September weather forecast
Mumbondo, Angola

September, the first month of the spring in Mumbondo, is still a hot month, with an average temperature ranging between min 19.5°C (67.1°F) and max 31.4°C (88.5°F).

Temperature

September experiences an average high-temperature of a still tropical 31.4°C (88.5°F), barely different from August's 32°C (89.6°F). During September, the temperature tends to dip to an average of 19.5°C (67.1°F) at night.

Heat index

The heat index value for September is evaluated at a fiery hot 37°C (98.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Know that the heat index computations account for shaded terrains and slight winds. 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', reflects the blend of air temperature and relative humidity to give a temperature impression. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in September is 64%.

Rainfall

In Mumbondo, Angola, during September, the rain falls for 11.3 days and regularly aggregates up to 16mm (0.63") of precipitation. In Mumbondo, during the entire year, the rain falls for 208.7 days and collects up to 1182mm (46.54") of precipitation.

Daylight

In September, the average length of the day in Mumbondo is 12h and 3min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:01. On the last day of September, sunrise is at 05:47 and sunset at 17:58 WAT.

Sunshine

The average sunshine in September is 8.4h.

UV index

The months with the highest UV index in Mumbondo are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during September translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.