September weather forecast and climate
Catenda do Ceú, Angola

September, the first month of the spring, in Catenda do Ceú, is still a tropical month, with temperature in the range of an average low of 19.5°C (67.1°F) and an average high of 31.4°C (88.5°F).

Temperature

In Catenda do Ceú, the average high-temperature is essentially the same as in August - a still hot 31.4°C (88.5°F). The average low-temperature, in Catenda do Ceú, is 19.5°C (67.1°F).

Heat index

The average heat index in September is evaluated at a very hot 36.8°C (98.2°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, clothing, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in September is 64%.

Rainfall

In Catenda do Ceú, it is raining for 11.3 days, with typically 16mm (0.63") of accumulated precipitation. Throughout the year, there are 208.7 rainfall days, and 1182mm (46.54") of precipitation is accumulated.

Daylight

In Catenda do Ceú, the average length of the day in September is 12.1h.

Sunshine

In September, the average sunshine is 8.4h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index in Catenda do Ceú. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Catenda do Ceú?

The average high-temperature, in September, in Catenda do Ceú, is 31.4°C (88.5°F), while the average low-temperature is 19.5°C (67.1°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines relative humidity and air temperature, is appraised at 36.8°C (98.2°F).

What is the average humidity in September in Catenda do Ceú?

The average relative humidity in September in Catenda do Ceú, Angola, is 64%.

How much does it rain in Catenda do Ceú in September?

In Catenda do Ceú, in September, during 11.3 rainfall days, 16mm (0.63") of precipitation is typically accumulated.

How many hours of daylight does Catenda do Ceú have in September?

In September, the average length of the day in Catenda do Ceú, Angola, is 12.1h.

How long on average sun shines in September in Catenda do Ceú?

In Catenda do Ceú, the average sunshine in September is 8.4h.

What are the months with the highest UV index in Catenda do Ceú?

January through December, with an average maximum UV index of 6, are months with the highest UV index in Catenda do Ceú.

When is the lowest UV index in Catenda do Ceú?

Months with the lowest UV index in Catenda do Ceú, Angola, are January through December, with an average maximum UV index of 6.

What is the UV index intensity in September in Catenda do Ceú?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.
Average temperature in September - Catenda do Ceú, Angola
  • Average high temperature in September: 31.4°C

The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is December (27.8°C).

  • Average low temperature in September: 19.5°C

Months with the highest average low temperature are October and November (20.7°C).
The coldest month (with the lowest average low temperature) is June (16.6°C).

Average pressure in September - Catenda do Ceú, Angola
  • Average pressure in September: 1013.1mbar

The month with the highest atmospheric pressure is July (1014.6mbar).
The month with the lowest atmospheric pressure is February (1011.3mbar).

Average wind speed in September - Catenda do Ceú, Angola
  • Average wind speed in September: 9.9km/h

The windiest month (with the highest average wind speed) is September (9.9km/h).
The calmest month (with the lowest average wind speed) is April (5.1km/h).

Average humidity in September - Catenda do Ceú, Angola
  • Average humidity in September: 64%

Months with the highest relative humidity are April and December (86%).
The month with the lowest relative humidity is July (60%).

Average rainfall in September - Catenda do Ceú, Angola
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is April (219mm).
The driest months (with the least rainfall) are June and July (1mm).

Average rainfall days in September - Catenda do Ceú, Angola
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is November (27.1 days).
Months with the least rainy days are June and July (1.7 days).

Average daylight in September / Average sunshine in September - Catenda do Ceú, Angola
  • Average daylight in September: 12.1h

The month with the longest days is December (Average daylight: 12.7h).
Months with the shortest days are June and July (Average daylight: 11.6h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is January (Average sunshine: 9h).
The month with the least sunshine is April (Average sunshine: 6.7h).

Average sunshine days in September - Catenda do Ceú, Angola
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is November (1.4 days).

Average UV index in September - Catenda do Ceú, Angola
  • Average UV index in September: 6

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

Average cloud cover in September - Catenda do Ceú, Angola
  • Average cloud cover in September: 34

The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in September - Catenda do Ceú, Angola
  • Average visibility in September: 10km

Months with the highest visibility are July, August and September (10km).
Months with the lowest visibility are January, March, April and December (7km).