April weather forecast
Jeddah, Saudi Arabia

The high temperatures consistently rise in April, leaving Jeddah with a classic tropical climate. The mercury often hits a sultry 34.9°C (94.8°F), signaling the imminent approach of summer. This month, the city experiences the charm of 12.6 daylight hours, more so than the previous months of the year. Notably, the UV index escalates to 12, indicating that sun protection is necessary at this time. As April comes to an end, the indication of summer becomes more apparent with anticipations of even higher temperatures and lower rainfall.

Temperature

Jeddah's transition into April brings a slight rise in the average high-temperature, moving from 31.8°C (89.2°F) in March to a still tropical 34.9°C (94.8°F). Nighttime temperatures throughout April register a significant deviation from the day's highs, averaging at a pleasant 22.1°C (71.8°F).

Heat index

The average heat index in April is estimated at a scorching 43°C (109.4°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
In terms of the heat index, values are set with light wind and shade conditions in mind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In April, the average relative humidity is 57%.

Rainfall

In Jeddah, in April, during 1 rainfall days, 3mm (0.12") of precipitation is typically accumulated. Throughout the year, in Jeddah, there are 6 rainfall days, and 61mm (2.4") of precipitation is accumulated.

Sea temperature

In April, the average sea temperature is 26.8°C (80.2°F).
Note: Water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

The average length of the day in April is 12h and 39min.
On the first day of April, sunrise is at 06:15 and sunset at 18:37. On the last day of the month, sunrise is at 05:52 and sunset at 18:47 +03.

Sunshine

The average sunshine in April in Jeddah is 10h.

UV index

April through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 12 during April translates into the following guidance:
Ensure every crucial precaution is taken. Individuals with light skin could experience burns in under 5 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Caution! Sand and water surfaces escalate the UV intensity from the Sun.