September weather forecast
Katherine, 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.

Frequently asked questions

How hot does it get in Katherine in September?
September temperatures in Katherine, Australia, vary between a high-temperature of 35.3°C (95.5°F) and a low-temperature of 20.4°C (68.7°F). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is calculated to be 30°C (86°F).
What are the least humid months in Katherine?
The months with the lowest humidity in Katherine are August and September, with an average relative humidity of 39%.
What is the average humidity in September in Katherine?
The average relative humidity in September is 39%.
When does it start to rain in Katherine?
September is the first month it rains in Katherine. Throughout September, in the average 3.3 rainfall days, it receives 12mm (0.47") of precipitation.
What is the average length of the day in September in Katherine?
In September, the average day length in Katherine, Australia, is 12h and 1min.
What time are sunrise and sunset in September in Katherine?
On the first day of September in Katherine, Australia, sunrise is at 6:45 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 6:37 pm ACST.
How many hours of sunshine does Katherine have in September?
In September, the average sunshine duration is 9.7h.
How high is the UV index in September in Katherine?
In Katherine, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Katherine, Australia
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
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
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
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
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
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 /
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 4min

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
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
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
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
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).

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