Average Weather at Jerusalem Airport Palestinian TerritoriesAt Jerusalem Airport, the summers are long, warm, arid, and clear and the winters are cold and mostly clear. Over the course of the year, the temperature typically varies from 41°F to 85°F and is rarely below 34°F or above 91°F. The warm season lasts for 4.5 months, from May 25 to October 9, with an average daily high temperature above 78°F. The hottest day of the year is August 8, with an average high of 85°F and low of 66°F. The cool season lasts for 3.2 months, from December 6 to March 11, with an average daily high temperature below 60°F. The coldest day of the year is January 26, with an average low of 41°F and high of 53°F. Average High and Low Temperature
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 entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Average Hourly Temperature
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.
CloudsAt Jerusalem Airport, 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 at Jerusalem Airport begins around May 23 and lasts for 4.8 months, ending around October 16. On June 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 100% of the time, and overcast or mostly cloudy 0% of the time. The cloudier part of the year begins around October 16 and lasts for 7.2 months, ending around May 23. On December 12, the cloudiest day of the year, the sky is overcast or mostly cloudy 29% of the time, and clear, mostly clear, or partly cloudy 71% of the time. Cloud Cover
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Jerusalem Airport varies throughout the year. The wetter season lasts 4.3 months, from November 15 to March 24, with a greater than 12% chance of a given day being a wet day. The chance of a wet day peaks at 24% on February 1. The drier season lasts 7.7 months, from March 24 to November 15. The smallest chance of a wet day is 0% on June 26. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 24% on February 1. Daily Chance of Precipitation
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).
RainfallTo 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. Jerusalem Airport experiences some seasonal variation in monthly rainfall. The rainy period of the year lasts for 5.4 months, from October 26 to April 9, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 7, with an average total accumulation of 2.0 inches. The rainless period of the year lasts for 6.5 months, from April 9 to October 26. The least rain falls around July 11, with an average total accumulation of 0.0 inches. Average Monthly Rainfall
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 liquid-equivalent snowfall.
SunThe length of the day at Jerusalem Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 4 minutes of daylight; the longest day is June 21, with 14 hours, 14 minutes of daylight. Hours of Daylight and Twilight
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 is at 5:32 AM on June 12, and the latest sunrise is 1 hour, 19 minutes later at 6:51 AM on October 27. The earliest sunset is at 4:34 PM on December 3, and the latest sunset is 3 hours, 14 minutes later at 7:48 PM on June 30. Daylight saving time (DST) is observed at Jerusalem Airport during 2017, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28. Sunrise & Sunset with Twilight and Daylight Saving Time
The solar day over the course of the year 2017. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.
HumidityWe 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. Jerusalem Airport experiences some seasonal variation in the perceived humidity. The muggier period of the year lasts for 2.5 months, from July 9 to September 25, during which time the comfort level is muggy, oppressive, or miserable at least 4% of the time. The muggiest day of the year is August 18, with muggy conditions 15% of the time. The least muggy day of the year is December 8, when muggy conditions are essentially unheard of. Humidity Comfort Levels
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.
WindThis 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 Jerusalem Airport does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 3.8 miles per hour throughout.Average Wind Speed
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The predominant average hourly wind direction at Jerusalem Airport varies throughout the year. The wind is most often from the north for 1.6 months, from September 18 to November 6, with a peak percentage of 51% on September 25. The wind is most often from the west for 1.0 weeks, from November 6 to November 13 and for 9.3 months, from December 9 to September 18, with a peak percentage of 34% on November 6. The wind is most often from the east for 3.7 weeks, from November 13 to December 9, with a peak percentage of 35% on November 27. Wind Direction
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).
Water TemperatureJerusalem 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 water temperature experiences some seasonal variation over the course of the year. The time of year with warmer water lasts for 3.6 months, from July 1 to October 19, with an average temperature above 78°F. The day of the year with the warmest water is August 25, with an average temperature of 83°F. The time of year with cooler water lasts for 3.9 months, from December 31 to April 28, with an average temperature below 67°F. The day of the year with the coolest water is March 3, with an average temperature of 63°F. Average Water Temperature
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
Solar EnergyThis 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 extreme seasonal variation over the course of the year. The brighter period of the year lasts for 3.7 months, from May 4 to August 25, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is June 21, with an average of 8.6 kWh. The darker period of the year lasts for 3.2 months, from November 5 to February 12, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest day of the year is December 24, with an average of 3.0 kWh. Average Daily Incident Shortwave Solar Energy
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
TopographyFor the purposes of this report, the geographical coordinates of Jerusalem Airport are 31.867 deg latitude, 35.217 deg longitude, and 2,467 ft elevation. The topography within 2 miles of Jerusalem Airport contains very significant variations in elevation, with a maximum elevation change of 965 feet and an average elevation above sea level of 2,494 feet. Within 10 miles contains very significant variations in elevation (3,435 feet). Within 50 miles also contains extreme variations in elevation (5,482 feet). The area within 2 miles of Jerusalem Airport is covered by sparse vegetation (44%), bare soil (20%), grassland (14%), and trees (11%), within 10 miles by sparse vegetation (28%) and grassland (19%), and within 50 miles by bare soil (26%) and water (19%). Data SourcesThis report illustrates the typical weather at Jerusalem Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointJerusalem 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. The stations on which we may fall back include but are not limited to Jerusalem, Ben Gurion Airport, Beer-Sheva, Amman Civil Airport, Queen Alia International Airport, Irbid, Haifa International Airport, and King Hussein Air Base. Other DataAll 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. |