September weather forecast
Capaia, Angola

The first month of the spring, September, is also a hot month in Capaia, Angola, with an average temperature ranging between max 33.7°C (92.7°F) and min 21.7°C (71.1°F).

Temperature

Capaia greets September with an average high-temperature of a tropical 33.7°C (92.7°F), marking a slight deviation from the preceding month. September nights present a stark temperature decrease to a pleasant 21.7°C (71.1°F).

Heat index

In September, the heat index is appraised at an extremely hot 41°C (105.8°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In September, the average relative humidity is 59%.

Rainfall

In September, in Capaia, the rain falls for 17.4 days. Throughout September, 49mm (1.93") of precipitation is accumulated. Throughout the year, there are 235.5 rainfall days, and 1228mm (48.35") of precipitation is accumulated.

Daylight

In Capaia, the average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:40 and sunset at 17:37. On the last day of the month, sunrise is at 05:23 and sunset at 17:34 WAT.

Sunshine

The average sunshine in September is 9.6h.

UV index

The months with the highest UV index in Capaia are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September translates into the following guidance:
Guard oneself from overexposure. Defence against sun injury is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A hat with a broad brim is indispensable, filtering out up to half of UV rays.