September weather forecastKatherine, Australia
September
Weather in September
September, the first month of the spring in Katherine, is a sweltering month, with an average temperature ranging between min 20.4°C (68.7°F) and max 35.3°C (95.5°F).Temperature
Entering September, Katherine notices a subtle temperature elevation, with the average high-temperature advancing from August's tropical 31.8°C (89.2°F) to a very hot 35.3°C (95.5°F). Despite drastic daytime highs, Katherine logs an average low-temperature reading of 20.4°C (68.7°F) throughout September.Humidity
August and September, with an average relative humidity of 39%, are the least humid months.Rainfall
January through May, September through December are months with rainfall in Katherine. September is the first month it rains. Throughout September, in the average 3.3 rainfall days, it receives 12mm (0.47") of precipitation. In Katherine, during the entire year, the rain falls for 128.5 days and collects up to 705mm (27.76") of precipitation.Daylight
The average length of the day in September is 12h and 1min.On the first day of the month, sunrise is at 6:45 am and sunset at 6:36 pm. On the last day of September, in Katherine, sunrise is at 6:24 am and sunset at 6:37 pm ACST.
Sunshine
In Katherine, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Katherine is 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Katherine, Australia
- Average high temperature in September: 35.3°C
The warmest month (with the highest average high temperature) is November (37.2°C).
The month with the lowest average high temperature is June (28.5°C).
- Average low temperature in September: 20.4°C
The month with the highest average low temperature is November (26.1°C).
The coldest month (with the lowest average low temperature) is July (15.7°C).
Average pressure in September
Katherine, Australia
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is July (1014.6mbar).
The month with the lowest atmospheric pressure is January (1005.8mbar).
Average wind speed in September
Katherine, Australia
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is July (13km/h).
The calmest month (with the lowest average wind speed) is December (8.7km/h).
Average humidity in September
Katherine, Australia
- Average humidity in September: 39%
The months with the highest relative humidity are January and February (75%).
The months with the lowest relative humidity are August and September (39%).
Average rainfall in September
Katherine, Australia
- Average rainfall in September: 12mm
The wettest month (with the highest rainfall) is January (180mm).
The driest months (with the least rainfall) are June, July and August (0mm).
Average rainfall days in September
Katherine, Australia
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is January (25.1 days).
The month with the least rainy days is August (0.2 days).
Average daylight in September /
Average sunshine in September
Katherine, Australia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in September: 9h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in September
Katherine, Australia
- Average sunshine days in September: 25.8 days
The month with the most sunshine days is August (30.8 days).
The month with the least sunshine days is January (4.3 days).
Average UV index in September
Katherine, Australia
- Average UV index in September: 7
The month with the highest UV index is October (UV index 8).
The months with the lowest UV index are May, June and July (UV index 6).
Average cloud cover in September
Katherine, Australia
- Average cloud cover in September: 13
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Katherine, Australia
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March and December (9km).





