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Spring Weather in Djelfa Algeria

Daily high temperatures increase by 24°F, from 58°F to 82°F, rarely falling below 47°F or exceeding 91°F.

Daily low temperatures increase by 21°F, from 37°F to 58°F, rarely falling below 31°F or exceeding 66°F.

For reference, on July 18, the hottest day of the year, temperatures in Djelfa typically range from 69°F to 94°F, while on January 11, the coldest day of the year, they range from 32°F to 51°F.

Average High and Low Temperature in the Spring in Djelfa

Average High and Low Temperature in the Spring in DjelfaMarAprMay30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FWinterSummerMar 158°FMar 158°F37°F37°FMay 3182°FMay 3182°F58°F58°FApr 165°FApr 165°F43°F43°FMay 172°FMay 172°F50°F50°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.

The figure below shows you a compact characterization of the hourly average spring temperatures. 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 the Spring in Djelfa

Average Hourly Temperature in the Spring in DjelfaMarAprMay12 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 AMWinterSummerNowNowvery coldvery coldcoldcoolcomfortablewarmhot
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.

Clinton, Arkansas, United States (5,165 miles away); Murfreesboro, Tennessee, United States (4,862 miles); and South Hill, Virginia, United States (4,425 miles) are the far-away foreign places with temperatures most similar to Djelfa (view comparison).

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The spring in Djelfa experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 38% to 33%.

The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 67% of the time.

For reference, on December 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 93%.

Cloud Cover Categories in the Spring in Djelfa

Cloud Cover Categories in the Spring in DjelfaMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerMar 162%Mar 162%May 3167%May 3167%Apr 167%Apr 167%May 165%May 165%NowNowclearmostly clearpartly 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. In Djelfa, the chance of a wet day over the course of the spring is gradually decreasing, starting the season at 13% and ending it at 10%.

For reference, the year's highest daily chance of a wet day is 16% on May 5, and its lowest chance is 4% on July 20.

Probability of Precipitation in the Spring in Djelfa

Probability of Precipitation in the Spring in DjelfaMarAprMay0%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%16%16%WinterSummerMay 516%May 516%Mar 113%Mar 113%May 3110%May 3110%Apr 113%Apr 113%NowNowrainmixed
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the spring in Djelfa is essentially constant, remaining about 0.9 inches throughout, and rarely exceeding 2.7 inches.

The highest average 31-day accumulation is 1.1 inches on April 26.

Average Monthly Rainfall in the Spring in Djelfa

Average Monthly Rainfall in the Spring in DjelfaMarAprMay0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inWinterSummerApr 251.1 inApr 251.1 inMar 10.8 inMar 10.8 inMay 310.6 inMay 310.6 inApr 10.8 inApr 10.8 inNowNow
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 the spring in Djelfa, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 2 hours, 52 minutes, implying an average daily increase of 1 minute, 53 seconds, and weekly increase of 13 minutes, 13 seconds.

The shortest day of the spring is March 1, with 11 hours, 27 minutes of daylight and the longest day is May 31, with 14 hours, 19 minutes of daylight.

Hours of Daylight and Twilight in the Spring in Djelfa

Hours of Daylight and Twilight in the Spring in DjelfaMarAprMay0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrWinterSummerMar 2012 hr, 7 minMar 2012 hr, 7 minnightnightdaydayMay 3114 hr, 19 minMay 3114 hr, 19 minMay 113 hr, 36 minMay 113 hr, 36 minNowNow
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 spring in Djelfa is 7:15 AM on March 1 and the earliest sunrise is 1 hour, 40 minutes earlier at 5:35 AM on May 31.

The earliest sunset is 6:43 PM on March 1 and the latest sunset is 1 hour, 11 minutes later at 7:54 PM on May 31.

Daylight saving time is not observed in Djelfa during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:34 AM and sets 14 hours, 29 minutes later, at 8:03 PM, while on December 21, the shortest day of the year, it rises at 7:50 AM and sets 9 hours, 50 minutes later, at 5:40 PM.

Sunrise & Sunset with Twilight in the Spring in Djelfa

Sunrise & Sunset with Twilight in the Spring in DjelfaMarAprMay2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMWinterSummer5:35 AM5:35 AMMay 317:54 PMMay 317:54 PM7:15 AM7:15 AMMar 16:43 PMMar 16:43 PM6:33 AM6:33 AMApr 17:08 PMApr 17:08 PM5:56 AM5:56 AMMay 17:32 PMMay 17:32 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the spring. 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 the Spring in Djelfa

Solar Elevation and Azimuth in the Spring in DjelfaMarAprMay12 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 AMWinterSummer001020203030405050600010102030304040506070NowNow
northeastsouthwest
Solar elevation and azimuth in the the spring of 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 the spring of 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 the Spring in Djelfa

Moon Rise, Set & Phases in the Spring in DjelfaMarAprMay12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMWinterSummerFeb 1012:00 AMFeb 1012:00 AMFeb 241:31 PMFeb 241:31 PMMar 1010:01 AMMar 1010:01 AMMar 258:01 AMMar 258:01 AMApr 87:22 PMApr 87:22 PMApr 2412:50 AMApr 2412:50 AMMay 84:23 AMMay 84:23 AMMay 232:54 PMMay 232:54 PMJun 61:38 PMJun 61:38 PMJun 222:09 AMJun 222:09 AM7:33 AM7:33 AM5:54 PM5:54 PM6:41 PM6:41 PM7:59 AM7:59 AM7:13 AM7:13 AM7:11 PM7:11 PM6:27 PM6:27 PM6:50 AM6:50 AM6:09 AM6:09 AM7:09 PM7:09 PM7:10 PM7:10 PM6:07 AM6:07 AM8:25 PM8:25 PM8:07 PM8:07 PM5:52 AM5:52 AM8:25 PM8:25 PM8:01 PM8:01 PM5:29 AM5:29 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.

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 in Djelfa is essentially constant during the spring, remaining around 0% throughout.

For reference, on August 24, the muggiest day of the year, there are muggy conditions 3% of the time, while on November 23, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Spring in Djelfa

Humidity Comfort Levels in the Spring in DjelfaMarAprMay0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%WinterSummerMar 10%Mar 10%May 311%May 311%Apr 10%Apr 10%May 10%May 10%comfortablecomfortabledrydryhumidhumid
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 in Djelfa is decreasing during the spring, decreasing from 11.0 miles per hour to 9.7 miles per hour over the course of the season.

For reference, on April 6, the windiest day of the year, the daily average wind speed is 11.3 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 8.3 miles per hour.

The highest daily average wind speed during the spring is 11.3 miles per hour on April 6.

Average Wind Speed in the Spring in Djelfa

Average Wind Speed in the Spring in DjelfaMarAprMay0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphWinterSummerApr 611.3 mphApr 611.3 mphMar 111.0 mphMar 111.0 mphMay 319.7 mphMay 319.7 mphMay 110.8 mphMay 110.8 mphNowNow
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 in Djelfa throughout the spring is predominantly from the north, with a peak proportion of 38% on April 12.

Wind Direction in the Spring in Djelfa

Wind Direction in the Spring in DjelfaWNMarAprMay0%100%20%80%40%60%60%40%80%20%100%0%WinterSummerNowNowwestsouthnortheast
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 in Djelfa typically lasts for 8.3 months (255 days), from around March 14 to around November 24, rarely starting before February 17 or after April 5, and rarely ending before November 2 or after December 16.

During the spring in Djelfa, the chance that a given day is within the growing season is very rapidly increasing rising from 27% to 100% over the course of the season.

Time Spent in Various Temperature Bands and the Growing Season in the Spring in Djelfa

Time Spent in Various Temperature Bands and the Growing Season in the Spring in Djelfagrowing seasonMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerMar 127%Mar 127%100%May 31100%May 3185%Apr 185%Apr 1100%May 1100%May 1Feb 1710%Feb 1710%NowNowvery coldcoldcoolcomfortablewarmhotfreezing
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 in Djelfa are rapidly increasing during the spring, increasing by 838°F, from 69°F to 907°F, over the course of the season.

Growing Degree Days in the Spring in Djelfa

Growing Degree Days in the Spring in DjelfaMarAprMay200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°FWinterSummerMar 169°FMar 169°FMay 31907°FMay 31907°FApr 1197°FApr 1197°FMay 1445°FMay 1445°FNowNow
The average growing degree days accumulated over the course of the spring, 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 in Djelfa is very rapidly increasing during the spring, rising by 2.8 kWh, from 4.8 kWh to 7.6 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Spring in Djelfa

Average Daily Incident Shortwave Solar Energy in the Spring in DjelfaMarAprMay0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhWinterSummerMar 14.8 kWhMar 14.8 kWhMay 317.6 kWhMay 317.6 kWhApr 16.3 kWhApr 16.3 kWhMay 17.1 kWhMay 17.1 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.

For the purposes of this report, the geographical coordinates of Djelfa are 34.673 deg latitude, 3.263 deg longitude, and 3,734 ft elevation.

The topography within 2 miles of Djelfa contains only modest variations in elevation, with a maximum elevation change of 266 feet and an average elevation above sea level of 3,798 feet. Within 10 miles contains only modest variations in elevation (1,670 feet). Within 50 miles contains very significant variations in elevation (3,251 feet).

The area within 2 miles of Djelfa is covered by artificial surfaces (85%), within 10 miles by sparse vegetation (72%) and cropland (14%), and within 50 miles by sparse vegetation (58%) and bare soil (35%).

This report illustrates the typical weather in Djelfa, 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

There is only a single weather station, L'Mekrareg Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Djelfa.

At a distance of 106 kilometers from Djelfa, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Djelfa according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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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