September weather forecast
Caombo, Angola

September signals the advent of the pre-monsoon period, with rainfall mounting to 82mm (3.23"). Daylight hours extend subtly to 12.1 hours, matching the duration observed in March. A gentle rise in the number of sunshine days to 3.7 further underscores the seasonal transition. Wind speed sees a slight decline, averaging 7.2km/h (4.5mph). Meanwhile, the temperature range sits from 18°C (64.4°F) to 30.2°C (86.4°F), heralding the warmer months ahead.

Temperature

The arrival of September sees an average high-temperature of a still tropical 30.2°C (86.4°F), hardly diverging from August's 31.3°C (88.3°F). During September, the nighttime temperature presents a clear descent from the daily peaks, falling to an average of 18°C (64.4°F).

Heat index

Throughout September, the heat index is calculated to be a sweltering 36°C (96.8°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In September, the average relative humidity is 70%.

Rainfall

In Caombo, Angola, in September, it is raining for 24.6 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, there are 261.7 rainfall days, and 1536mm (60.47") of precipitation is accumulated.

Daylight

In Caombo, the average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:55 and sunset at 17:52. On the last day of the month, sunrise is at 05:38 and sunset at 17:49 WAT.

Sunshine

September has the most sunshine of the year, with an average of 8.6h of sunshine.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.