9 to April 27, with a peak percentage of 43% on July 2. The wind is most often from the south for 2.1 months, from October 6 to December 9, with a peak percentage of 37% on October 27.

Wind Direction in Luxembourg

Wind Direction in LuxembourgWWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is in Luxembourg throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Luxembourg for general outdoor tourist activities is from late June to late August, with a peak score in the first week of August.

Tourism Score in Luxembourg

Tourism Score in Luxembourgbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.80.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Luxembourg for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score in Luxembourg

Beach/Pool Score in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.83.80.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Luxembourg typically lasts for 7.0 months (212 days), from around April 6 to around November 4, rarely starting before March 13 or after April 28, and rarely ending before October 14 or after November 27.

Time Spent in Various Temperature Bands and the Growing Season in Luxembourg

Time Spent in Various Temperature Bands and the Growing Season in Luxembourggrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 650%Apr 650%Nov 450%Nov 490%Apr 2890%Apr 2890%Oct 1490%Oct 1410%Mar 1310%Mar 1310%Nov 2710%Nov 270%Jan 270%Jan 27Jul 23100%Jul 23100%freezingvery coldcoldcoolcomfortablewarm
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Luxembourg should appear around April 24, only rarely appearing before April 9 or after May 10.

Growing Degree Days in Luxembourg

Growing Degree Days in LuxembourgJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FApr 2490°FApr 2490°FJul 16900°FJul 16900°FSep 261,800°FSep 261,800°FDec 311,931°FDec 311,931°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from May 2 to August 18, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest month of the year in Luxembourg is June, with an average of 6.5 kWh.

The darker period of the year lasts for 3.7 months, from October 26 to February 18, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest month of the year in Luxembourg is December, with an average of 0.7 kWh.

Average Daily Incident Shortwave Solar Energy in Luxembourg

Average Daily Incident Shortwave Solar Energy in LuxembourgbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 256.6 kWhJun 256.6 kWhDec 250.7 kWhDec 250.7 kWhMay 25.4 kWhMay 25.4 kWhAug 185.4 kWhAug 185.4 kWhOct 261.9 kWhOct 261.9 kWhFeb 181.9 kWhFeb 181.9 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.01.83.24.75.96.56.45.54.02.41.20.7

For the purposes of this report, the geographical coordinates of Luxembourg are 49.750 deg latitude, 6.167 deg longitude, and 1,220 ft elevation.

The topography within 2 miles of Luxembourg contains significant variations in elevation, with a maximum elevation change of 610 feet and an average elevation above sea level of 1,235 feet. Within 10 miles contains significant variations in elevation (925 feet). Within 50 miles contains very significant variations in elevation (2,480 feet).

The area within 2 miles of Luxembourg is covered by trees (68%) and cropland (25%), within 10 miles by trees (41%) and cropland (29%), and within 50 miles by trees (40%) and cropland (31%).

This report illustrates the typical weather in Luxembourg, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Luxembourg Findel Airport page.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.

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