Climate and Average Weather Year Round in Aïn Sefra Algeria

In Aïn Sefra, the summers are short, sweltering, and arid; the winters are long, cold, and dry; and it is mostly clear year round. Over the course of the year, the temperature typically varies from 37°F to 99°F and is rarely below 31°F or above 104°F.

Based on the beach/pool score, the best time of year to visit Aïn Sefra for hot-weather activities is from early June to mid September.

The hot season lasts for 2.9 months, from June 10 to September 8, with an average daily high temperature above 90°F. The hottest month of the year in Aïn Sefra is July, with an average high of 98°F and low of 74°F.

The cool season lasts for 3.8 months, from November 14 to March 9, with an average daily high temperature below 63°F. The coldest month of the year in Aïn Sefra is January, with an average low of 38°F and high of 55°F.

In Aïn Sefra, 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 Aïn Sefra begins around June 12 and lasts for 2.7 months, ending around September 3.

The clearest month of the year in Aïn Sefra is July, during which on average the sky is clear, mostly clear, or partly cloudy 93% of the time.

The cloudier part of the year begins around September 3 and lasts for 9.3 months, ending around June 12.

The cloudiest month of the year in Aïn Sefra is October, during which on average the sky is overcast or mostly cloudy 38% of the time.

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

The wetter season lasts 8.7 months, from August 26 to May 16, with a greater than 7% chance of a given day being a wet day. The month with the most wet days in Aïn Sefra is October, with an average of 3.2 days with at least 0.04 inches of precipitation.

The drier season lasts 3.3 months, from May 16 to August 26. The month with the fewest wet days in Aïn Sefra is July, with an average of 0.7 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 Aïn Sefra is October, with an average of 3.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 12% on October 6.

Rainfall

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. Aïn Sefra experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.7 months, from September 13 to April 5, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Aïn Sefra is October, with an average rainfall of 0.9 inches.

The rainless period of the year lasts for 5.3 months, from April 5 to September 13. The month with the least rain in Aïn Sefra is July, with an average rainfall of 0.1 inches.

The length of the day in Aïn Sefra varies significantly over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 0 minutes of daylight; the longest day is June 20, with 14 hours, 19 minutes of daylight.

The earliest sunrise is at 5:53 AM on June 12, and the latest sunrise is 2 hours, 12 minutes later at 8:05 AM on January 9. The earliest sunset is at 5:55 PM on December 3, and the latest sunset is 2 hours, 19 minutes later at 8:14 PM on June 29.

Daylight saving time (DST) is not observed in Aïn Sefra during 2024.

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.

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 Aïn Sefra, 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.

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 Aïn Sefra experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.9 months, from February 3 to June 29, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year in Aïn Sefra is April, with an average hourly wind speed of 10.2 miles per hour.

The calmer time of year lasts for 7.1 months, from June 29 to February 3. The calmest month of the year in Aïn Sefra is October, with an average hourly wind speed of 8.0 miles per hour.

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

The wind is most often from the south for 3.1 months, from June 21 to September 25 and for 2.1 weeks, from October 8 to October 23, with a peak percentage of 38% on August 4. The wind is most often from the north for 1.9 weeks, from September 25 to October 8 and for 7.9 months, from October 23 to June 21, with a peak percentage of 32% on September 30.

To characterize how pleasant the weather is in Aïn Sefra 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 times of year to visit Aïn Sefra for general outdoor tourist activities are from mid April to mid June and from early September to late October, with a peak score in the first week of October.

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 Aïn Sefra for hot-weather activities is from early June to mid September, with a peak score in the first week of July.

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 Aïn Sefra typically lasts for 9.9 months (301 days), from around February 15 to around December 12, rarely starting after March 16, or ending before November 22.

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 Aïn Sefra should appear around February 14, only rarely appearing before February 1 or after March 5.

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.1 months, from April 14 to August 18, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest month of the year in Aïn Sefra is June, with an average of 8.0 kWh.

The darker period of the year lasts for 3.2 months, from October 31 to February 5, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in Aïn Sefra is December, with an average of 3.4 kWh.

For the purposes of this report, the geographical coordinates of Aïn Sefra are 32.750 deg latitude, -0.583 deg longitude, and 3,537 ft elevation.

The topography within 2 miles of Aïn Sefra contains significant variations in elevation, with a maximum elevation change of 548 feet and an average elevation above sea level of 3,629 feet. Within 10 miles contains significant variations in elevation (3,786 feet). Within 50 miles also contains extreme variations in elevation (4,833 feet).

The area within 2 miles of Aïn Sefra is covered by bare soil (91%), within 10 miles by bare soil (61%) and sparse vegetation (33%), and within 50 miles by bare soil (81%) and sparse vegetation (18%).