Average Weather in As Saffānīyah Saudi Arabia

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2. Saudi Arabia
3. Eastern Province
4. As Saffānīyah

In As Saffānīyah, the summers are long, sweltering, and arid; the winters are cool, dry, and windy; and it is mostly clear year round. Over the course of the year, the temperature typically varies from 53°F to 106°F and is rarely below 47°F or above 109°F.

The hot season lasts for 4.2 months, from May 23 to September 28, with an average daily high temperature above 98°F. The hottest day of the year is July 28, with an average high of 106°F and low of 88°F.

The cool season lasts for 3.4 months, from November 30 to March 10, with an average daily high temperature below 74°F. The coldest day of the year is January 25, with an average low of 53°F and high of 66°F.

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.

In As Saffānīyah, 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 As Saffānīyah begins around May 19 and lasts for 2.0 months, ending around July 19. On June 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 95% of the time, and overcast or mostly cloudy 5% of the time.

The cloudier part of the year begins around July 19 and lasts for 10 months, ending around May 19. On April 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 35% of the time, and clear, mostly clear, or partly cloudy 65% of the time.

As Saffānīyah does not experience significant seasonal variation in the frequency of wet days (i.e., those with greater than 0.04 inches of liquid or liquid-equivalent precipitation). The frequency ranges from 0% to 7%, with an average value of 3%.

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 7% on January 17.

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. As Saffānīyah experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in As Saffānīyah. The most rain falls during the 31 days centered around February 8, with an average total accumulation of 0.4 inches.

The least rain falls around July 2, with an average total accumulation of 0.0 inches.

The length of the day in As Saffānīyah varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 22 minutes of daylight; the longest day is June 21, with 13 hours, 55 minutes of daylight.

The earliest sunrise is at 4:48 AM on June 10, and the latest sunrise is 1 hour, 50 minutes later at 6:37 AM on January 13. The earliest sunset is at 4:49 PM on December 1, and the latest sunset is 1 hour, 56 minutes later at 6:45 PM on July 1.

Daylight saving time (DST) is not observed in As Saffānīyah during 2017.

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.

As Saffānīyah experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.0 months, from May 14 to November 14, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The muggiest day of the year is August 28, with muggy conditions 39% of the time.

The least muggy day of the year is January 31, when muggy conditions are essentially unheard of.

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 As Saffānīyah experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.1 months, from May 29 to August 1, with average wind speeds of more than 5.5 miles per hour. The windiest day of the year is June 21, with an average hourly wind speed of 6.6 miles per hour.

The calmer time of year lasts for 9.9 months, from August 1 to May 29. The calmest day of the year is October 4, with an average hourly wind speed of 4.6 miles per hour.

The predominant average hourly wind direction in As Saffānīyah is from the north throughout the year.

As Saffānīyah 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.7 months, from June 18 to October 10, with an average temperature above 85°F. The day of the year with the warmest water is August 14, with an average temperature of 91°F.

The time of year with cooler water lasts for 3.2 months, from December 26 to April 3, with an average temperature below 68°F. The day of the year with the coolest water is February 10, with an average temperature of 62°F.

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 3.5 months, from May 12 to August 29, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 19, with an average of 8.0 kWh.

The darker period of the year lasts for 2.9 months, from November 7 to February 5, with an average daily incident shortwave energy per square meter below 4.4 kWh. The darkest day of the year is December 26, with an average of 3.5 kWh.

For the purposes of this report, the geographical coordinates of As Saffānīyah are 27.971 deg latitude, 48.730 deg longitude, and 16 ft elevation.

The topography within 2 miles of As Saffānīyah is essentially flat, with a maximum elevation change of 79 feet and an average elevation above sea level of 17 feet. Within 10 miles is essentially flat (154 feet). Within 50 miles contains only modest variations in elevation (1,001 feet).

The area within 2 miles of As Saffānīyah is covered by bare soil (85%) and water (15%), within 10 miles by bare soil (53%) and water (47%), and within 50 miles by bare soil (52%) and water (47%).

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

As Saffānīyah 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 As Saffānīyah, 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 Tables of the Sun, Moon and Planets , 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 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.