July, standing at the peak of the wet season, greets
Juba residents with more rain than any other month. Significant precipitation, peaking at 145mm (5.71"), along with the highest relative humidity at 81%, marks the month's weather identity. Besides, the sunshine hours are notedly fewer due to increased cloud coverage. Yet, the temperatures stay quite high for a city under a mostly cloudy sky. Despite some dark and wet days, coupled with the lowest UV index of the year, the overall warmth of Juba prevails.
Temperature
Juba records the coldest temperatures in July, averaging a high of 31.1°C (88°F) and a low of 21.1°C (70°F).
Heat index
The heat index value for July is evaluated at a scorching 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
July is the most humid month in Juba,
South Sudan, with an average relative humidity of 81%.
Rainfall
July is the month with the most rainfall. Rain falls for 13 days and accumulates 145mm (5.71") of precipitation.
Daylight
In Juba, the average length of the day in July is 12h and 22min.
On the first day of July, sunrise is at 05:45 and sunset at 18:09. On the last day of the month, sunrise is at 05:50 and sunset at 18:10 CAT.
Sunshine
The month with the least sunshine is July, with an average of 5.9h of sunshine.
UV index
The months with the lowest UV index in Juba are
June, July and
December, with an average maximum UV index of 11. A UV Index of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 11 in July translates into these instructions:
Put into effect every precaution of importance, unprotected skin and eyes may get burns swiftly. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Even under cloud cover, use sunscreen with at least an SPF 30 generously and reapply frequently post every swim or outdoor exercise.