August weather forecast
Jeddah, Saudi Arabia

With the peak of summer behind, the August weather in Jeddah returns to comparatively milder temperatures. While the temperatures gradually come down to reach 38.8°C (101.8°F), the level of humidity rises to 59%. This month, expect lesser daylight hours as the city begins its transition towards autumn. As August transitions into September, temperatures begin their slow but steady decline.

Temperature

August's onset in Jeddah sees an average high-temperature of a still sweltering 38.8°C (101.8°F), exhibiting a slight fluctuation from the previous month. Throughout August, the average low-temperature in Jeddah dips to a warm 27.6°C (81.7°F).

Heat index

Throughout August, the heat index is estimated at a burning hot 57°C (134.6°F). Warning: These weather conditions are identified as gravely perilous, heatstroke is near.
Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The average relative humidity in August in Jeddah is 59%.

Rainfall

Throughout August, in Jeddah, 1mm (0.04") of precipitation is accumulated. During the entire year, Jeddah aggregates up to 61mm (2.4") of precipitation.

Sea temperature

August is the month with the warmest seawater, with an average sea temperature of 31.7°C (89.1°F).
Note: Swimming or participating in water activities at temperatures above 30°C (86°F) might not be as invigorating as one might hope.

Daylight

In Jeddah, Saudi Arabia, the average length of the day in August is 12h and 51min.
On the first day of the month, sunrise is at 05:56 and sunset at 19:02. On the last day of August, sunrise is at 06:06 and sunset at 18:40 +03.

Sunshine

The average sunshine in August in Jeddah is 10h.

UV index

April through September, with an average maximum UV index of 12, are months with the highest UV index in Jeddah. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In August, the maximum UV index of 12 transforms into these recommendations:
Put into action all crucial precautions. Defense against sun damage is a must. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Despite the clouds, sunscreen with an SPF of at least 30 should be used liberally and reapplied frequently, especially after a swim or outdoor workout. Note! Reflective surfaces like sand and water heighten the UV radiation levels.