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August Weather in Siwa Oasis Egypt

Daily high temperatures decrease by 3°F, from 100°F to 98°F, rarely falling below 93°F or exceeding 105°F.

Daily low temperatures are around 72°F, rarely falling below 67°F or exceeding 77°F. The highest daily average low temperature is 73°F on August 9.

For reference, on July 30, the hottest day of the year, temperatures in Siwa Oasis typically range from 73°F to 100°F, while on January 29, the coldest day of the year, they range from 44°F to 65°F.

Average High and Low Temperature in August in Siwa Oasis

Average High and Low Temperature in August in Siwa OasisAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313160°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°FJulSepAug 1100°FAug 1100°F73°F73°FAug 3198°FAug 3198°F71°F71°FAug 11100°FAug 11100°F73°F73°FAug 2199°FAug 2199°F72°F72°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 temperatures for the quarter of the year centered on August. 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 August in Siwa Oasis

Average Hourly Temperature in August in Siwa OasisAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSepcomfortablewarmwarmwarmhotsweltering
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.

Desert Hot Springs, California, United States (7,425 miles away) and Tucson, Arizona, United States (7,329 miles) are the far-away foreign places with temperatures most similar to Siwa Oasis (view comparison).

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The month of August in Siwa Oasis experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 1% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 0% on August 25.

The clearest day of the month is August 25, with clear, mostly clear, or partly cloudy conditions 100% of the time.

For reference, on November 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 27%, while on June 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 100%.

Cloud Cover Categories in August in Siwa Oasis

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.

Over the course of August in Siwa Oasis, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 46 minutes, implying an average daily decrease of 1 minute, 31 seconds, and weekly decrease of 10 minutes, 38 seconds.

The shortest day of the month is August 31, with 12 hours, 45 minutes of daylight and the longest day is August 1, with 13 hours, 31 minutes of daylight.

Hours of Daylight and Twilight in August in Siwa Oasis

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 earliest sunrise of the month in Siwa Oasis is 6:38 AM on August 1 and the latest sunrise is 17 minutes later at 6:55 AM on August 31.

The latest sunset is 8:09 PM on August 1 and the earliest sunset is 29 minutes earlier at 7:40 PM on August 31.

Daylight saving time is observed in Siwa Oasis during 2024, but it neither starts nor ends during August, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:19 AM and sets 14 hours, 1 minute later, at 8:20 PM, while on December 21, the shortest day of the year, it rises at 7:07 AM and sets 10 hours, 17 minutes later, at 5:24 PM.

Sunrise & Sunset with Twilight in August in Siwa Oasis

The solar day over the course of August. 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 August in Siwa Oasis

Solar Elevation and Azimuth in August in Siwa OasisAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSep0010102020203030404050505060607080000101020203030304040505060607080
northeastsouthwest
Solar elevation and azimuth over the course of August 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 August 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 August in Siwa Oasis

Moon Rise, Set & Phases in August in Siwa OasisAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJulSepJul 61:58 AMJul 61:58 AMJul 211:18 PMJul 211:18 PMAug 42:14 PMAug 42:14 PMAug 199:26 PMAug 199:26 PMSep 34:56 AMSep 34:56 AMSep 185:35 AMSep 185:35 AM6:28 AM6:28 AM9:10 PM9:10 PM7:53 PM7:53 PM6:08 AM6:08 AM6:20 AM6:20 AM8:27 PM8:27 PM7:59 PM7:59 PM7:17 AM7:17 AM7:03 AM7:03 AM7:58 PM7:58 PM7:04 PM7:04 PM7:12 AM7:12 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.
Aug 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
10%3:19 AMENE6:14 PMWNW-10:47 AMS240,068 mi
2
5%4:18 AMENE7:06 PMWNW-11:43 AMS242,301 mi
3
1%5:19 AMENE7:50 PMWNW-12:37 PMS244,470 mi
4
0%6:20 AMENE8:27 PMWNW-1:27 PMS246,523 mi
5
1%7:19 AMENE9:00 PMWNW-2:12 PMS248,384 mi
6
4%8:15 AMENE9:28 PMW-2:54 PMS249,954 mi
7
9%9:10 AME9:55 PMW-3:34 PMS251,117 mi
8
15%10:02 AME10:21 PMW-4:13 PMS251,754 mi
9
22%10:55 AME10:46 PMW-4:51 PMS251,751 mi
10
31%11:47 AMESE11:14 PMWSW-5:31 PMS251,020 mi
11
40%12:42 PMESE11:43 PMWSW-6:12 PMS249,510 mi
12
50%1:38 PMESE--6:58 PMS247,227 mi
13
61%-12:18 AMWSW2:37 PMESE7:47 PMS244,245 mi
14
71%-12:58 AMWSW3:39 PMESE8:42 PMS240,713 mi
15
80%-1:46 AMWSW4:40 PMESE9:41 PMS236,863 mi
16
88%-2:42 AMWSW5:38 PMESE10:42 PMS232,998 mi
17
95%-3:46 AMWSW6:31 PMESE11:44 PMS229,463 mi
18
97%-4:55 AMWSW7:18 PMESE--
19
100%-6:07 AMWSW7:59 PMESE12:43 AMS226,595 mi
20
100%-7:17 AMWSW8:36 PME1:38 AMS224,667 mi
21
98%-8:26 AMW9:10 PME2:30 AMS223,842 mi
22
93%-9:34 AMW9:43 PME3:21 AMS224,145 mi
23
85%-10:42 AMW10:18 PMENE4:10 AMS225,474 mi
24
75%-11:49 AMWNW10:55 PMENE5:00 AMS227,626 mi
25
64%-12:57 PMWNW11:36 PMENE5:53 AMS230,345 mi
26
50%-2:05 PMWNW-6:47 AMS233,368 mi
27
41%12:22 AMENE3:10 PMWNW-7:44 AMS236,462 mi
28
31%1:14 AMENE4:10 PMWNW-8:42 AMS239,450 mi
29
21%2:12 AMENE5:03 PMWNW-9:39 AMS242,214 mi
30
13%3:12 AMENE5:49 PMWNW-10:33 AMS244,688 mi
31
7%4:13 AMENE6:28 PMWNW-11:23 AMS246,845 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 in Siwa Oasis is essentially constant during August, remaining within 1% of 3% throughout.

The highest chance of a muggy day during August is 4% on August 25.

For reference, on August 25, the muggiest day of the year, there are muggy conditions 4% of the time, while on November 22, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in August in Siwa Oasis

Humidity Comfort Levels in August in Siwa OasisAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JulSepAug 254%Aug 254%Aug 12%Aug 12%Aug 113%Aug 113%humidhumidcomfortablecomfortabledrydry
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 Siwa Oasis is essentially constant during August, remaining within 0.2 miles per hour of 8.5 miles per hour throughout.

For reference, on April 13, the windiest day of the year, the daily average wind speed is 9.5 miles per hour, while on October 20, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.

Average Wind Speed in August in Siwa Oasis

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 Siwa Oasis throughout August is predominantly from the north, with a peak proportion of 71% on August 1.

Wind Direction in August in Siwa Oasis

Wind Direction in August in Siwa OasisAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepeastnorthwest
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).

Temperatures in Siwa Oasis are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in August in Siwa Oasis

Time Spent in Various Temperature Bands and the Growing Season in August in Siwa OasisAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 16100%Jul 2100%Jul 2comfortablewarmhotswelteringcool
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 Siwa Oasis are very rapidly increasing during August, increasing by 954°F, from 4,050°F to 5,004°F, over the course of the month.

Growing Degree Days in August in Siwa Oasis

The average growing degree days accumulated over the course of August, 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 Siwa Oasis is gradually decreasing during August, falling by 0.8 kWh, from 8.1 kWh to 7.4 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in August in Siwa Oasis

Average Daily Incident Shortwave Solar Energy in August in Siwa OasisAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJulSepAug 18.1 kWhAug 18.1 kWhAug 317.4 kWhAug 317.4 kWhAug 117.9 kWhAug 117.9 kWhAug 217.7 kWhAug 217.7 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 Siwa Oasis are 29.203 deg latitude, 25.520 deg longitude, and -49 ft elevation.

The topography within 2 miles of Siwa Oasis is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of -43 feet. Within 10 miles is essentially flat (515 feet). Within 50 miles contains significant variations in elevation (899 feet).

The area within 2 miles of Siwa Oasis is covered by cropland (64%), bare soil (25%), and water (11%), within 10 miles by bare soil (74%) and herbaceous vegetation (14%), and within 50 miles by bare soil (97%).

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

Siwa Oasis is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Siwa Oasis, according to the International Standard Atmosphere .

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.

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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