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April Weather at Karlsruhe/Baden-Baden Airport Baden-Württemberg, Germany

Daily high temperatures increase by 7°F, from 54°F to 61°F, rarely falling below 43°F or exceeding 74°F.

Daily low temperatures increase by 8°F, from 35°F to 43°F, rarely falling below 27°F or exceeding 51°F.

For reference, on August 3, the hottest day of the year, temperatures at Karlsruhe/Baden-Baden Airport typically range from 56°F to 78°F, while on February 9, the coldest day of the year, they range from 28°F to 42°F.

Average High and Low Temperature in April at Karlsruhe/Baden-Baden Airport

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.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, 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 April at Karlsruhe/Baden-Baden Airport

Average Hourly Temperature in April at Karlsruhe/Baden-Baden AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMayvery coldcoldcoolcool
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.

Campbell River, British Columbia, Canada (5,077 miles away) is the far-away foreign place with temperatures most similar to Karlsruhe/Baden-Baden Airport (view comparison).

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The month of April at Karlsruhe/Baden-Baden Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 54% throughout the month.

The clearest day of the month is April 10, with clear, mostly clear, or partly cloudy conditions 47% of the time.

For reference, on December 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 62%.

Cloud Cover Categories in April at Karlsruhe/Baden-Baden Airport

Cloud Cover Categories in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 145%Apr 145%Apr 3045%Apr 3045%Apr 1147%Apr 1147%Apr 2147%Apr 2147%clearmostly clearpartly cloudymostly cloudyovercast
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Karlsruhe/Baden-Baden Airport, the chance of a wet day over the course of April is gradually increasing, starting the month at 28% and ending it at 31%.

For reference, the year's highest daily chance of a wet day is 37% on May 24, and its lowest chance is 23% on February 29.

Over the course of April at Karlsruhe/Baden-Baden Airport, the chance of a day with only rain increases from 25% to 30%, the chance of a day with mixed snow and rain decreases from 3% to 0%, and the chance of a day with only snow remains an essentially constant 0% throughout.

Probability of Precipitation in April at Karlsruhe/Baden-Baden Airport

Probability of Precipitation in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%MarMayApr 128%Apr 128%Apr 3031%Apr 3031%Apr 1126%Apr 1126%Apr 2128%Apr 2128%mixedrainsnow
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).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April at Karlsruhe/Baden-Baden Airport is gradually increasing, starting the month at 1.6 inches, when it rarely exceeds 3.1 inches or falls below 0.5 inches, and ending the month at 2.0 inches, when it rarely exceeds 3.2 inches or falls below 0.8 inches.

Average Monthly Rainfall in April at Karlsruhe/Baden-Baden Airport

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.

Over the course of April at Karlsruhe/Baden-Baden Airport, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 39 minutes, implying an average daily increase of 3 minutes, 25 seconds, and weekly increase of 23 minutes, 55 seconds.

The shortest day of the month is April 1, with 12 hours, 54 minutes of daylight and the longest day is April 30, with 14 hours, 33 minutes of daylight.

Hours of Daylight and Twilight in April at Karlsruhe/Baden-Baden Airport

Hours of Daylight and Twilight in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrMarMaynightnightdaydayApr 112 hr, 54 minApr 112 hr, 54 minApr 3014 hr, 33 minApr 3014 hr, 33 minApr 1613 hr, 47 minApr 1613 hr, 47 min
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.

The latest sunrise of the month at Karlsruhe/Baden-Baden Airport is 7:04 AM on April 1 and the earliest sunrise is 56 minutes earlier at 6:08 AM on April 30.

The earliest sunset is 7:59 PM on April 1 and the latest sunset is 43 minutes later at 8:42 PM on April 30.

Daylight saving time is observed at Karlsruhe/Baden-Baden Airport during 2024, but it neither starts nor ends during April, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:24 AM and sets 16 hours, 10 minutes later, at 9:34 PM, while on December 21, the shortest day of the year, it rises at 8:18 AM and sets 8 hours, 15 minutes later, at 4:33 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in April at Karlsruhe/Baden-Baden Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMarMay6:08 AM6:08 AMApr 308:42 PMApr 308:42 PM7:04 AM7:04 AMApr 17:59 PMApr 17:59 PM6:44 AM6:44 AMApr 118:13 PMApr 118:13 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of April. 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 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 April at Karlsruhe/Baden-Baden Airport

Solar Elevation and Azimuth in April at Karlsruhe/Baden-Baden AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMay010102020203040405050000102020303030405060
northeastsouthwest
Solar elevation and azimuth over the course of April 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 April 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in April at Karlsruhe/Baden-Baden Airport

Moon Rise, Set & Phases in April at Karlsruhe/Baden-Baden AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMarMayMar 1010:01 AMMar 1010:01 AMMar 258:01 AMMar 258:01 AMApr 88:22 PMApr 88:22 PMApr 241:50 AMApr 241:50 AMMay 85:23 AMMay 85:23 AMMay 233:54 PMMay 233:54 PM7:06 AM7:06 AM6:44 PM6:44 PM6:03 PM6:03 PM6:29 AM6:29 AM6:42 AM6:42 AM8:04 PM8:04 PM8:16 PM8:16 PM6:17 AM6:17 AM5:43 AM5:43 AM9:55 PM9:55 PM9:43 PM9:43 PM5:34 AM5:34 AM
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.
Apr 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
60%3:14 AMSE10:23 AMSW-6:49 AMS238,596 mi
2
50%4:09 AMSE11:29 AMSW-7:49 AMS235,272 mi
3
38%4:53 AMSE12:48 PMSW-8:50 AMS231,880 mi
4
26%5:25 AMSE2:13 PMWSW-9:49 AMS228,669 mi
5
16%5:49 AMESE3:41 PMWSW-10:44 AMS225,932 mi
6
8%6:09 AMESE5:09 PMW-11:37 AMS223,969 mi
7
3%6:26 AME6:36 PMW-12:28 PMS223,033 mi
8
0%6:42 AME8:04 PMWNW-1:19 PMS223,282 mi
9
1%7:00 AMENE9:32 PMWNW-2:10 PMS224,737 mi
10
5%7:20 AMENE11:00 PMWNW-3:03 PMS227,271 mi
11
11%7:45 AMNE--3:58 PMS230,635 mi
12
19%-12:26 AMNW8:18 AMNE4:56 PMS234,495 mi
13
29%-1:44 AMNW9:01 AMNE5:53 PMS238,494 mi
14
39%-2:48 AMNW9:57 AMNE6:50 PMS242,300 mi
15
50%-3:36 AMNW11:03 AMNE7:43 PMS245,648 mi
16
60%-4:11 AMNW12:15 PMNE8:32 PMS248,357 mi
17
69%-4:37 AMNW1:26 PMENE9:17 PMS250,329 mi
18
78%-4:56 AMWNW2:37 PMENE9:59 PMS251,541 mi
19
85%-5:12 AMWNW3:45 PMENE10:39 PMS252,026 mi
20
91%-5:25 AMW4:52 PME11:17 PMS251,859 mi
21
96%-5:37 AMW5:59 PME11:56 PMS251,139 mi
22
98%-5:49 AMW7:07 PMESE--
23
99%-6:02 AMWSW8:16 PMESE12:36 AMS249,969 mi
24
100%-6:17 AMWSW9:28 PMESE1:17 AMS248,450 mi
25
99%-6:36 AMWSW10:43 PMSE2:02 AMS246,662 mi
26
96%-7:00 AMSW11:57 PMSE2:52 AMS244,665 mi
27
91%-7:33 AMSW-3:45 AMS242,497 mi
28
84%1:07 AMSE8:19 AMSW-4:43 AMS240,182 mi
29
75%2:06 AMSE9:20 AMSW-5:43 AMS237,747 mi
30
64%2:52 AMSE10:34 AMSW-6:43 AMS235,236 mi

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 chance that a given day will be muggy at Karlsruhe/Baden-Baden Airport is essentially constant during April, remaining around 0% throughout.

For reference, on July 25, the muggiest day of the year, there are muggy conditions 3% of the time, while on October 19, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in April at Karlsruhe/Baden-Baden Airport

Humidity Comfort Levels in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%MarMayApr 10%Apr 10%Apr 300%Apr 300%Apr 110%Apr 110%Apr 210%Apr 210%drydrycomfortablecomfortable
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.

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 at Karlsruhe/Baden-Baden Airport is gradually decreasing during April, decreasing from 8.1 miles per hour to 7.2 miles per hour over the course of the month.

For reference, on January 17, the windiest day of the year, the daily average wind speed is 8.8 miles per hour, while on August 9, the calmest day of the year, the daily average wind speed is 6.1 miles per hour.

Average Wind Speed in April at Karlsruhe/Baden-Baden Airport

Average Wind Speed in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphMarMayApr 18.1 mphApr 18.1 mphApr 307.2 mphApr 307.2 mphApr 117.6 mphApr 117.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction at Karlsruhe/Baden-Baden Airport throughout April is predominantly from the west, with a peak proportion of 36% on April 3.

Wind Direction in April at Karlsruhe/Baden-Baden Airport

Wind Direction in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%MarMaywestsoutheastnorth
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).

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 at Karlsruhe/Baden-Baden Airport typically lasts for 6.4 months (194 days), from around April 16 to around October 28, rarely starting before March 26 or after May 7, and rarely ending before October 8 or after November 17.

During April at Karlsruhe/Baden-Baden Airport, the chance that a given day is within the growing season is very rapidly increasing rising from 18% to 80% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in April at Karlsruhe/Baden-Baden Airport

Time Spent in Various Temperature Bands and the Growing Season in April at Karlsruhe/Baden-Baden Airportgrowing seasonApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 118%Apr 118%80%Apr 3080%Apr 30Apr 1138%Apr 1138%61%Apr 2161%Apr 21Mar 2610%Mar 2610%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.

The average accumulated growing degree days at Karlsruhe/Baden-Baden Airport are gradually increasing during April, increasing by 96°F, from 46°F to 142°F, over the course of the month.

Growing Degree Days in April at Karlsruhe/Baden-Baden Airport

The average growing degree days accumulated over the course of April, 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 at Karlsruhe/Baden-Baden Airport is increasing during April, rising by 1.3 kWh, from 4.1 kWh to 5.4 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in April at Karlsruhe/Baden-Baden Airport

Average Daily Incident Shortwave Solar Energy in April at Karlsruhe/Baden-Baden AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhMarMayApr 14.1 kWhApr 14.1 kWhApr 305.4 kWhApr 305.4 kWhApr 114.7 kWhApr 114.7 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Karlsruhe/Baden-Baden Airport are 48.779 deg latitude, 8.080 deg longitude, and 397 ft elevation.

The topography within 2 miles of Karlsruhe/Baden-Baden Airport contains only modest variations in elevation, with a maximum elevation change of 98 feet and an average elevation above sea level of 396 feet. Within 10 miles contains only modest variations in elevation (2,244 feet). Within 50 miles contains large variations in elevation (3,957 feet).

The area within 2 miles of Karlsruhe/Baden-Baden Airport is covered by artificial surfaces (35%), cropland (30%), and trees (21%), within 10 miles by cropland (41%) and trees (37%), and within 50 miles by trees (45%) and cropland (36%).

This report illustrates the typical weather at Karlsruhe/Baden-Baden Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Karlsruhe/Baden-Baden Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Black Forest Airport; Strasbourg International Airport; Zweibrücken; Ramstein; Baden Wurttemberg, Neuostheim; Heidelberg; Saarbrücken Airport; and Messstetten.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

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.

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