September weather forecastChissaca, Angola

September

Weather in September

The first month of the spring, September, is still a tropical month in Chissaca, Angola, with temperature in the range of an average low of 16.2°C (61.2°F) and an average high of 31.5°C (88.7°F).

Temperature

The month of September sees the highest average temperatures, reaching 31.5°C (88.7°F) at the peak and 16.2°C (61.2°F) at the low.

Heat index

In September, the heat index is evaluated at a torrid 35°C (95°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity in Chissaca is 57%.

Rainfall

In Chissaca, in September, during 9.3 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, there are 198 rainfall days, and 1143mm (45") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 2min.
On the first day of September, sunrise is at 06:01 and sunset at 17:55. On the last day of the month, sunrise is at 05:42 and sunset at 17:54 WAT.

Sunshine

September has the most sunshine of the year, with an average of 9.4h of sunshine.

UV index

May, July through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Updated: Aug 11, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The warmest time of the year is September, with temperatures averaging a high of 31.5°C (88.7°F) and a low of 16.2°C (61.2°F).

The average high-temperature, in September, in Chissaca, is 31.5°C (88.7°F), while the average low-temperature is 16.2°C (61.2°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 35°C (95°F).

The average relative humidity in September is 57%.

In Chissaca, in September, it is raining for 9.3 days, with typically 25mm (0.98") of accumulated precipitation.

In Chissaca, the average day length in September is 12h and 2min.

On the first day of September, sunrise is at 06:01 and sunset at 17:55. On the last day of the month, sunrise is at 05:42 and sunset at 17:54 WAT.

September has the most sunshine of the year, with an average of 9.4h of sunshine.

In Chissaca, the average sunshine duration in September is 9.4h.

May, July through September, with an average maximum UV index of 6, are months with the highest UV index.

In Chissaca, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

31.3°C

31.5°C

28.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.5km/h

6.5km/h

6.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

29.3

17.1

2.9

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Chissaca, Angola

Average high temperature in September: 31.5°C

The warmest month (with the highest average high temperature) is September (31.5°C).
The month with the lowest average high temperature is December (24.2°C).

Average low temperature in September: 16.2°C

The month with the highest average low temperature is October (17°C).
The coldest month (with the lowest average low temperature) is June (11.8°C).

Average pressure in September
Chissaca, Angola

Average pressure in September: 1013.4mbar

The month with the highest atmospheric pressure is June (1015.9mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).

Average wind speed in September
Chissaca, Angola

Average wind speed in September: 6km/h

The windiest months (with the highest average wind speed) are June and July (6.9km/h).
The calmest month (with the lowest average wind speed) is November (5.1km/h).

Average humidity in September
Chissaca, Angola

Average humidity in September: 57%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (41%).

Average rainfall in September
Chissaca, Angola

Average rainfall in September: 25mm

The wettest month (with the highest rainfall) is November (208mm).
The driest months (with the least rainfall) are June and July (0mm).

Average rainfall days in September
Chissaca, Angola

Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is November (28.8 days).
The months with the least rainy days are June and July (0.1 days).

Average daylight in September /
Average sunshine in September
Chissaca, Angola

Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 24min).

Average sunshine in September: 9h and 24min

The month with the most sunshine is September (Average sunshine: 9h and 24min).
The month with the least sunshine is April (Average sunshine: 7h and 0min).

Average sunshine days in September
Chissaca, Angola

Average sunshine days in September: 17.1 days

The month with the most sunshine days is July (30.9 days).
The month with the least sunshine days is November (0.7 days).

Average UV index in September
Chissaca, Angola

Average UV index in September: 6

The months with the highest UV index are May, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, June, October, November and December (UV index 5).