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Average Weather In September For Marsa Alam, Egypt

Location

This report describes the typical weather at the Marsa Alam International Airport (Marsa Alam, Egypt) weather station over the course of an average September. It is based on the historical records from 2004 to 2012. Earlier records are either unavailable or unreliable.

Marsa Alam has a hot desert climate. The area within 25 mi of this station is covered by oceans and seas (94%) and lakes and rivers (6%).

Temperature

The month of September is characterized by gradually falling daily high temperatures, with daily highs decreasing from 95°F to 91°F over the course of the month, exceeding 98°F or dropping below 87°F only one day in ten.

Daily High and Low Temperature in September

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures range from 78°F to 83°F, falling below 74°F or exceeding 86°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in September

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of September, the length of the day is gradually decreasing. The shortest day of the month is September 30 with 11:56 hours of daylight; the longest day is September 1 with 12:38 hours of daylight.

Daily Hours of Daylight and Twilight in September

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:22am on September 1; the latest sunset is at 6:01pm on September 1; the latest sunrise is at 5:34am on September 30; the earliest sunset is at 5:29pm on September 30.

Daylight saving time (DST) is not observed in 2012.

Daily Sunrise & Sunset with Twilight in September

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Clouds

The median cloud cover ranges from 56% (partly cloudy) to 66% (partly cloudy). The trend is for the sky to be clearing with the median cloud cover decreasing by 9% from the start to the end of the month.

Median Cloud Cover in September

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On September 15, a representative day, the sky is clear or mostly clear 1% of the time, partly cloudy 2% of the time, and mostly cloudy or overcast 2% of the time.

Cloud Cover Types in September

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

There is either very little precipitation at this location in September, or the weather station does not reliably report the conditions.

Snow

Either snow is exceptionally unlikely to fall at this location in September or this station does not reliably report precipitation types.

Humidity

The relative humidity typically ranges from 23% (dry) to 58% (mildly humid) over the course of a typical September, rarely dropping below 17% (dry), or exceeding 82% (humid).

The air is driest around September 1, at which time the relative humidity drops below 27% (dry) three days out of four; it is most humid around September 30, rising above 45% (comfortable) three days out of four.

Relative Humidity in September

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical September, the dew point typically varies from 46°F (dry) to 65°F (mildy humid) and is rarely below 39°F (dry) or above 70°F (muggy).

The time of the month between September 1 and September 30 is the most comfortable, with dew points that are neither too dry nor too muggy.

Dew Point in September

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of September typical wind speeds vary from 5 mph to 22 mph (light breeze to fresh breeze), rarely exceeding 27 mph (strong breeze).

The highest average wind speed of 14 mph (moderate breeze) occurs around September 5, at which time the average daily maximum wind speed is 22 mph (fresh breeze).

The lowest average wind speed of 13 mph (moderate breeze) occurs around September 30, at which time the average daily maximum wind speed is 20 mph (fresh breeze).

Wind Speed in September

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the north (28% of the time) and north west (14% of the time). The wind is least often out of the south (1% of the time), south west (1% of the time), east (1% of the time), south east (1% of the time), and west (5% of the time).

Wind Directions in September

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in September

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.