September weather forecast
Cossa, Angola

September, the first month of the spring in Cossa, is also a hot month, with an average temperature fluctuating between 33.7°C (92.7°F) and 21.7°C (71.1°F).

Temperature

Cossa's transition from August to September introduces an average high-temperature of a hot 33.7°C (92.7°F), marking an insignificant variation from the 35.6°C (96.1°F). A marked difference from the daytime temperatures, Cossa's nighttime temperature falls to an average low of 21.7°C (71.1°F) in September.

Heat index

The average heat index in September is appraised at an extremely hot 41°C (105.8°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Cossa, the average relative humidity in September is 59%.

Rainfall

In Cossa, in September, during 17.4 rainfall days, 49mm (1.93") of precipitation is typically accumulated. Throughout the year, there are 235.5 rainfall days, and 1228mm (48.35") of precipitation is accumulated.

Daylight

In Cossa, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:35 and sunset at 17:33. On the last day of September, sunrise is at 05:19 and sunset at 17:29 WAT.

Sunshine

In September, the average sunshine is 9.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.