Climate and Average Weather Year Round in Ar Rawḑah Yemen

In Ar Rawḑah, the summers are long, sweltering, arid, and mostly cloudy and the winters are short, comfortable, dry, and mostly clear. Over the course of the year, the temperature typically varies from 57°F to 99°F and is rarely below 51°F or above 103°F.

Based on the beach/pool score, the best times of year to visit Ar Rawḑah for hot-weather activities are from early April to early May and from late August to late October.

The hot season lasts for 4.6 months, from May 8 to September 26, with an average daily high temperature above 96°F. The hottest month of the year in Ar Rawḑah is June, with an average high of 99°F and low of 75°F.

The cool season lasts for 2.8 months, from November 27 to February 19, with an average daily high temperature below 85°F. The coldest month of the year in Ar Rawḑah is January, with an average low of 57°F and high of 83°F.

In Ar Rawḑah, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Ar Rawḑah begins around August 25 and lasts for 8.4 months, ending around May 4.

The clearest month of the year in Ar Rawḑah is November, during which on average the sky is clear, mostly clear, or partly cloudy 78% of the time.

The cloudier part of the year begins around May 4 and lasts for 3.6 months, ending around August 25.

The cloudiest month of the year in Ar Rawḑah is June, during which on average the sky is overcast or mostly cloudy 71% of the time.

Ar Rawḑah 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 3%, with an average value of 1%.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Ar Rawḑah is April, with an average of 0.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 3% on April 9.

Rainfall

The sliding 31-day quantity of rainfall in Ar Rawḑah does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

The length of the day in Ar Rawḑah varies over the course of the year. In 2024, the shortest day is December 21, with 11 hours, 16 minutes of daylight; the longest day is June 20, with 12 hours, 59 minutes of daylight.

The earliest sunrise is at 5:20 AM on June 2, and the latest sunrise is 59 minutes later at 6:19 AM on January 23. The earliest sunset is at 5:18 PM on November 21, and the latest sunset is 1 hour, 5 minutes later at 6:24 PM on July 8.

Daylight saving time (DST) is not observed in Ar Rawḑah during 2024.

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

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.

Ar Rawḑah experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.3 months, from April 27 to October 3, during which time the comfort level is muggy, oppressive, or miserable at least 6% of the time. The month with the most muggy days in Ar Rawḑah is August, with 6.4 days that are muggy or worse.

The month with the fewest muggy days in Ar Rawḑah is January, with 0.0 days that are muggy or worse.

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 Ar Rawḑah experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.0 months, from July 2 to September 1, with average wind speeds of more than 7.5 miles per hour. The windiest month of the year in Ar Rawḑah is August, with an average hourly wind speed of 8.6 miles per hour.

The calmer time of year lasts for 10 months, from September 1 to July 2. The calmest month of the year in Ar Rawḑah is October, with an average hourly wind speed of 6.1 miles per hour.

The predominant average hourly wind direction in Ar Rawḑah varies throughout the year.

The wind is most often from the east for 1.3 months, from October 17 to November 25, with a peak percentage of 39% on October 26. The wind is most often from the south for 11 months, from November 25 to October 17, with a peak percentage of 46% on January 1.

Ar Rawḑah 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 2.0 months, from May 8 to July 8, with an average temperature above 85°F. The month of the year in Ar Rawḑah with the warmest water is June, with an average temperature of 86°F.

The time of year with cooler water lasts for 3.5 months, from December 4 to March 18, with an average temperature below 80°F. The month of the year in Ar Rawḑah with the coolest water is February, with an average temperature of 78°F.

To characterize how pleasant the weather is in Ar Rawḑah throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Ar Rawḑah for general outdoor tourist activities is from mid October to late March, with a peak score in the last week of November.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Ar Rawḑah for hot-weather activities are from early April to early May and from late August to late October, with a peak score in the last week of September.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Ar Rawḑah 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.

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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from March 5 to May 20, with an average daily incident shortwave energy per square meter above 7.3 kWh. The brightest month of the year in Ar Rawḑah is April, with an average of 7.6 kWh.

The darker period of the year lasts for 2.1 months, from November 19 to January 23, with an average daily incident shortwave energy per square meter below 6.3 kWh. The darkest month of the year in Ar Rawḑah is December, with an average of 6.0 kWh.

For the purposes of this report, the geographical coordinates of Ar Rawḑah are 14.467 deg latitude, 47.276 deg longitude, and 2,710 ft elevation.

The topography within 2 miles of Ar Rawḑah contains very significant variations in elevation, with a maximum elevation change of 988 feet and an average elevation above sea level of 2,731 feet. Within 10 miles contains very significant variations in elevation (3,540 feet). Within 50 miles also contains extreme variations in elevation (7,024 feet).

The area within 2 miles of Ar Rawḑah is covered by bare soil (84%) and water (11%), within 10 miles by bare soil (61%) and sparse vegetation (29%), and within 50 miles by bare soil (69%) and sparse vegetation (25%).