Average Weather in October at Djerba-Zarzis International Airport Tunisia
At Djerba-Zarzis International Airport, the month of October is characterized by falling daily high temperatures, with daily highs decreasing by 8°F, from 85°F to 77°F over the course of the month, and rarely exceeding 93°F or dropping below 71°F.
Daily low temperatures decrease by 7°F, from 71°F to 64°F, rarely falling below 58°F or exceeding 76°F.
For reference, on August 6, the hottest day of the year, temperatures at Djerba-Zarzis International Airport typically range from 76°F to 92°F, while on January 22, the coldest day of the year, they range from 49°F to 62°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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 October
The month of October at Djerba-Zarzis International Airport experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 34%. The highest chance of overcast or mostly cloudy conditions is 35% on October 13.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 70% of the time.
For reference, on October 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 35%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 99%.
Cloud Cover Categories in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Djerba-Zarzis International Airport, the chance of a wet day over the course of October is essentially constant, remaining around 9% throughout.
For reference, the year's highest daily chance of a wet day is 12% on December 15, and its lowest chance is 0% on July 17.
Probability of Precipitation in October
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during October at Djerba-Zarzis International Airport is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 2.2 inches.
Average Monthly Rainfall in October
Over the course of October at Djerba-Zarzis International Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 60 minutes, implying an average daily decrease of 1 minute, 60 seconds, and weekly decrease of 13 minutes, 59 seconds.
The shortest day of the month is October 31, with 10 hours, 50 minutes of daylight and the longest day is October 1, with 11 hours, 50 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month at Djerba-Zarzis International Airport is 6:11 AM on October 1 and the latest sunrise is 24 minutes later at 6:35 AM on October 31.
The latest sunset is 6:01 PM on October 1 and the earliest sunset is 36 minutes earlier at 5:25 PM on October 31.
Daylight saving time is not observed at Djerba-Zarzis International Airport during 2017.
For reference, on June 21, the longest day of the year, the Sun rises at 5:06 AM and sets 14 hours, 25 minutes later, at 7:31 PM, while on December 21, the shortest day of the year, it rises at 7:18 AM and sets 9 hours, 54 minutes later, at 5:12 PM.
Sunrise & Sunset with Twilight in October
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 at Djerba-Zarzis International Airport is very rapidly decreasing during October, falling from 57% to 19% over the course of the month.
For reference, on August 16, the muggiest day of the year, there are muggy conditions 84% 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 October
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 at Djerba-Zarzis International Airport is essentially constant during October, remaining within 0.1 miles per hour of 5.4 miles per hour throughout.
For reference, on December 25, the windiest day of the year, the daily average wind speed is 7.0 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.
The lowest daily average wind speed during October is 5.3 miles per hour on October 21.
Average Wind Speed in October
Wind Direction in October
Djerba-Zarzis International Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature at Djerba-Zarzis International Airport is decreasing during October, falling by 5°F, from 80°F to 75°F, over the course of the month.
Average Water Temperature in October
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 at Djerba-Zarzis International Airport is decreasing during October, falling by 1.2 kWh, from 5.0 kWh to 3.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Djerba-Zarzis International Airport are 33.873 deg latitude, 10.776 deg longitude, and 3 ft elevation.
The topography within 2 miles of Djerba-Zarzis International Airport is essentially flat, with a maximum elevation change of 59 feet and an average elevation above sea level of 8 feet. Within 10 miles is essentially flat (177 feet). Within 50 miles contains only modest variations in elevation (2,405 feet).
The area within 2 miles of Djerba-Zarzis International Airport is covered by cropland (46%), bare soil (30%), and artificial surfaces (16%), within 10 miles by water (65%) and cropland (22%), and within 50 miles by water (68%) and cropland (14%).
This report illustrates the typical weather at Djerba-Zarzis International Airport year round, 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
Djerba-Zarzis International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.