May Weather in Rābigh Saudi Arabia

Daily high temperatures increase by 4°F, from 95°F to 99°F, rarely falling below 90°F or exceeding 105°F.

Daily low temperatures increase by 3°F, from 74°F to 78°F, rarely falling below 68°F or exceeding 83°F.

For reference, on July 16, the hottest day of the year, temperatures in Rābigh typically range from 81°F to 102°F, while on January 31, the coldest day of the year, they range from 64°F to 82°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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.

Rosso, Mauritania (3,579 miles away); Atar, Mauritania (3,335 miles); and Derby, Australia (6,353 miles) are the far-away foreign places with temperatures most similar to Rābigh (view comparison).

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The month of May in Rābigh experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 17% to 13%.

The clearest day of the month is May 27, with clear, mostly clear, or partly cloudy conditions 87% of the time.

For reference, on September 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 37%, while on June 6, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.

Over the course of May in Rābigh, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 26 minutes, implying an average daily increase of 52 seconds, and weekly increase of 6 minutes, 4 seconds.

The shortest day of the month is May 1, with 13 hours, 0 minutes of daylight and the longest day is May 31, with 13 hours, 26 minutes of daylight.

The latest sunrise of the month in Rābigh is 5:50 AM on May 1 and the earliest sunrise is 12 minutes earlier at 5:38 AM on May 31.

The earliest sunset is 6:51 PM on May 1 and the latest sunset is 14 minutes later at 7:04 PM on May 31.

Daylight saving time is not observed in Rābigh during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:39 AM and sets 13 hours, 32 minutes later, at 7:11 PM, while on December 21, the shortest day of the year, it rises at 7:00 AM and sets 10 hours, 44 minutes later, at 5:44 PM.

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.

The figure below presents a compact representation of key lunar data for May 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.

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 Rābigh is rapidly increasing during May, rising from 42% to 58% over the course of the month.

For reference, on September 5, the muggiest day of the year, there are muggy conditions 85% of the time, while on January 14, the least muggy day of the year, there are muggy conditions 11% of the time.

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 Rābigh is gradually increasing during May, increasing from 8.2 miles per hour to 8.7 miles per hour over the course of the month.

For reference, on January 24, the windiest day of the year, the daily average wind speed is 9.6 miles per hour, while on October 8, the calmest day of the year, the daily average wind speed is 7.4 miles per hour.

The lowest daily average wind speed during May is 8.1 miles per hour on May 4.

The hourly average wind direction in Rābigh throughout May is predominantly from the west, with a peak proportion of 49% on May 31.

Rābigh 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 in Rābigh is gradually increasing during May, rising by 2°F, from 81°F to 83°F, over the course of the month.

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 Rābigh 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.

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 Rābigh are very rapidly increasing during May, increasing by 992°F, from 3,105°F to 4,097°F, over the course of the month.

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 Rābigh is essentially constant during May, remaining within 0.2 kWh of 7.6 kWh throughout.

For the purposes of this report, the geographical coordinates of Rābigh are 22.799 deg latitude, 39.035 deg longitude, and 23 ft elevation.

The topography within 2 miles of Rābigh is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 13 feet. Within 10 miles is essentially flat (535 feet). Within 50 miles contains significant variations in elevation (5,794 feet).

The area within 2 miles of Rābigh is covered by bare soil (89%), within 10 miles by bare soil (74%) and water (23%), and within 50 miles by bare soil (56%) and water (41%).