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Spring Weather in Bir el Ater Algeria

Daily high temperatures increase by 25°F, from 58°F to 82°F, rarely falling below 48°F or exceeding 91°F.

Daily low temperatures increase by 20°F, from 40°F to 60°F, rarely falling below 34°F or exceeding 67°F.

For reference, on July 17, the hottest day of the year, temperatures in Bir el Ater typically range from 69°F to 94°F, while on January 12, the coldest day of the year, they range from 36°F to 52°F.

Average High and Low Temperature in the Spring in Bir el Ater

Average High and Low Temperature in the Spring in Bir el AterMarAprMay30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FWinterSummerMar 158°FMar 158°F40°F40°FMay 3182°FMay 3182°F60°F60°FApr 166°FApr 166°F46°F46°FMay 173°FMay 173°F52°F52°F
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 Bir el Ater

Average Hourly Temperature in the Spring in Bir el AterMarAprMay12 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 AMWinterSummervery coldcoldcoolcomfortablewarmhotvery coldwarm
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.

Good Hope, Alabama, United States (5,178 miles away); Charlotte, North Carolina, United States (4,844 miles); and Yangzhong, China (6,268 miles) are the far-away foreign places with temperatures most similar to Bir el Ater (view comparison).

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The spring in Bir el Ater experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 32% throughout the season. The highest chance of overcast or mostly cloudy conditions is 33% on May 21.

The clearest day of the spring is April 1, with clear, mostly clear, or partly cloudy conditions 70% of the time.

For reference, on October 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 40%, while on July 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 96%.

Cloud Cover Categories in the Spring in Bir el Ater

Cloud Cover Categories in the Spring in Bir el AterMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerJul 2496%Jul 2496%Mar 168%Mar 168%May 3168%May 3168%Apr 170%Apr 170%May 169%May 169%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Bir el Ater, the chance of a wet day over the course of the spring is essentially constant, remaining around 12% throughout.

For reference, the year's highest daily chance of a wet day is 15% on September 15, and its lowest chance is 3% on July 15.

Probability of Precipitation in the Spring in Bir el Ater

Probability of Precipitation in the Spring in Bir el AterMarAprMay0%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%WinterSummerMay 514%May 514%Mar 111%Mar 111%May 3112%May 3112%Apr 110%Apr 110%rainmixed
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 Bir el Ater is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 2.2 inches or falling below 0.1 inches.

The highest average 31-day accumulation is 0.9 inches on May 4.

Average Monthly Rainfall in the Spring in Bir el Ater

Average Monthly Rainfall in the Spring in Bir el AterMarAprMay0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inWinterSummerMay 40.9 inMay 40.9 inMar 10.7 inMar 10.7 inMay 310.7 inMay 310.7 inApr 10.8 inApr 10.8 in
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 Bir el Ater, 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, 54 seconds, and weekly increase of 13 minutes, 15 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, 20 minutes of daylight.

Hours of Daylight and Twilight in the Spring in Bir el Ater

Hours of Daylight and Twilight in the Spring in Bir el AterMarAprMay0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrWinterSummerMar 2012 hr, 7 minMar 2012 hr, 7 minnightnightdaydayMay 3114 hr, 20 minMay 3114 hr, 20 minMay 113 hr, 36 minMay 113 hr, 36 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 spring in Bir el Ater is 6:56 AM on March 1 and the earliest sunrise is 1 hour, 41 minutes earlier at 5:15 AM on May 31.

The earliest sunset is 6:23 PM on March 1 and the latest sunset is 1 hour, 12 minutes later at 7:35 PM on May 31.

Daylight saving time is not observed in Bir el Ater during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:14 AM and sets 14 hours, 29 minutes later, at 7:44 PM, while on December 21, the shortest day of the year, it rises at 7:31 AM and sets 9 hours, 49 minutes later, at 5:20 PM.

Sunrise & Sunset with Twilight in the Spring in Bir el Ater

Sunrise & Sunset with Twilight in the Spring in Bir el AterMarAprMay2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMWinterSummer5:15 AM5:15 AMMay 317:35 PMMay 317:35 PM6:56 AM6:56 AMMar 16:23 PMMar 16:23 PM6:14 AM6:14 AMApr 16:49 PMApr 16:49 PM5:37 AM5:37 AMMay 17:13 PMMay 17:13 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
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 Bir el Ater

Solar Elevation and Azimuth in the Spring in Bir el AterMarAprMay12 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 AMWinterSummer001020203030405050600010102030304040506070
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 Bir el Ater

Moon Rise, Set & Phases in the Spring in Bir el AterMarAprMay12 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 AM7:13 AM7:13 AM5:33 PM5:33 PM6:21 PM6:21 PM7:40 AM7:40 AM6:54 AM6:54 AM6:50 PM6:50 PM6:07 PM6:07 PM6:30 AM6:30 AM5:49 AM5:49 AM6:49 PM6:49 PM6:50 PM6:50 PM5:47 AM5:47 AM8:05 PM8:05 PM7:47 PM7:47 PM5:32 AM5:32 AM8:05 PM8:05 PM7:42 PM7:42 PM5:09 AM5:09 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 Bir el Ater 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 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Spring in Bir el Ater

Humidity Comfort Levels in the Spring in Bir el AterMarAprMay0%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 310%May 310%Apr 10%Apr 10%May 10%May 10%comfortablecomfortabledrydry
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 Bir el Ater is essentially constant during the spring, remaining within 0.4 miles per hour of 9.4 miles per hour throughout.

For reference, on April 11, the windiest day of the year, the daily average wind speed is 9.8 miles per hour, while on August 8, the calmest day of the year, the daily average wind speed is 7.2 miles per hour.

The highest daily average wind speed during the spring is 9.8 miles per hour on April 11.

Average Wind Speed in the Spring in Bir el Ater

Average Wind Speed in the Spring in Bir el AterMarAprMay0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphWinterSummerApr 119.8 mphApr 119.8 mphMar 19.6 mphMar 19.6 mphMay 319.1 mphMay 319.1 mphMay 19.5 mphMay 19.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Bir el Ater during the spring is predominantly out of the north from March 1 to April 25 and the east from April 25 to May 31.

Wind Direction in the Spring in Bir el Ater

Wind Direction in the Spring in Bir el AterNEMarAprMay0%100%20%80%40%60%60%40%80%20%100%0%WinterSummerwestsoutheastnorth
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 Bir el Ater typically lasts for 10 months (304 days), from around February 13 to around December 13, rarely starting after March 16, or ending before November 20.

The spring in Bir el Ater is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly increasing from 75% to 100% over the course of the season.

Time Spent in Various Temperature Bands and the Growing Season in the Spring in Bir el Ater

Time Spent in Various Temperature Bands and the Growing Season in the Spring in Bir el Atergrowing seasonMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummer75%Mar 175%Mar 1100%May 31100%May 3199%Apr 199%Apr 1100%May 1100%May 150%Feb 1350%Feb 13very 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 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 Bir el Ater are very rapidly increasing during the spring, increasing by 957°F, from 77°F to 1,034°F, over the course of the season.

Growing Degree Days in the Spring in Bir el Ater

Growing Degree Days in the Spring in Bir el AterMarAprMay200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°FWinterSummerMar 177°FMar 177°FMay 311,034°FMay 311,034°FApr 1226°FApr 1226°FMay 1521°FMay 1521°F
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 Bir el Ater 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 Bir el Ater

Average Daily Incident Shortwave Solar Energy in the Spring in Bir el AterMarAprMay0 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 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 Bir el Ater are 34.745 deg latitude, 8.060 deg longitude, and 2,917 ft elevation.

The topography within 2 miles of Bir el Ater contains significant variations in elevation, with a maximum elevation change of 564 feet and an average elevation above sea level of 2,893 feet. Within 10 miles contains significant variations in elevation (2,385 feet). Within 50 miles contains large variations in elevation (5,843 feet).

The area within 2 miles of Bir el Ater is covered by sparse vegetation (43%), bare soil (35%), and artificial surfaces (22%), within 10 miles by sparse vegetation (79%) and bare soil (19%), and within 50 miles by bare soil (45%) and sparse vegetation (27%).

This report illustrates the typical weather in Bir el Ater, 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 are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Bir el Ater.

For each station, the records are corrected for the elevation difference between that station and Bir el Ater according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Bir el Ater is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bir el Ater and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Bir el Ater and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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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