September weather forecastCassisse, Angola
September
Weather in September
The first month of the spring, September, is a tropical month in Cassisse, Angola, with an average temperature fluctuating between 14.5°C (58.1°F) and 30.5°C (86.9°F).Temperature
Cassisse experiences its highest temperatures in September, with an average peak of 30.5°C (86.9°F) and a low of 14.5°C (58.1°F).Humidity
The average relative humidity in September in Cassisse 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. In Cassisse, Angola, during the entire year, the rain falls for 194 days and collects up to 1462mm (57.56") of precipitation.Daylight
The average length of the day in September in Cassisse is 12h and 2min.On the first day of the month, sunrise is at 06:02 and sunset at 17:54. On the last day of September, 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
August and September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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
Cassisse, 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).
