September weather forecastUige, Angola

Weather in September

September signifies a transition period in Uige's weather as rainfall jumps to 51mm (2.01") spread over 18.8 days. The average high temperature gradually drops to 31.1°C (88°F), marking the impending end of the hot season. Despite this, a substantial 7.9 hours of sunshine ensures a warm and inviting atmosphere for outdoor pursuits. The observable wind speed of 6.2km/h (3.9mph) and relative humidity of 69% also indicate a shift towards weather conditions typical of the upcoming wet season.

Temperature

The onset of September manifests an average high-temperature of a still tropical 31.1°C (88°F), demonstrating a minor variation from the preceding month. Uige registers a substantial downturn from daytime peaks throughout September nights, with an average low-temperature of 18.6°C (65.5°F).

Heat index

For most parts of September, the heat index is appraised at a very hot 38°C (100.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Uige, the average relative humidity in September is 69%.

Rainfall

In Uige, Angola, in September, it is raining for 18.8 days, with typically 51mm (2.01") of accumulated precipitation. Throughout the year, there are 233.4 rainfall days, and 1395mm (54.92") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of the month, sunrise is at 06:00 and sunset at 17:58. On the last day of September, sunrise is at 05:44 and sunset at 17:54 WAT.

Sunshine

The month with the most sunshine is September, with an average of 7.9h 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 risk from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.