September weather forecastCassanda, Angola
September
Weather in September
The first month of the spring, September, is a tropical month in Cassanda, Angola, with temperature in the range of an average high of 30.5°C (86.9°F) and an average low of 14.5°C (58.1°F).Temperature
Cassanda's September weather reaches an average high of 30.5°C (86.9°F) and an average low of 14.5°C (58.1°F), making it the warmest month.Humidity
In September, the average relative humidity in Cassanda is 39%.Rainfall
January through May, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 5.7 rainfall days, it receives 11mm (0.43") of precipitation. Throughout the year, there are 194 rainfall days, and 1462mm (57.56") 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 17:54. On the last day of the month, sunrise is at 05:41 and sunset at 17:54 WAT.
Sunshine
The months with the most sunshine are September and November, with an average of 9.6h of sunshine.UV index
The months with the highest UV index are August and September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 6 in September leads to these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cassanda, Angola
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is September (30.5°C).
The month with the lowest average high temperature is December (22.9°C).
- Average low temperature in September: 14.5°C
The month with the highest average low temperature is October (15.9°C).
The coldest month (with the lowest average low temperature) is June (8.9°C).
Average pressure in September
Cassanda, Angola
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is June (1017.5mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).
Average wind speed in September
Cassanda, Angola
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is August (6.9km/h).
The calmest month (with the lowest average wind speed) is December (4.8km/h).
Average humidity in September
Cassanda, Angola
- Average humidity in September: 39%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (30%).
Average rainfall in September
Cassanda, Angola
- Average rainfall in September: 11mm
The wettest month (with the highest rainfall) is December (281mm).
The driest months (with the least rainfall) are June, July and August (0mm).
Average rainfall days in September
Cassanda, Angola
- Average rainfall days in September: 5.7 days
The month with the highest number of rainy days is December (30 days).
The months with the least rainy days are June and July (0.1 days).
Average daylight in September /
Average sunshine in September
Cassanda, Angola
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 24min).
- Average sunshine in September: 9h and 36min
The months with the most sunshine are September and November (Average sunshine: 9h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 42min).
Average sunshine days in September
Cassanda, Angola
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is July (31 days).
The month with the least sunshine days is December (0.8 days).
Average UV index in September
Cassanda, Angola
- Average UV index in September: 6
The months with the highest UV index are August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, October, November and December (UV index 5).
Average cloud cover in September
Cassanda, Angola
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 1).
Average visibility in September
Cassanda, Angola
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (7km).
